All Prices subject to change without notice. To contact us at Bon Aero, call us at (209) 754-5175, fax us at (209) 754-5177 or e-mail us at admin@davebean.com

Machine Screws
AN 500 / MS35264 Fillister Head Screw - Non Structural - UNC, AN 500 / MS35265 Fillister Head Screw - UNC - Drilled Head, AN 501 / MS35274 Fillister Head Screw - Non Structural - UNF, AN 501 / MS35276 Fillister Head Screw - UNF - Drilled Head, AN 502 Fillister Head Structural Screw - UNF - Drilled Head, AN 503 FIllister Head Structural Screw - UNC - Drilled Head, AN 505 / MS35190 82º Flat Head Screw - UNC, AN 507 100º Flat Head Screw, AN 507C 100º Stainless Steel Flat Head Screw, AN 509 / MS24694 / NAS 514 100º Structural Flat Head Screw, AN 510 82º Flat Head Screw - UNF, AN 515 Round Head Screw - UNF, AN 520 / MS35207 Round Head Screw - UNC, AN 525 Steel Washer Head Screw, AN 526 Truss Head Screw, AN 526C Stainless Steel Truss Head Screw, AN 535 Round Head Drive Screw, AN 565 Socket Head Set Screw, MS Screws: MS27039 Structural Pan Head Screw, MS35206 to MS 35207 Non-Structural Pan Head Screw, MS35224 Pan Head Screw, MS51957 to MS51958 Cres Non-Structural Pan Head Screw,NAS Screws: NAS 220 Brazier Head Structural Screw, NAS 387 Oval Head Machine Screw, NAS 623 Short Thread High Strength Shear Screw, Instrument Screws: MS24693 100º FH Brass Instrument Screw, MS35214 PH Brass Instrument Screw, NAS 487 / MS33737 8-32 Instrument Nut.

Size/Pitch Dash #
4-40 -4
6-32 -6
8-32 -8
8-36 -8F
10-32 -10
1/4-28 -25
5/16-24 -31
3/8-24 -38
AN machine screws begin at AN500 and continue throughAN Part Number Chart AN526. In addition there are structural screws under NAS 220-3, 623 and MS27039, plus non-structural screws MS35206/7, MS51957 as well as the brass instrument screws MS24693 and MS35214.
AN machine screws are described by a double dash number; the first part number indicates screw size (#4, 6, 8, 10, 1/4, etc.) while the second is the length in nominal 1/16ths of an inch. Substituting the letter B or C for the first dash designates brass or stainless steel material. An R following the first dash number indicates phillips head instead of slot head.
Example: AN 507C 6R10 would be a #6-32 100deg Counter sunk head screw, stainless steel, 5/8" long with phillips head.
AN 526-10-20 would be #10-32 Truss head plated steel screw with slot head, 1 1/4" long.
Although most part numbers are unique as to pitch (UNF or UNC) some are available in both fine and coarse thread (AN 507, 509, 525,526). But by far the most commonly seen pitches are UNC for sizes 4, 6 and 8, and UNF thereafter. On the rare occasion a #8 UNF (8-36) is seen, it's dash number will be followed by an F.

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What size is it?
We find that most people can identify fastners by eye in the fractional sizes, many seem clueless in the smaller numbered sizes. Here is a quick reference:
Size Major Diameter O.D. Fine Coarse
TPI Tap Drill Decimal TPI Tap Drill Decimal
2 .086 64 50 .0700 56 50 .0700
4 112 48* 42 .0935 40 43 .0890
6 .138 40* 33 .1130 32 36 .1065
8 .164 36* 29 .1360 32 29 .1360
10 .190 32 21 .1590 24 25 .1495
12* .216 28 14 .1820 24 16 .1770
* Rarely used in modern design.

AN 500 / MS35264AN 500
FILLISTER HEAD SCREW, NON STRUCTURAL,

UNC
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AN 500- 8- 8 0 to 99 0.20 100 and up 0.17
AN 500-25- 8 0 to 99 0.26 100 and up 0.24
AN 500-25-10 0 to 99 0.28 100 and up 0.25
AN 500-25-12 0 to 99 0.30 100 and up 0.25

AN 500 / MS35265AN 500 Drilled Head
FILLISTER HEAD SCREW, UNC, DRILLED HEAD
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AN 500A 6- 8 0 to 99 0.18 100 and up 0.17
AN 500A 8- 4 0 to 99 0.15 100 and up 0.14
AN 500A 8- 6 0 to 99 0.17 100 and up 0.15
AN 500A 8- 8 0 to 99 0.22 100 and up 0.19
AN 500A 8-10 0 to 99 0.20 100 and up 0.18
AN 500A 8-12 0 to 99 0.25 100 and up 0.23
AN 500A 8-14 0 to 99 0.29 100 and up 0.26
AN 500A10- 6 0 to 99 0.10 100 and up 0.09
AN 500A10- 8 0 to 99 0.15 100 and up 0.14
AN 500A10-10 0 to 99 0.20 100 and up 0.18
AN 500A10-12 0 to 99 0.25 100 and up 0.23
AN 500A10-16 0 to 99 0.30 100 and up 0.27
AN 500A25- 8 0 to 99 0.28 100 and up 0.25
AN 500A25-10 0 to 99 0.35 100 and up 0.31
AN 500A25-12 0 to 99 0.38 100 and up 0.34

AN 501 / MS35274AN 501
FILLISTER HEAD SCREW, NON STRUCTURAL, UNF
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AN 501-10- 8 0 to 99 0.10 100 and up 0.09
AN 501-10-16 0 to 99 0.15 100 and up 0.14
AN 501-10-18 0 to 99 0.17 100 and up 0.15
AN 501-10-20 0 to 99 0.20 100 and up 0.18
AN 501-10R24 0 to 99 0.22 100 and up 0.20
AN 501-25-16 0 to 99 0.35 100 and up 0.32

AN 501 / MS35276AN 501 Drilled Head
FILLISTER HEAD SCREW, UNF, DRILLED HEAD
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AN 501A 8- 8 0 to 99 0.25 100 and up 0.22
AN 501A25- 8 0 to 99 0.25 100 and up 0.23
AN 501A25-16 0 to 99 0.30 100 and up 0.27
AN 501C25-10 0 to 99 0.37 100 and up 0.33

AN 502AN 502
FILLISTER HEAD STRUCTURAL SCREW, UNF, DRILLED HEAD
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AN 502-10- 6 0 to 99 0.22 100 and up 0.20
AN 502-10- 8 0 to 99 0.23 100 and up 0.21
AN 502-10-10 0 to 99 0.23 100 and up 0.21
AN 502-10-12 0 to 99 0.35 100 and up 0.32

AN 503AN 503
FILLISTER HEAD STRUCTURAL SCREW, UNC, DRILLED HEAD
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AN 503- 8- 8 0 to 99 0.24 100 and up 0.21
AN 503-10- 8 0 to 99 0.30 100 and up 0.27
AN 503-10-12 0 to 99 0.37 100 and up 0.33
AN 503-25-12 0 to 99 0.37 100 and up 0.33

AN 505 / MS35190AN 505
82º FLAT HEAD SCREW, UNC
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AN 505- 2R 8 0 to 99 0.05 100 and up 0.0416
AN 505- 4R 4 0 to 99 0.06 100 and up 0.055
AN 505- 4R 8 0 to 99 0.07 100 and up 0.065
AN 505- 4R16 0 to 99 0.07 100 and up 0.065
AN 505- 6R 8 0 to 99 0.07 100 and up 0.065
AN 505- 6R16 0 to 99 0.08 100 and up 0.07
AN 505- 8R 8 0 to 99 0.09 100 and up 0.085
AN 505- 8R16 0 to 99 0.10 100 and up 0.095
AN 505-10R 8 0 to 99 0.12 100 and up 0.11
AN 505-10R16 0 to 99 0.15 100 and up 0.14

AN 507AN 507
100º FLAT HEAD SCREW
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AN 507- 4R 4 0 to 99 0.04 100 and up 0.03
AN 507- 4R 6 0 to 99 0.04 100 and up 0.03
AN 507- 4R 7 0 to 99 0.04 100 and up 0.03
AN 507- 4R 8 0 to 99 0.04 100 and up 0.03
AN 507- 4R10 0 to 99 0.05 100 and up 0.04
AN 507- 4R12 0 to 99 0.05 100 and up 0.04
AN 507- 4R14 0 to 99 0.05 100 and up 0.04
AN 507- 6R 4 0 to 99 0.04 100 and up 0.03
AN 507- 6R 5 0 to 99 0.04 100 and up 0.03
AN 507- 6R 6 0 to 99 0.04 100 and up 0.03
AN 507- 6R 8 0 to 99 0.04 100 and up 0.035
AN 507- 6R 9 0 to 99 0.05 100 and up 0.04
AN 507- 6R10 0 to 99 0.05 100 and up 0.04
AN 507- 6R12 0 to 99 0.05 100 and up 0.04
AN 507- 6R14 0 to 99 0.05 100 and up 0.04
AN 507- 6R16 0 to 99 0.05 100 and up 0.04
AN 507- 6R32 0 to 99 0.08 100 and up 0.07
AN 507- 6R40 0 to 99 0.09 100 and up 0.081
AN 507- 8R 4 0 to 99 0.04 100 and up 0.036
AN 507- 8R 6 0 to 99 0.04 100 and up 0.03
AN 507- 8R 7 0 to 99 0.04 100 and up 0.03
AN 507- 8R 8 0 to 99 0.04 100 and up 0.03
AN 507- 8R10 0 to 99 0.06 100 and up 0.045
AN 507- 8R12 0 to 99 0.05 100 and up 0.04
AN 507- 8R14 0 to 99 0.05 100 and up 0.04
AN 507- 8R16 0 to 99 0.05 100 and up 0.045
AN 507- 8R20 0 to 99 0.05 100 and up 0.04
AN 507- 8R24 0 to 99 0.06 100 and up 0.05
AN 507- 8R32 0 to 99 0.07 100 and up 0.063
AN 507-10R 6 0 to 99 0.06 100 and up 0.05
AN 507-10R 8 0 to 99 0.08 100 and up 0.075
AN 507-10R10 0 to 99 0.07 100 and up 0.056
AN 507-10R11 0 to 99 0.15 100 and up 0.14
AN 507-10R14 0 to 99 0.07 100 and up 0.063
AN 507-10R16 0 to 99 0.062 100 and up 0.0588
AN 507-10R18 0 to 99 0.08 100 and up 0.07
AN 507-10R20 0 to 99 0.09 100 and up 0.08
AN 507-10R23 0 to 99 0.10 100 and up 0.09
AN 507-10R24 0 to 99 0.10 100 and up 0.09
AN 507-10R27 0 to 99 0.11 100 and up 0.09
AN 507-10R32 0 to 99 0.11 100 and up 0.099
AN 507-10R34 0 to 99 0.11 100 and up 0.099
AN 507-10R36 0 to 99 0.12 100 and up 0.11
AN 507-25R 7 0 to 99 0.13 100 and up 0.115
AN 507-25R12 0 to 99 0.30 100 and up 0.27
AN 507-25R22 0 to 99 0.35 100 and up 0.315

AN 507C
100º STAINLESS STEEL FLAT HEAD SCREW
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AN 507C 4R 4 0 to 99 0.04 100 and up 0.035
AN 507C 4R 8 0 to 99 0.06 100 and up 0.05
AN 507C 6R 6 0 to 99 0.08 100 and up 0.07
AN 507C 6R 8 0 to 99 0.07 100 and up 0.063
AN 507C 6R10 0 to 99 0.07 100 and up 0.063
AN 507C 6R12 0 to 99 0.07 100 and up 0.063
AN 507C 6R14 0 to 99 0.07 100 and up 0.06
AN 507C 6R16 0 to 99 0.08 100 and up 0.072
AN 507C 6R18 0 to 99 0.09 100 and up 0.081
AN 507C 8R 6 0 to 99 0.09 100 and up 0.08
AN 507C 8R 8 0 to 99 0.08 100 and up 0.07
AN 507C 8R10 0 to 99 0.06 100 and up 0.048
AN 507C 8R12 0 to 99 0.07 100 and up 0.06
AN 507C 8R14 0 to 99 0.09 100 and up 0.081
AN 507C 8R16 0 to 99 0.09 100 and up 0.081
AN 507C10R 6 0 to 99 0.10 100 and up 0.09
AN 507C10R 7 0 to 99 0.12 100 and up 0.09
AN 507C10R 8 0 to 99 0.11 100 and up 0.095
AN 507C10R10 0 to 99 0.10 100 and up 0.09
AN 507C10R12 0 to 99 0.10 100 and up 0.085
AN 507C10R14 0 to 99 0.10 100 and up 0.09
AN 507C10R16 0 to 99 0.11 100 and up 0.099
AN 507C25R 8 0 to 99 0.35 100 and up 0.315

AN 509 / MS24694 / NAS514AN 509
100º FLAT HEAD SCREW, STRUCTURAL
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AN 509- 8R 5 0 to 99 0.07 100 and up 0.065
AN 509- 8R 6 0 to 99 0.07 100 and up 0.06
AN 509- 8R 7 0 to 99 0.095 100 and up 0.085
AN 509- 8R 8 0 to 99 0.08 100 and up 0.07
AN 509- 8R 9 0 to 99 0.08 100 and up 0.07
AN 509- 8R10 0 to 99 0.08 100 and up 0.07
AN 509- 8R11 0 to 99 0.08 100 and up 0.07
AN 509- 8R12 0 to 99 0.09 100 and up 0.08
AN 509- 8R13 0 to 99 0.09 100 and up 0.081
AN 509- 8R14 0 to 99 0.09 100 and up 0.08
AN 509- 8R15 0 to 99 0.09 100 and up 0.08
AN 509- 8R16 0 to 99 0.09 100 and up 0.08
AN 509- 8R17 0 to 99 0.10 100 and up 0.09
AN 509- 8R18 0 to 99 0.10 100 and up 0.09
AN 509- 8R19 0 to 99 0.10 100 and up 0.09
AN 509- 8R20 0 to 99 0.12 100 and up 0.11
AN 509- 8R24 0 to 99 0.15 100 and up 0.14
AN 509- 8R25 0 to 99 0.15 100 and up 0.14
AN 509- 8R28 0 to 99 0.15 100 and up 0.14
AN 509-10R 4 0 to 99 0.08 100 and up 0.07
AN 509-10R 6 0 to 99 0.08 100 and up 0.07
AN 509-10R 7 0 to 99 0.08 100 and up 0.07
AN 509-10R 8 0 to 99 0.15 100 and up 0.14
AN 509-10R 9 0 to 99 0.10 100 and up 0.095
AN 509-10R10 0 to 99 0.13 100 and up 0.12
AN 509-10R11 0 to 99 0.10 100 and up 0.09
AN 509-10R12 0 to 99 0.14 100 and up 0.13
AN 509-10R13 0 to 99 0.10 100 and up 0.09
AN 509-10R14 0 to 99 0.15 100 and up 0.14
AN 509-10R16 0 to 99 0.16 100 and up 0.15
AN 509-10R17 0 to 99 0.12 100 and up 0.11
AN 509-10R18 0 to 99 0.13 100 and up 0.12
AN 509-10R20 0 to 99 0.14 100 and up 0.13
AN 509-10R21 0 to 99 0.13 100 and up 0.117
AN 509-10R22 0 to 99 0.15 100 and up 0.14
AN 509-10R23 0 to 99 0.17 100 and up 0.16
AN 509-10R24 0 to 99 0.17 100 and up 0.16
AN 509-10R25 0 to 99 0.18 100 and up 0.17
AN 509-10R26 0 to 99 0.18 100 and up 0.17
AN 509-10R27 0 to 99 0.19 100 and up 0.18
AN 509-10R28 0 to 99 0.20 100 and up 0.19
AN 509-10R29 0 to 99 0.21 100 and up 0.19
AN 509-10R30 0 to 99 0.25 100 and up 0.23
AN 509-10R32 0 to 99 0.27 100 and up 0.25
AN 509-10R40 0 to 99 0.45 100 and up 0.40
AN 509-25R 7 0 to 99 0.15 100 and up 0.135
AN 509-25R 8 0 to 99 0.17 100 and up 0.15
AN 509-25R10 0 to 99 0.16 100 and up 0.148
AN 509-25R12 0 to 99 0.15 100 and up 0.135
AN 509-25R13 0 to 99 0.15 100 and up 0.135
AN 509-25R14 0 to 99 0.16 100 and up 0.15
AN 509-25R15 0 to 99 0.17 100 and up 0.16
AN 509-25R18 0 to 99 0.17 100 and up 0.16
AN 509-25R20 0 to 99 0.19 100 and up 0.17
AN 509-25R21 0 to 99 0.19 100 and up 0.171
AN 509-31R36 0 to 99 0.20 100 and up 0.19
AN 509-38R32 0 to 99 0.60 100 and up 0.54

AN 510AN 510
82º FLAT HEAD SCREW, UNF
(Being replaced by MS35190)
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AN 510- 6- 6 0 to 99 0.0388 100 and up 0.0368
AN 510-10- 6 0 to 99 0.06 100 and up 0.05
AN 510-10-10 0 to 99 0.08 100 and up 0.07
AN 510-10-14 0 to 99 0.10 100 and up 0.09
AN 510-10-16 0 to 99 0.10 100 and up 0.09
AN 510-10-20 0 to 99 0.10 100 and up 0.09
AN 510-10R12 0 to 99 0.09 100 and up 0.081
AN 510B 6-14 0 to 99 0.15 100 and up 0.135

AN 515AN 515
ROUND HEAD SCREW, UNF
(Being replaced by MS35206)
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AN 515- 4R 4 0 to 99 0.06 100 and up 0.054
AN 515- 4R 6 0 to 99 0.06 100 and up 0.05
AN 515- 4R 8 0 to 99 0.06 100 and up 0.054
AN 515- 4R10 0 to 99 0.06 100 and up 0.05
AN 515- 4R12 0 to 99 0.06 100 and up 0.054
AN 515- 4R16 0 to 99 0.07 100 and up 0.063
AN 515- 6R 6 0 to 99 0.07 100 and up 0.063
AN 515- 6R10 0 to 99 0.07 100 and up 0.06
AN 515- 6R12 0 to 99 0.08 100 and up 0.07
AN 515- 6R14 0 to 99 0.08 100 and up 0.07
AN 515- 6R32 0 to 99 0.155 100 and up 0.147
AN 515- 8R 6 0 to 99 0.07 100 and up 0.06
AN 515- 8R 7 0 to 99 0.07 100 and up 0.06
AN 515- 8R 8 0 to 99 0.07 100 and up 0.06
AN 515- 8R10 0 to 99 0.07 100 and up 0.06
AN 515- 8R16 0 to 99 0.08 100 and up 0.07
AN 515-10R 6 0 to 99 0.07 100 and up 0.06
AN 515-10R 8 0 to 99 0.07 100 and up 0.06
AN 515-10R14 0 to 99 0.11 100 and up 0.10
AN 515-10R16 0 to 99 0.11 100 and up 0.10
AN 515-25R12 0 to 99 0.19 100 and up 0.18
AN 515B 8-12 0 to 99 0.19 100 and up 0.17
AN 515B 8-18 0 to 99 0.20 100 and up 0.18
AN 515B 8R16 0 to 99 0.20 100 and up 0.18
AN 515C 6R16 0 to 99 0.13 100 and up 0.12
AN 515C 8R 8 0 to 99 0.12 100 and up 0.11

AN 520 / MS35207AN 520
ROUND HEAD SCREW, UNC
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AN 520- 6R 4 0 to 99 0.10 100 and up 0.09
AN 520-10-10 0 to 99 0.07 100 and up 0.063
AN 520-10-18 0 to 99 0.09 100 and up 0.081
AN 520-25R 7 0 to 99 0.15 100 and up 0.14
AN 520B10-16 0 to 99 0.18 100 and up 0.16
AN 520C10-22 0 to 99 0.10 100 and up 0.09

AN 525AN 525
WASHER HEAD SCREW, ALLOY STEEL
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AN 525- 8R 6 0 to 99 0.06 100 and up 0.055
AN 525- 8R 7 0 to 99 0.07 100 and up 0.06
AN 525- 8R 8 0 to 99 0.08 100 and up 0.075
AN 525- 8R 9 0 to 99 0.07 100 and up 0.06
AN 525- 8R10 0 to 99 0.09 100 and up 0.082
AN 525- 8R11 0 to 99 0.08 100 and up 0.07
AN 525- 8R12 0 to 99 0.19 100 and up 0.17
AN 525- 8R14 0 to 99 0.08 100 and up 0.07
AN 525- 8R16 0 to 99 0.10 100 and up 0.09
AN 525- 8R18 0 to 99 0.10 100 and up 0.09
AN 525-10-22 0 to 99 0.13 100 and up 0.12
AN 525-10-28 0 to 99 0.25 100 and up 0.225
AN 525-10R 5 0 to 99 0.07 100 and up 0.063
AN 525-10R 6 0 to 99 0.065 100 and up 0.057
AN 525-10R 7 0 to 99 0.08 100 and up 0.068
AN 525-10R 8 0 to 99 0.12 100 and up 0.11
AN 525-10R 9 0 to 99 0.10 100 and up 0.09
AN 525-10R10 0 to 99 0.12 100 and up 0.11
AN 525-10R11 0 to 99 0.10 100 and up 0.09
AN 525-10R12 0 to 99 0.12 100 and up 0.10
AN 525-10R14 0 to 99 0.11 100 and up 0.099
AN 525-10R16 0 to 99 0.16 100 and up 0.14
AN 525-10R18 0 to 99 0.12 100 and up 0.11
AN 525-10R20 0 to 99 0.13 100 and up 0.12
AN 525-10R22 0 to 99 0.13 100 and up 0.12
AN 525-10R24 0 to 99 0.39 100 and up 0.36
AN 525-10R25 0 to 99 0.23 100 and up 0.22
AN 525-10R26 0 to 99 0.25 100 and up 0.225
AN 525-25R10 0 to 99 0.17 100 and up 0.15
AN 525-25R12 0 to 99 0.17 100 and up 0.16
AN 525-25R14 0 to 99 0.17 100 and up 0.16
AN 525-25R16 0 to 99 0.25 100 and up 0.24
AN 525-25R20 0 to 99 0.30 100 and up 0.29
AN 525-25R24 0 to 99 0.60 100 and up 0.59

AN 526AN 526
TRUSS HEAD SCREW
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AN 526- 4R 6 0 to 99 0.11 100 and up 0.095
AN 526- 4R 8 0 to 99 0.05 100 and up 0.045
AN 526- 4R16 0 to 99 0.08 100 and up 0.07
AN 526- 6- 6 0 to 99 0.07 100 and up 0.06
AN 526- 6R 5 0 to 99 0.06 100 and up 0.05
AN 526- 6R 6 0 to 99 0.07 100 and up 0.06
AN 526- 6R 7 0 to 99 0.07 100 and up 0.063
AN 526- 6R 8 0 to 99 0.07 100 and up 0.06
AN 526- 6R 9 0 to 99 0.07 100 and up 0.06
AN 526- 6R10 0 to 99 0.08 100 and up 0.07
AN 526- 6R12 0 to 99 0.09 100 and up 0.075
AN 526- 6R14 0 to 99 0.08 100 and up 0.065
AN 526- 6R16 0 to 99 0.09 100 and up 0.08
AN 526- 6R20 0 to 99 0.11 100 and up 0.10
AN 526- 6R24 0 to 99 0.10 100 and up 0.09
AN 526- 8- 6 0 to 99 0.06 100 and up 0.05
AN 526- 8R 4 0 to 99 0.07 100 and up 0.065
AN 526- 8R 6 0 to 99 0.06 100 and up 0.05
AN 526- 8R 7 0 to 99 0.07 100 and up 0.063
AN 526- 8R 8 0 to 99 0.075 100 and up 0.07
AN 526- 8R 9 0 to 99 0.07 100 and up 0.06
AN 526- 8R10 0 to 99 0.07 100 and up 0.06
AN 526-8FR10 0 to 99 0.07 100 and up 0.063
AN 526- 8R12 0 to 99 0.08 100 and up 0.07
AN 526- 8R14 0 to 99 0.08 100 and up 0.07
AN 526- 8R16 0 to 99 0.09 100 and up 0.08
AN 526- 8R18 0 to 99 0.09 100 and up 0.081
AN 526- 8R20 0 to 99 0.09 100 and up 0.081
AN 526- 8R24 0 to 99 0.10 100 and up 0.09
AN 526- 8R32 0 to 99 0.11 100 and up 0.10
AN 526-8FR10 0 to 99 0.07 100 and up 0.063
AN 526-10- 6 0 to 99 0.07 100 and up 0.063
AN 526-10- 7 0 to 99 0.08 100 and up 0.07
AN 526-10- 8 0 to 99 0.08 100 and up 0.07
AN 526-10-16 0 to 99 0.10 100 and up 0.09
AN 526-10R 4 0 to 99 0.06 100 and up 0.05
AN 526-10R 5 0 to 99 0.07 100 and up 0.06
AN 526-10R 6 0 to 99 0.07 100 and up 0.06
AN 526-10R 7 0 to 99 0.08 100 and up 0.07
AN 526-10R 8 0 to 99 0.08 100 and up 0.065
AN 526-10R10 0 to 99 0.09 100 and up 0.08
AN 526-10R11 0 to 99 0.09 100 and up 0.08
AN 526-10R12 0 to 99 0.09 100 and up 0.08
AN 526-10R14 0 to 99 0.10 100 and up 0.09
AN 526-10R16 0 to 99 0.10 100 and up 0.09
AN 526-10R18 0 to 99 0.10 100 and up 0.09
AN 526-10R20 0 to 99 0.11 100 and up 0.10
AN 526-10R24 0 to 99 0.11 100 and up 0.099
AN 526-10R32 0 to 99 0.12 100 and up 0.11
AN 526-10R48 0 to 99 0.24 100 and up 0.23
AN 526-25R 9 0 to 99 0.18 100 and up 0.17
AN 526-25R18 0 to 99 0.27 100 and up 0.26

AN 526C
STAINLESS STEEL TRUSS HEAD SCREW
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AN 526C 4R 6 0 to 99 0.09 100 and up 0.08
AN 526C 4R 8 0 to 99 0.09 100 and up 0.078
AN 526C 4R16 0 to 99 0.11 100 and up 0.085
AN 526C 6-16 0 to 99 0.12 100 and up 0.11
AN 526C 6R 4 0 to 99 0.08 100 and up 0.07
AN 526C 6R 6 0 to 99 0.08 100 and up 0.07
AN 526C 6R 8 0 to 99 0.07 100 and up 0.065
AN 526C 6R10 0 to 99 0.09 100 and up 0.081
AN 526C 6R12 0 to 99 0.08 100 and up 0.065
AN 526C 6R16 0 to 99 0.12 100 and up 0.11
AN 526C 8- 4 0 to 99 0.09 100 and up 0.081
AN 526C 8R 4 0 to 99 0.09 100 and up 0.08
AN 526C 8R 6 0 to 99 0.11 100 and up 0.08
AN 526C 8R 7 0 to 99 0.09 100 and up 0.08
AN 526C 8R 8 0 to 99 0.09 100 and up 0.08
AN 526C 8R10 0 to 99 0.11 100 and up 0.10
AN 526C 8R12 0 to 99 0.11 100 and up 0.10
AN 526C 8R16 0 to 99 0.12 100 and up 0.11
AN 526C10R 6 0 to 99 0.10 100 and up 0.09
AN 526C10R 7 0 to 99 0.09 100 and up 0.08
AN 526C10R 8 0 to 99 0.12 100 and up 0.105
AN 526C10R 9 0 to 99 0.11 100 and up 0.10
AN 526C10R10 0 to 99 0.11 100 and up 0.10
AN 526C10R12 0 to 99 0.11 100 and up 0.10
AN 526C10R16 0 to 99 0.13 100 and up 0.12

AN 535AN 535
ROUND HEAD DRIVE SCREW
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AN 535- 2- 4 0 to 99 0.15 100 and up 0.135
AN 535- 4- 4 0 to 99 0.20 100 and up 0.18

AN 565AN 565
SOCKET HEAD SET SCREW

Thread 6-32 8-32 10-32 1/4-20 5/16-24 3/8-24
Dash 6 8 10 25 31 38

First dash number denotes screw size and pitch.
Second dash number denotes length in 1/16ths of an inch.
Add "C" before first dash number to denote cup point.
Add "D" before first dash number to denote dog point.
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AN 565C25- 8 0.34
AN 565C25-20 0.38
AN 565C31- 5 0.75
AN 565C31-10 0.41
AN 565C31-12 0.44
AN 565C38- 4 0.37

MS SCREWS

MS27039 MS27039
PAN HEAD SCREW, STRUCTURAL
Pan head structural screws (replacing NAS 220 series brazzier head screws). Cad plated alloy steel with type 2 yellow chromate coat
First dash number indicates diameter;
-08 = 8/32
-1 = 10/32
-4 = 1/4-28
Second dash number is length in 1/16ths of an inch.
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MS27039-0804 0 to 99 0.09 100 and up 0.08
MS27039-0805 0 to 99 0.09 100 and up 0.08
MS27039-0806 0 to 99 0.07 100 and up 0.06
MS27039-0807 0 to 99 0.09 100 and up 0.08
MS27039-0808 0 to 99 0.09 100 and up 0.075
MS27039-0809 0 to 99 0.10 100 and up 0.09
MS27039-0810 0 to 99 0.08 100 and up 0.07
MS27039-0811 0 to 99 0.10 100 and up 0.09
MS27039-0812 0 to 99 0.12 100 and up 0.11
MS27039-0813 0 to 99 0.11 100 and up 0.099
MS27039-0814 0 to 99 0.11 100 and up 0.099
MS27039-0815 0 to 99 0.11 100 and up 0.099
MS27039-0816 0 to 99 0.11 100 and up 0.099
MS27039-0825 0 to 99 0.14 100 and up 0.13
MS27039-1 04 0 to 99 0.11 100 and up 0.10
MS27039-1 05 0 to 99 0.11 100 and up 0.10
MS27039-1 06 0 to 99 0.11 100 and up 0.10
MS27039-1 07 0 to 99 0.11 100 and up 0.10
MS27039-1 08 0 to 99 0.09 100 and up 0.08
MS27039-1 09 0 to 99 0.11 100 and up 0.10
MS27039-1 10 0 to 99 0.11 100 and up 0.10
MS27039-1 11 0 to 99 0.12 100 and up 0.11
MS27039-1 12 0 to 99 0.12 100 and up 0.11
MS27039-1 13 0 to 99 0.12 100 and up 0.11
MS27039-1 14 0 to 99 0.12 100 and up 0.11
MS27039-1 15 0 to 99 0.13 100 and up 0.12
MS27039-1 16 0 to 99 0.13 100 and up 0.12
MS27039-1 17 0 to 99 0.14 100 and up 0.13
MS27039-4 11 0 to 99 0.23 100 and up 0.22
MS27039-4 16 0 to 99 0.30 100 and up 0.27

MS35206MS35206
PAN HEAD SCREW, NON STRUCTURAL
Pan head screw, non structural (replacing AN 515/520 round head screws). For CRES version, see MS 51957.
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MS35206-207 0 to 99 0.07 100 and up 0.05
MS35206-217 0 to 99 0.09 100 and up 0.07
MS35206-221 0 to 99 0.07 100 and up 0.06
MS35206-222 0 to 99 0.07 100 and up 0.06
MS35206-227 0 to 99 0.09 100 and up 0.08
MS35206-231 0 to 99 0.07 100 and up 0.06
MS35206-233 0 to 99 0.07 100 and up 0.063
MS35206-234 0 to 99 0.08 100 and up 0.07
MS35206-235 0 to 99 0.08 100 and up 0.07
MS35206-238 0 to 99 0.20 100 and up 0.18
MS35206-243 0 to 99 0.07 100 and up 0.06
MS35206-245 0 to 99 0.07 100 and up 0.65
MS35206-247 0 to 99 0.07 100 and up 0.06
MS35206-248 0 to 99 0.08 100 and up 0.07
MS35206-249 0 to 99 0.09 100 and up 0.08
MS35206-250 0 to 99 0.08 100 and up 0.07
MS35206-267 0 to 99 0.10 100 and up 0.088
MS35207-260 0 to 99 0.07 100 and up 0.055
MS35207-261 0 to 99 0.07 100 and up 0.06
MS35207-263 0 to 99 0.08 100 and up 0.07
MS35207-264 0 to 99 0.08 100 and up 0.07
MS35207-265 0 to 99 0.08 100 and up 0.07
MS35207-266 0 to 99 0.08 100 and up 0.07
MS35207-267 0 to 99 0.10 100 and up 0.09

MS35224MS62554

PAN HEAD SCREW, SLOTTED HEAD
Lycoming Valve cover screw (Lycoming part number STD 1925). CAD type II plating. Use with AN 936B-416 star washer.
MS35224-10 0 to 99 0.26 100 and up 0.23

MS 51957 and MS51958
PAN HEAD SCREW, CRES NON STRUCTURAL

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MS51957-41 0 to 99 0.09 100 and up 0.08
MS51957-53 0 to 99 0.26 100 and up 0.234
MS51958-61 0 to 99 0.09 100 and up 0.08
MS51958-71 0 to 99 0.30 100 and up 0.29

NAS 220
BRAZIER HEAD STRUCTURAL SCREW
Cad type 1 (gray) plating. W.S.E. replace with MS 27039.
Final digit in part number is diameter:NAS220
220 = #8-32
221 = 10-32
222 = 1/4-28
223 = 5/16-24
Dash number is length in 1/16ths of an inch.
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NAS 220- 7 0 to 99 0.07 100 and up 0.06
NAS 220- 8 0 to 99 0.07 100 and up 0.06
NAS 220-10 0 to 99 0.07 100 and up 0.06
NAS 220-13 0 to 99 0.08 100 and up 0.07
NAS 220-17 0 to 99 0.09 100 and up 0.08
NAS 221-11 0 to 99 0.10 100 and up 0.09
NAS 221-13 0 to 99 0.09 100 and up 0.08
NAS 221-16 0 to 99 0.09 100 and up 0.08
NAS 221-17 0 to 99 0.10 100 and up 0.09
NAS 221-18 0 to 99 0.10 100 and up 0.09
NAS 221-19 0 to 99 0.10 100 and up 0.09
NAS 222- 7 0 to 99 0.08 100 and up 0.07
NAS 222-11 0 to 99 0.08 100 and up 0.07
NAS 222-12 0 to 99 0.08 100 and up 0.07
NAS 222-13 0 to 99 0.08 100 and up 0.07
NAS 222-15 0 to 99 0.09 100 and up 0.08
NAS 222-16 0 to 99 0.09 100 and up 0.081
NAS 222-17 0 to 99 0.09 100 and up 0.08
NAS 222-19 0 to 99 0.09 100 and up 0.081
NAS 222-21 0 to 99 0.10 100 and up 0.09
NAS 222-22 0 to 99 0.10 100 and up 0.09
NAS 223-18 0 to 99 0.35 100 and up 0.34
NAS 223-19 0 to 99 0.35 100 and up 0.34

NAS 387NAS387
100 degree OVAL HEAD MACHINE SCREW

NAS 387-10-8 0 to 99 0.07 100 and up 0.065
NAS 387-1010 0 to 99 0.08 100 and up 0.07
NAS 387-6-10 0 to 99 0.60 100 and up 0.05
NAS 387-8- 8 0 to 99 0.07 100 and up 0.063
NAS 387-8-10 0 to 99 0.07 100 and up 0.06

INSTRUMENT SCREWS

MS24693Brass Inst Screw
BRASS INST SCREW, 100º FH
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MS24693-BB 2 0 to 99 0.03 100 and up 0.029
MS24693-BB 4 0 to 99 0.04 100 and up 0.036
MS24693-BB25 0 to 99 0.08 100 and up 0.07
MS24693-BB26 0 to 99 0.09 100 and up 0.081
MS24693-BB28 0 to 99 0.10 100 and up 0.09
MS24693-BB29 0 to 99 0.11 100 and up 0.099
MS24693-BB30 0 to 99 0.12 100 and up 0.11
MS24693-BB32 0 to 99 0.13 100 and up 0.12
MS24693-BB34 0 to 99 0.15 100 and up 0.135
MS24693-BB50 0 to 99 0.20 100 and up 0.18
MS24693-BB51 0 to 99 0.22 100 and up 0.20
MS24693-BB54 0 to 99 0.25 100 and up 0.23
MS24693-BB58 0 to 99 0.29 100 and up 0.26

MS35214Phillips Head Screw
BRASS PH INST SCREW
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MS35214- 14 0 to 99 0.11 100 and up 0.10
MS35214- 16 0 to 99 0.14 100 and up 0.13
MS35214- 17 0 to 99 0.14 100 and up 0.13
MS35214- 18 0 to 99 0.14 100 and up 0.13
MS35214- 23 0 to 99 0.14 100 and up 0.13
MS35214- 25 0 to 99 0.14 100 and up 0.13
MS35214- 27 0 to 99 0.14 100 and up 0.13
MS35214- 28 0 to 99 0.15 100 and up 0.14
MS35214- 29 0 to 99 0.14 100 and up 0.13
MS35214- 30 0 to 99 0.15 100 and up 0.14
MS35214- 31 0 to 99 0.15 100 and up 0.14
MS35214- 32 0 to 99 0.15 100 and up 0.14
MS35214- 43 0 to 99 0.15 100 and up 0.14
MS35214- 44 0 to 99 0.15 100 and up 0.14
MS35214- 46 0 to 99 0.15 100 and up 0.14

NAS 487 / MS33737Instrument Nut
INSTRUMENT NUT, 8-32
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NAS 487-21 1.68