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

SHEET METAL SCREWS
AN 530 Round Head Type B, AN 531 82º Flat Head Type B, NAS 384 to NAS 385 Oval Head, NAS 548 100º Flat Head Type B,"PK" Commercial Sheet Metal Screws: Type A, Type B, Stainless Type A, Stainless Type B, NAS 390 82º Finish Washer, NAS 391 82º Countersunk Finish Washer, NAS 1169 Tinnerman Large Area 100º Countersunk Washer,Tinnerman Nuts for Type B sheet metal screws: NAS 395 Speed Nut, NAS 444 Anchor Nut, NAS446 Flat Speed Nut.

Dash Size # Body Diameter (Thread O.D)
4 .110"
6 .135"
8 .158"
10 .187"

AN 530AN 530
ROUND HEAD TYPE B SHEET
METAL SCREW
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AN 530- 8R10 0 to 99 0.05 100 and up 0.04

AN 531AN 531
82 FLAT HEAD TYPE B SHEET
METAL SCREW
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AN 531- 8R10 0 to 99 0.05 100 and up 0.04

NAS 384 to NAS 385NAS 384
OVAL HD SHT MTL SCREW, TYPE B, 100º COUNTERSUNK

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NAS 384-6- 8 0 to 99 0.08 100 and up 0.07
NAS 384-6-10 0 to 99 0.09 100 and up 0.08
NAS 384-8- 8 0 to 99 0.10 100 and up 0.09

NAS 385-4-8 0 to 99 0.045 100 and up 0.04
NAS 385-6-8 0 to 99 0.08 100 and up 0.07
NAS 385-10-8 0 to 99 0.10 100 and up 0.09

NAS 548NAS 548
100º FLAT HEAD TYPE B SHEET METAL SCREW
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NAS 548C 8-8 0 to 99 0.09 100 and up 0.085
NAS 548C 810 0 to 99 0.16 100 and up 0.15
NAS 548C10-8 0 to 99 0.26 100 and up 0.24
NAS 548C1010 0 to 99 0.30 100 and up 0.27
NAS 548P 6-8 0 to 99 0.07 100 and up 0.055
NAS 548P 8-8 0 to 99 0.13 100 and up 0.12
NAS 548P 810 0 to 99 0.09 100 and up 0.085
NAS 548P10-6 0 to 99 0.12 100 and up 0.10
NAS 548P10-8 0 to 99 0.13 100 and up 0.12

"PK" COMMERCIAL SHEET METAL SCREWSPK Part Number Chart
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Since AN, NAS and MS part numbers do not cover every possible sheet metal screw configuration, a full line of commercial screws are offered. These are available in type A style (pointed tip) and type B (blunt tip and slightly finer thread pitch). Type B should be used with tinnerman nuts and any application where the tips are exposed, such as shrouding, etc. Plating on steel screws is bright zinc. Stainless steel screws are also available with the "PS" prefix.

SHEET METAL SCREW, TYPE A
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PKA 4- 4FH 0 to 99 0.04 100 and up 0.03
PKA 4- 4TH 0 to 99 0.04 100 and up 0.03
PKA 4R 4TH 0 to 99 0.045 100 and up 0.04
PKA 4R 6FH 0 to 99 0.04 100 and up 0.03
PKA 4R 6TH 0 to 99 0.04 100 and up 0.035
PKA 4R 8TH 0 to 99 0.04 100 and up 0.032
PKA 4R10TH 0 to 99 0.04 100 and up 0.03
PKA 4R12FH 0 to 99 0.04 100 and up 0.03
PKA 4R12TH 0 to 99 0.05 100 and up 0.04
PKA 6- 4TH 0 to 99 0.04 100 and up 0.03
PKA 6- 6FH 0 to 99 0.04 100 and up 0.03
PKA 6- 6TH 0 to 99 0.04 100 and up 0.03
PKA 6-12OH 0 to 99 0.05 100 and up 0.04
PKA 6-16OH 0 to 99 0.06 100 and up 0.05
PKA 6R 4TH 0 to 99 0.04 100 and up 0.03
PKA 6R 6FH 0 to 99 0.05 100 and up 0.04
PKA 6R 6TH 0 to 99 0.05 100 and up 0.044
PKA 6R 8FH 0 to 99 0.05 100 and up 0.04
PKA 6R 8TH 0 to 99 0.06 100 and up 0.035
PKA 6R10FH 0 to 99 0.05 100 and up 0.04
PKA 6R10TH 0 to 99 0.05 100 and up 0.04
PKA 6R12FH 0 to 99 0.07 100 and up 0.06
PKA 6R12TH 0 to 99 0.05 100 and up 0.04
PKA 6R16FH 0 to 99 0.06 100 and up 0.05
PKA 8-10TH 0 to 99 0.05 100 and up 0.04
PKA 8-12TH 0 to 99 0.05 100 and up 0.04
PKA 8-14OH 0 to 99 0.06 100 and up 0.05
PKA 8R 4TH 0 to 99 0.04 100 and up 0.035
PKA 8R 6FH 0 to 99 0.05 100 and up 0.04
PKA 8R 6TH 0 to 99 0.05 100 and up 0.04
PKA 8R 8FH 0 to 99 0.05 100 and up 0.04
PKA 8R 8TH 0 to 99 0.05 100 and up 0.042
PKA 8R10FH 0 to 99 0.05 100 and up 0.04
PKA 8R10TH 0 to 99 0.05 100 and up 0.04
PKA 8R12FH 0 to 99 0.05 100 and up 0.04
PKA 8R12OH 0 to 99 0.05 100 and up 0.045
PKA 8R12TH 0 to 99 0.05 100 and up 0.04
PKA 8R16FH 0 to 99 0.06 100 and up 0.05
PKA 8R16TH 0 to 99 0.06 100 and up 0.05
PKA 8R20RH 0 to 99 0.07 100 and up 0.06
PKA 8R20TH 0 to 99 0.07 100 and up 0.062
PKA10- 6TH 0 to 99 0.05 100 and up 0.04
PKA10- 8TH 0 to 99 0.05 100 and up 0.04
PKA10-10TH 0 to 99 0.05 100 and up 0.04
PKA10-12TH 0 to 99 0.05 100 and up 0.04
PKA10-16TH 0 to 99 0.06 100 and up 0.05
PKA10R 6TH 0 to 99 0.06 100 and up 0.0557
PKA10R 8FH 0 to 99 0.06 100 and up 0.05
PKA10R 8OH 0 to 99 0.06 100 and up 0.05
PKA10R 8PH 0 to 99 0.05 100 and up 0.044
PKA10R 8TH 0 to 99 0.05 100 and up 0.04
PKA10R10FH 0 to 99 0.06 100 and up 0.05
PKA10R10TH 0 to 99 0.05 100 and up 0.04
PKA10R12FH 0 to 99 0.05 100 and up 0.04
PKA10R12TH 0 to 99 0.05 100 and up 0.04
PKA10R16TH 0 to 99 0.06 100 and up 0.05
PKA10R24TH 0.18

SHEET METAL SCREW, TYPE B
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PKB 4R 6TH 0 to 99 0.04 100 and up 0.03
PKB 4R 8TH 0 to 99 0.04 100 and up 0.036
PKB 6R 4TH 0 to 99 0.04 100 and up 0.03
PKB 6R 6FH 0 to 99 0.04 100 and up 0.03
PKB 6R 6TH 0 to 99 0.06 100 and up 0.048
PKB 6R 8FH 0 to 99 0.04 100 and up 0.03
PKB 6R 8TH 0 to 99 0.04 100 and up 0.034
PKB 6R12TH 0 to 99 0.04 100 and up 0.03
PKB 8R 6FH 0 to 99 0.05 100 and up 0.04
PKB 8R 6TH 0 to 99 0.05 100 and up 0.04
PKB 8R 8RH 0 to 99 0.05 100 and up 0.04
PKB 8R 8TH 0 to 99 0.06 100 and up 0.055
PKB 8R10FH 0 to 99 0.05 100 and up 0.04
PKB 8R10OH 0 to 99 0.05 100 and up 0.04
PKB 8R10TH 0 to 99 0.05 100 and up 0.04
PKB 8R12FH 0 to 99 0.05 100 and up 0.04
PKB 8R12OH 0 to 99 0.05 100 and up 0.04
PKB10R 6FH 0 to 99 0.05 100 and up 0.04
PKB10R 6TH 0 to 99 0.06 100 and up 0.05
PKB10R 8TH 0 to 99 0.06 100 and up 0.04
PKB10R10TH 0 to 99 0.05 100 and up 0.04
PKB10R12FH 0 to 99 0.06 100 and up 0.05
PKB10R16TH 0 to 99 0.06 100 and up 0.05

STAINLESS STEEL SHEET METAL SCREW, TYPE A
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PSA 4R 4TH 0 to 99 0.05 100 and up 0.04
PSA 4R 6OH 0 to 99 0.05 100 and up 0.04
PSA 4R 6TH 0 to 99 0.06 100 and up 0.04
PSA 4R 8OH 0 to 99 0.06 100 and up 0.05
PSA 4R 8TH 0 to 99 0.07 100 and up 0.063
PSA 6R 6TH 0 to 99 0.07 100 and up 0.055
PSA 6R 8OH 0 to 99 0.08 100 and up 0.07
PSA 6R 8TH 0 to 99 0.07 100 and up 0.06
PSA 6R10TH 0 to 99 0.09 100 and up 0.078
PSA 6R12OH 0 to 99 0.09 100 and up 0.081
PSA 6R16TH 0 to 99 0.10 100 and up 0.09
PSA 8R 6RH 0 to 99 0.08 100 and up 0.07
PSA 8R 6TH 0 to 99 0.08 100 and up 0.072
PSA 8R 8TH 0 to 99 0.07 100 and up 0.06
PSA 8R10FH 0 to 99 0.09 100 and up 0.08
PSA 8R10TH 0 to 99 0.08 100 and up 0.07
PSA 8R12FH 0 to 99 0.11 100 and up 0.095
PSA 8R12TH 0 to 99 0.06 100 and up 0.045
PSA10R 8TH 0 to 99 0.09 100 and up 0.08
PSA10R10FH 0 to 99 0.12 100 and up 0.10
PSA10R10TH 0 to 99 0.10 100 and up 0.09
PSA10R12TH 0 to 99 0.10 100 and up 0.09

STAINLESS STEEL SHEET METAL SCREWS, TYPE B
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PSB 8R 8TH 0 to 99 0.05 100 and up 0.042
PSB 8R10TH 0 to 99 0.06 100 and up 0.055
PSB10R 8TH 0 to 99 0.07 100 and up 0.055

NAS 390NAS390
FINISH WASHER, 82º a.k.a. 601
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NAS 390-B 4P 0 to 99 0.30 100 and up 0.28
NAS 390-B 6P 0 to 99 0.23 100 and up 0.20
NAS 390-B 8P 0 to 99 0.21 100 and up 0.18
NAS 390-B10P 0 to 99 0.11 100 and up 0.10

NAS 391NAS 391
FINISH WASHER COUNTERSUNK 82º
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NAS 391-B 4P 0 to 99 0.65 100 and up 0.62
NAS 391-B 6P 0 to 99 0.06 100 and up 0.05
NAS 391-B 8P 0 to 99 0.07 100 and up 0.063
NAS 391-B10P 0 to 99 0.06 100 and up 0.50

NAS 1169NAS1169
TINNERMAN WASHER, LARGE AREA, 100º COUNTERSUNK
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NAS1169- 6Z 0 to 99 0.17 100 and up 0.15
NAS1169- 8Z 0 to 99 0.18 100 and up 0.16
NAS1169-10Z 0 to 99 0.16 100 and up 0.14
NAS1169-C 6 0 to 99 0.19 100 and up 0.17
NAS1169-C 8 0 to 99 0.14 100 and up 0.135
NAS1169-C10 0 to 99 0.15 100 and up 0.12

TINNERMAN NUTS (Require Type "B" sheet metal screws)
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Screw Size NAS 395
U Type - NAS 395
NAS 444
Anchor nut - NAS 444
NAS 446
Flat type - NAS 446
    Tinnerman Part#   Tinnerman Part#   Tinnerman Part#
#4     NAS 444- 0 A6195-4 Z-1 NAS 446-1 A1776-4Z-1
#6 NLA A188-6 Z-1 NAS 444-2 A6195-6 Z-1    
NAS 395- 6 A1784-6 Z-1 NAS 444-1 A6191-6 Z-1 NAS 446-2 A1181-6 Z-1
#8 NAS 395-12 A1786-8 Z-1 NAS 444-4 A6191-8 Z-1 NAS 446-4 A1778-8 Z-1
NAS 395-14 A1274-8 Z-1 NAS 444-5 A6195-8 Z-1    
NAS 395-16 A1789-8 Z-1        
NAS 395-17 A1348-8 Z-1        
NAS 395-18 A1787-8 Z-1        
NAS 395-(long 17) A1788-8 Z-1D        
#10 NAS 395-23 A1794-10Z-1 NAS 444-8 A6195-10 Z-1 NAS 446-5 A1779-10 Z-1
NAS 395-24 A1758-10Z1D        

NAS 395
TINNERMAN SPEED NUT, U-TYPE
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NAS 395- 5 0 to 99 0.38 100 and up 0.33
NAS 395- 6 0 to 99 0.30 100 and up 0.27
NAS 395-12 0 to 99 0.50 100 and up 0.49
NAS 395-14 0 to 99 0.33 100 and up 0.30
NAS 395-16 0 to 99 0.40 100 and up 0.36
NAS 395-17 0 to 99 0.27 100 and up 0.25
NAS 395-18 0 to 99 0.39 100 and up 0.34
NAS 395-23 0 to 99 0.29 100 and up 0.26
NAS 395-24 0 to 99 0.29 100 and up 0.26
NAS 395-34 0 to 99 0.26 100 and up 0.23

NAS 444
TINNERMAN ANCHOR NUT
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NAS 444- 0 0 to 99 0.30 100 and up 0.28
NAS 444- 1 0 to 99 0.38 100 and up 0.31
NAS 444- 2 0 to 99 0.48 100 and up 0.44
NAS 444- 4 0 to 99 0.38 100 and up 0.335
NAS 444- 5 0 to 99 0.41 100 and up 0.30
NAS 444- 8 0 to 99 0.43 100 and up 0.34

NAS 446
TINNERMAN SPD NUT, FLAT TYPE
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NAS 446- 1 0 to 99 0.20 100 and up 0.18
NAS 446- 2 0 to 99 0.18 100 and up 0.17
NAS 446- 4 0 to 99 0.25 100 and up 0.19
NAS 446- 5 0 to 99 0.30 100 and up 0.25