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ISO 9001:2000

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S.A.E. F436 Pattern
ASTM F436 Pattern Through Hardened Flat Washers
For Use with ASTM A325/A490 & Grades 5,8,9 Bolts
Bolt Size Outside Diameter Inside Diameter Thickness Pieces Per
Box
Weight Per
1,000
- - - Min Max - -
1/4 5/8 9/32 0.051 0.080 9,000 3.7
5/16 11/16 11/32 0.051 0.080 8,000 4.3
3/8 13/16 13/32 0.051 0.080 6,000 7.0
7/16 59/64 15/32 0.051 0.080 4,000 7.5
1/2 1-1/16 17/32 0.097 0.177 2,000 18.0
5/8 1-5/16 11/16 0.122 0.177 1,800 32.7
3/4 1-15/32 13/16 0.122 0.177 1,000 40.0
7/8 1-3/4 15/16 0.136 0.177 750 64.0
1 2 1-1/8 0.136 0.177 500 82.0
1-1/8 2-1/4 1-1/4 0.136 0.177 400 105.0
1-1/4 2-1/2 1-3/8 0.136 0.177 300 136.6
1-3/8 2-3/4 1-1/2 0.136 0.177 300 163.0
1-1/2 3 1-5/8 0.136 0.177 200 190.0
1-3/4 3-3/8 1-7/8 0.178 0.280 150 306.7
2 3-3/4 2-1/8 0.178 0.280 100 380.0
2-1/4 4 2-3/8 0.240 0.340 50 560.0
2-1/2 4-1/2 2-5/8 0.240 0.340 50 720.0
2-3/4 5 2-7/8 0.240 0.340 50 910.0
3 5-1/2 3-1/8 0.240 0.340 50 1,040.0
3-1/4 6 3-3/8 0.240 0.340 40 1,370.0
3-1/2 6-1/2 3-5/8 0.240 0.340 30 1,620.0
3-3/4 7 3-7/8 0.240 0.340 25 1,890.0
4 7-1/2 4-1/8 0.240 0.340 20 2,185.0

Dimension To 1-1/2"Normal Bolt Size, Incl. Over 1-1/2"Normal Bolt Size, Incl. Over 3" Normal Size, Incl.
I.D. -0, +1/32 -0, +1/16 -0, +1/8
O.D. +/-1/32 +/-1/16 +/-1/8
Flatness 0.010 0.015 0.032
Concentricity *Full Indicator Reading 0.030 FIR* 0.090 FIR* 0.250 FIR*
Burr(Max.) 0.010 0.015 0.025

*All Items are sold by the carton only !
Chemical and Physical Test Reports are available.
Items Are Stocked in Plain, Zinc, Zinc Yellow & Hot Dip Galv.