Flat Washer Specifications

USS Washers

Bolt Diameter	Outside Diameter	Hole Diameter	Dimensions Thickness Gauge	Inches	* Approx. Number in 100 lbs.	Approx. 1000 Pcs in lbs.
1/8 3/16 1/4 5/16	7/16 9/16 3/4 7/8	3/16 1/4 5/16 3/8	18 18 16 14	3/64 3/64 1/16 5/64	55400 29400 16200 9600	1.8 3.4 6.2 10.4
3/8 7/16 1/2 9/16	1 1-1/4 1-3/8 1-1/2	7/16 1/2 9/16 5/8	14 13 12 12	5/64 3/32 7/64 7/64	7460 3800 2740 2300	13.4 26.2 36.6 43.3
5/8 5/8 3/4 3/4	1-3/4 1-3/4 2 2	11/16 3/4 13/16 7/8	10 10 10 9	9/64 9/64 9/64 5/32	1290 1340 1000 930	77.5 74.8 100.0 107.6
7/8 7/8 1 S 1 L	2-1/4 2-1/4 2-1/2 2-1/2	15/16 1 1-1/16 1-1/8	9 9 9 9	5/32 5/32 5/32 5/32	720 740 580 600	139.2 135.2 170.4 165.9
1-1/8 S 1-1/8 L 1-1/4 S 1-1/4 L	2-3/4 2-3/4 2-3/4 3	1-3/16 1-1/4 1-5/16 1-3/8	9 9 9 9	5/32 5/32 5/32 5/32	490 500 520 420	204.7 199.7 194.3 236.6
1-3/8 1-1/2 S 1-1/2 L 1-5/8	3-1/4 3-1/4 3-1/2 3-1/4	1-1/2 1-9/16 1-5/8 1-3/4	9 8 8 8	5/32 11/64 11/64 11/64	360 340 280 250	276.6 297.2 351.6 402.5
1-3/4 S 1-3/4 L 2 S 2 L	3-3/4 4 4-1/4 4-1/2	1-13/16 1-7/8 2-1/16 2-1/8	7 7 7 7	3/16 3/16 3/16 3/16	230 200 180 160	430.1 498.3 551.1 628.0

S.A.E. Washers

3/16 1/4 5/16 3/8	1/2 5/8 11/16 13/16	7/32 9/32 11/32 13/32	16 16 16 16	1/16 1/16 1/16 1/16	37000 24400 21200 15140	2.7 4.1 4.7 6.6
7/16 1/2 9/16 5/8	59/64 1-1/16 1-3/16 1-5/16	15/32 17/32 19/32 21/32	16 13 13 13	1/16 3/32 3/32 3/32	11360 5900 4740 3880	8.8 16.9 21.1 25.8
3/4 7/8 1	1-1/2 1-3/4 2	13/16 15/16 1-1/16	11 11 11	1/8 1/8 1/8	2360 1720 1310	42.3 58.1 76.4

USS Washers Hot Dip Galvanized

1/4 5/16 3/8 7/16 1/2	3/4 7/8 1 1-1/4 1-3/8	5/16 3/8 7/16 1/2 9/16	16 14 14 13 12	1/16 5/64 5/64 3/32 7/64	15700 9100 6500 3350 2400
9/16 5/8 3/4 7/8	1-1/2 1-3/4 2 2-1/4	5/8 11/16 13/16 15/16	12 10 10 9	7/64 9/64 9/64 5/32	2100 1200 950 660
1 S 1-1/8 L 1-1/4 S	2-1/2 2-3/4 2-3/4	1-1/16 1-1/4 1-5/16	9 9 9	5/32 5/32 5/32	530 460 480

* Quantity per pound may vary ± 15% based on I.F.I. allowable thickness tolerances.