Accreditations
B.M.P. is currently ISO 9001:2015 registered.

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ISO 9001:2015
Printable version Here


Raw Material Updates
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B.M.P. Workmanship
Click here to view our acceptable washer workmanship standards and measuring techniques
Machining
Binder Metal now offers full machining capabilities. Click here for more info.
USS Hardened Extra Thick pattern
USS Through Hardened Extra Thick Pattern 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 Box
-

-

-

Min

Max

- -
1/4 3/4 5/16

0.090

0.110

4,000

42

5/16 7/8 3/8 0.112 0.130

2,500

42

3/8 1" 7/16 0.112 0.130 2,000 43
7/16 1-1/4 1/2 0.140 0.158 1,000 43
1/2 1-3/8 9/16 0.170 0.195 700 45
9/16 1-1/2 5/8 0.170 0.195 600 46
5/8 1-3/4 11/16 0.195 0.215 400 46
3/4 2" 13/16 0.235 0.265 250 46
7/8 2-1/4 15/16 0.235 0.265 200 46
1" 2-1/2 1-1/16 0.235 0.265 150 42

1-1/8

2-3/4

1-1/4

0.286 0.336

100

42

1-1/4 3"

1-3/8

0.286 0.336 80 39
1-3/8 3-1/4 1-1/2 0.286 0.336 70 40
1-1/2 3-1/2 1-5/8 0.286 0.336 60 39

*All Items are sold by the carton only!
Items are stocked in Plain and Zinc Yellow Finish
Chemical and Physical Test Reports are available
Please Call For Availability