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

Click below to view our certs.

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.
S.A.E. F436 Extra Thick Pattern
S.A.E. 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 .625 .281 0.090 0.110 7,000 48
5/16 .688 .344 0.090 0.110 6,000 47
3/8 .812 .406 0.090 0.110 4,000 40
7/16 .921 .468 0.090 0.110 3,000 42
1/2 1.062 .531 0.156 0.188 1,500 48
9/16 1.187 .593 0.156 0.188 1,000 42
5/8 1.312 .656 0.170 0.195 800 43
3/4 1.468 .812 0.170 0.195 700 44
7/8 1.750 .937 0.235 0.265 400 48
1" 2.000 1.062 0.235 0.265 300 48
1-1/8 2.250 1.250 0.286 0.336 200 49
1-1/4 2.500 1.375 0.286 0.336 150 45
1-3/8 2.750 1.500 0.286 0.336 125 46
1-1/2 3.000 1.625 0.286 0.336 100 44

*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