+ + Brass hex Jam Nuts ANSI/ASME B18.2.2. Brass Jam Nuts
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Hex Brass Jam Nuts

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Brass hex Jam Nuts ANSI/ASME B18.2.2. Brass Jam Nuts

 

Thread Size   
Hex Size
Across Flats
Size
Across Corners
Nut Thickness
BasicMaxMinMaxMinBasicMaxMin
1/4 " .250  7/16 .438 .428 .502 .488 5/32 .163 .150
5/16 " .312  1/2 .500 .489 .577 .557 3/16 .195 .180
3/8 " .375  9/16 .562 .551 .650 .628 7/32 .227 .210
7/16 " .437 11/16 .688 .675 .794 .768 1/4 .260 .240
1/2 " .500 3/4 .750 .736 .866 .840 5/16 .323 .302
9/16 " .562 7/8 .875 .851 1.010 .982 5/16 .324 .301
5/8 " .625 15/16 .938 .922 1.093 1.051 3/8 .387 .363
3/4 " .750 1-1/8 1.125 1.088 1.299 1.240 27/64 .446 .398
7/8 " .875 1-5/16 1.312 1.269 1.516 1.447 31/64 .510 .458
1 " 1.000 1-1/2 1.500 1.450 1.732 1.653 35/64 .575 .519
1-1/8 " 1.125 1-11/16 1.688 1.631 1.949 1.859 39/64 .639 .579
1-1/4 " 1.250 1/7/8 1.875 1.812 2.165 2.066 23/32 .751 .687
1-3/8 " 1.375 2-1/16 2.062 1.994 2.382 2.273 25/32 .815 .747
1-1/2 " 1.500 2-1/4 2.250 2.175 2.598 2.480 27/32 .880 .808
1-3/4 " 1.750 2-5/8 2.625 2.538 3.031 2.893 31/32 1.009 .929
2 " 2.000 3 3.000 2.900 3.464 3.306 1-3/32 1.138 1.050

We are one of the leading suppliers of  Brass Jam Nuts Hex jam nuts thin Jam nuts to ANSI standards.

Description: A Jam nuts is a six sided Brass nut with  double sided chamfers used in fastening of bolts screws and fasteneing products

Threads: UNC UNEF UNF UNS and also metric BSW BSPP BSPT NPT

 

Jam nuts are thin hex nuts usually used as a second nut that is "jammed" (tightened) against a full size nut or alone as a thin nut. They are used to "lock" turnbuckles and control linkages, like steering tie rods, after adjustment. Hex is short for hexagon, which means they have six sides. Jam nuts are also known as:  Jam nuts are used without lock washers when jammed against another nut, and may be used with lock washers when installed as a single nut.

When used as a "jam"  fitting, the jam nut is installed first and contacts the mating surface. The full size nut is installed second and contacts the jam nut. 

 

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