Metric hex jam nuts are thin metric hex nuts. They have coarse and fine machine screw threads, like metric hex nuts, but their reduced thickness results in a reduction in strength. They are used with small machine screws to save space or to "jam" against another nut to create a locking action.
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METRIC CLASS 04 HEX JAM NUT, DIN 439B, PLAIN

M5-0.80 METRIC HEX JAM NUT DIN 439
Web Price $244.13
METRIC CLASS 04 HEX JAM NUT, DIN 439B, PLAIN

M5-0.80 METRIC HEX JAM NUT DIN 439
Web Price $17.33
METRIC CLASS 04 HEX JAM NUT, DIN 439B, PLAIN

M6-1.00 METRIC HEX JAM NUT DIN 439
Web Price $216.09
METRIC CLASS 04 HEX JAM NUT, DIN 439B, PLAIN

M8-1.25 METRIC HEX JAM NUT DIN 439
Web Price $191.52
METRIC CLASS 04 HEX JAM NUT, DIN 439B, PLAIN

M8-1.00 METRIC HEX JAM NUT DIN 439
Web Price $223.49
Diameter N/A M5 N/A M5 N/A M6 N/A M8 N/A M8
Pitch N/A Coarse N/A Coarse N/A Coarse N/A Coarse N/A Fine
Length N/A
Material N/A Carbon Steel
Finish N/A Plain
Package Quantity N/A 20000 N/A 1000 N/A 12000 N/A 6000 N/A 6000