Metric nylon inset lock nuts are basically a hex nut with a nylon-filled collar at its back end. When a screw reaches the collar, the threads and nylon form a tight, frictional fit, restricting movement of the screw when it's subject to vibration.
Unit of Measure
Items
METRIC STAINLESS A2 70 NYLON INSERT THIN LOCKNUT, DIN 985

M2.5-0.45 METRIC NYLON INSERT LOCK NUT DIN 985 A2-70 STAINLESS
Web Price QUOTE

METRIC STAINLESS A2 70 NYLON INSERT THIN LOCKNUT, DIN 985

M3-0.50 METRIC NYLON INSERT LOCK NUT DIN 985 A2-70 STAINLESS
Web Price $167.61

METRIC STAINLESS A2 70 NYLON INSERT THIN LOCKNUT, DIN 985

M3-0.50 METRIC NYLON INSERT LOCK NUT DIN 985 A2-70 STAINLESS
Web Price QUOTE

METRIC STAINLESS A2 70 NYLON INSERT THIN LOCKNUT, DIN 985

M4-0.70 METRIC NYLON INSERT LOCK NUT DIN 985 A2-70 STAINLESS
Web Price $219.71

METRIC STAINLESS A2 70 NYLON INSERT THIN LOCKNUT, DIN 985

M4-0.70 METRIC NYLON INSERT LOCK NUT DIN 985 A2-70 STAINLESS
Web Price $5.70
Diameter N/A M2.5 N/A M3 N/A M3 N/A M4 N/A M4
Pitch N/A Coarse
Length N/A
Material N/A A2-70 Stainless
Finish N/A Plain
Package Quantity N/A 5000 N/A 5000 N/A 100 N/A 5000 N/A 100