Swordfish 30330-210pcs Nylon Insert Lock Nut Assortment 12 sizes from #4-40 to 5/8"-11 Zinc Plated Steel

Swordfish 30330 - 210pcs Nylon Insert Lock Nut Assortment - #4-40 to 5/8"-11 - Zinc Plated SteelContains:#4-40 (25pc)#5-40 (25pc)#6-32 (25pc)#8-32 (25pc)#10-24 (25pc)#10-32 (25pc)1/4"-20 (15pc)5/16"-18 (15pc)3/8"-16 (10pc)7/16"-14 (10pc)1/2"-13 (5pc)5/8"-11 (5pc)

• 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 is subjected to vibration.
• Designed to be used with like-material machine screws and bolts. It is able to be reused more times than a two-way reversible nut
• Steel nylon insert stop nuts are less expensive than grade C automation lock nuts.
• AISI 1008-1010 or equivalent steel material used.
• Hardness: Rockwell C28 maximum and Proof Load: 90,000 PSI minimum