Regular Split Lock Washers M4 Size Medium Carbon Steel Black Oxide Finish Heavy Duty Fasteners For Automotive And Machinery Pack Of 20000 Tough As Nails Build Durable Corrosion Resistant

M4 Regular Split Washers - Black Oxide, 20k Pack
✔️ M4, 0.90mm thick, ID 4.1-4.4mm, OD 7.6mm, black oxide

Regular Split Lock Washers in M4 size made from medium carbon steel with black oxide finish, sold in a pack of 20000 for heavy-duty automotive and machinery applications. These washers are designed to distribute load and resist loosening under vibration. Suitable with bolts up to class 12.9 and are traceable to manufacturer.

✅ Inside diameter: 4.1-4.4mm
✅ Outside diameter: 7.6mm
✅ Thickness: 0.90mm
✅ Material: Medium carbon steel, black oxide finish
✅ Size: M4, pack of 20000

💡 What is a split lock washer used for in mechanical assemblies and how does a black oxide M4 washer help secure fasteners?

This handy guide explains the basics and practical benefits.

- improves vibration resistance for bolt assemblies - helps maintain clamp load under dynamic conditions - suitable for bolts up to class 12.9 and harsh environments