Free Spinning Washer Nut 3/8-16, 7/8 In Washer OD, Hex 9/16, 25 Pack

Free Spinning Washer Nut 3/8-16, 7/8 inch Washer OD
✔️ 3/8-16 thread, 7/8 in washer OD, hex 9/16, height 7/16, 25 pack

These free spinning washer nuts are locking fasteners with a free-spinning washer, designed to resist loosening under vibration. This 25-piece pack is compatible with Ford 376785 and other 3/8-16 bolt systems, with a phosphate finish for corrosion resistance.

✅ 3/8-16 thread size
✅ 7/8 in washer OD
✅ hex size 9/16 in
✅ height 7/16 in
✅ phosphate coated finish for corrosion resistance
✅ 25 pieces per pack

💡 What is a free spinning washer nut used for in mechanical assemblies?

A handy fastener that helps prevent loosening in vibration-prone setups. Here are key points:

- ideal for 3/8-16 bolt threads with 7/8 in washer diameters
- maintains preload and resists loosening under dynamic loads
- good for automotive, machinery, and workshop applications
- phosphate-coated finish adds extra corrosion resistance in harsh environments