No Slip One Quarter Inch External Internal Combo Tooth Lock Washers Black Oxide Coating Heavy Duty Hardware For Locking Bolts And Nuts On Everyday Shop Jobs

Rugged quarter inch external internal combo tooth lock washers
✔️ Spring tempered steel construction ensures steady load holding power

This quarter inch split ring hardware is highly handy for locking down bolts on shop presses and trailer frames where normal flat washers slip loose.

✅ Quarter inch outer diameter matches standard heavy duty bolt threads
✅ Dual layer external lip and serrated core maximize friction contact area
✅ Corrosion resistant black oxide surface guards against rust during storage
✅ Spring loaded design maintains constant tension across moving parts

💡 What is a combo tooth lock washer used for in industrial machinery
This split ring setup is handy for biting into mating surfaces to stop bolts from backing off during heavy vibration cycles.
- Anti rattle geometry keeps threaded rods seated tight under engine tremors
- Oversized bore accommodates factory drilled holes that got too big over time
- Conductive steel backbone improves grounding paths when sealing electrical boxes
- Flexible metal springs adapt to uneven gaps while preserving bolt preload

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