Top Quality M3 Star Lock Washers Crafted From Rust Resistant SUS304 Stainless Steel, External Tooth Structure Prevents Loosening Under Vibration, Includes 300 Silver Self Locking Rings For Tough Jobs

M3 Star Lock Washers Seal Threads Securely Against Vibration
✔️ 5.7mm OD x 0.4mm thick M3 lock washer 304 stainless pack 300

You get three hundred locking plates designed to hold fasteners tight under hard shake. These serrated rings grab metal surfaces so bolts stay seated during transport or motor cycles. They fit right into car panels marine wiring home machine housings and any moving threaded joint.

✅ Outer diameter measures five point seven millimeters or zero point two two inches
✅ Inner opening accepts three point two millimeter fasteners or zero point one three inches
✅ Plate thickness sits at zero point four millimeters or zero point two inches
✅ Biting teeth dig into screw heads to block unwanted rotational play
✅ Made of rust resistant three zero four grade alloy for outdoor use

💡 What prevents bolt threads from backing off when equipment vibrates repeatedly? You need external tooth locks that bite directly into mating metals to stop rotation. - Serrated edges punch into the hex head to create high radial friction - Stiff three zero four stainless retains tension across temperature swings - Bulk pack reduces inventory gaps and keeps maintenance runs tight

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