Stainless Steel Split Ring Lock Washers
What are split ring lock washers? Split ring lock washers are split, twisted-ring washers that spring against the nut and surface to resist loosening from vibration. Made from 304 and 316 stainless, plus A4 metric, they hold joints tight in wet, coastal, and outdoor conditions where a plated washer would rust.
How the split ring resists loosening
A split ring lock washer is a single coil with a gap and a slight twist, so when compressed it acts like a spring pressing against the nut and the surface. That tension resists the reverse rotation vibration causes, and the sharp ends dig in slightly to help hold. It is the general-purpose lock washer for most bolted joints. For heavier grip or grounding, a tooth washer works better. Match the grade to the environment, with 316 or A4 for coastal exposure.
Why choose split ring lock washers
- Spring tension: presses against nut and surface to resist loosening.
- General purpose: the standard lock washer for most joints.
- Corrosion resistance: 304, 316, and A4 hold up in wet and outdoor use.
- Simple: installs with any standard nut and bolt.
Common applications for split ring lock washers
- General bolted joints under vibration
- Machinery and equipment
- Outdoor structures and railings
- Marine and coastal hardware (316 or A4)
For socket cap screw counterbores, see stainless high collar split ring lock washers, and browse every type on the main lock washers category.
Split Ring Lock Washers FAQ
What grades do split ring lock washers come in?
304 and 316 stainless, plus metric A4. Use 316 or A4 for coastal and saltwater exposure.
Split ring or tooth lock washer?
Split ring is the general-purpose choice. Tooth washers grip harder and, with external teeth, provide electrical grounding.
Do split ring washers work with stainless bolts?
Yes. Match the washer grade to the bolt, and use anti-seize on the threads since stainless can gall under torque.