Grade 8 Yellow Zinc High Collar Split Ring Lock Washers
What are Grade 8 yellow zinc high collar lock washers? Grade 8 yellow zinc high collar lock washers are hardened, narrow, thick helical spring washers made for socket head cap screws, with a yellow zinc plating. The hardened steel holds up under high-strength cap screws while the smaller outer diameter fits under socket heads and in counterbored holes.
Do I need a Grade 8 high collar lock washer?
Split ring washers work best when hardened, so they bite the surfaces and hold spring tension without flattening. Socket head cap screws are often high-strength alloy, so a Grade 8 high collar washer matches that strength, resisting deformation under the clamping force while its reduced outer diameter fits under the cap head and in a counterbored hole. The extra thickness keeps the locking force, and the yellow zinc plating adds corrosion resistance and signals the higher-strength grade. Pair it with Grade 8 or alloy socket cap screws. Tighten to the correct torque to activate the spring action.
Why choose Grade 8 yellow zinc high collar split ring lock washers
- Hardened: holds locking action under high-strength cap screws.
- Fits socket cap screws: smaller OD for counterbored holes.
- Yellow zinc: corrosion resistance and a high-strength cue.
- Vibration locking: thick split ring bites the surface to resist loosening.
Common applications for Grade 8 high collar lock washers
- High-strength socket cap screw joints
- Heavy machinery and equipment
- Counterbored holes and tight clearances
- Automotive and structural work
For a corrosion-resistant stainless option, see 304 stainless high collar split ring lock washers, and browse every material on the main lock washers category.
Grade 8 Yellow Zinc High Collar Split Ring Lock Washers FAQ
Why choose a Grade 8 high collar washer?
It is hardened to match high-strength socket cap screws, holding its locking action where a softer washer might flatten.
Why is the zinc yellow?
Yellow zinc plating offers more corrosion resistance than clear zinc and commonly signals a higher-strength grade.
Why use a high collar washer with a socket cap screw?
Its smaller outer diameter fits under the narrow head of a socket head cap screw and into a counterbored hole, where a standard washer would be too wide.