5/16 in. Black Exterior Split Lock Washers (50-Pack)

Item # 315966002 | The Hillman Group Part # 261253 | UPC Code 038902215314 | UNSPSC Code 31161800
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Product Overview

Engineered to provide more uniform load distribution, split lock washers are great for any indoor/outdoor project. Ideal for situations where potential loosening from corrosion or vibration is a concern, split lock washers are used to prevent nuts and bolts from coming loose. These fasteners contain split ends that help lock into the mating material, thus providing a locking feature when tightened beneath a nut. The black ceramic finish offers superior corrosion resistance while conforming to the latest trends in hardware. Parts measure 5/16 in. Dia. Use with treated lumber in applications with like nuts and bolts of similar diameter.

  • Designed for applications using a bolt or a screw where 2-pieces are being joined together
  • Black ceramic finish combines superior corrosion resistance with modern aesthetics
  • Install with like nuts and bolts of similar diameter
  • For use with any indoor or outdoor project with treated lumber
  • Split ends grip the material surface to prevent loosening during vibration
  • Parts carry a limited lifetime warranty


Finish Family
Manufacturer Warranty
Limited Lifetime Warranty
Measurement Standard
Package Quantity
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Limited Lifetime Warranty