Hillman 3/8 In. Alloy Steel Yellow Dichromate Split Lock Washer (100 Ct.)

Hardened, yellow dichromate split lock washer prevents nuts and bolts from turning, slipping, and coming loose because of vibration and torque. Grade 8. These fasteners contain split ends that help "lock" into the mating material, thus providing a locking feature when tightened beneath a nut.

Features:

• Appropriate for marine and heavy machinery applications (match with Grade 8 washers and nuts)
• Commonly used in applications where two pieces of wood are being joined together
• Split ends grip the material surface to prevent loosening during vibration
• Yellow dichromate combines lasting durability with strong rust protection
• Prevents a nut, bolt, or screw of the same finish and size from pulling through material
• These washers are approved for use in any project involving treated lumber