Top-quality backing plates constructed of case-hardened steel or heat-treated aircraft aluminum
Durable radiused-dome design prevents bending
Steel plates measure .075in. thick x 1 1/8in.; aluminum plates measure 1/8in. thick x 1 1/8in.
Machined aluminum plate fits 5/16in. studs with 1 1/4in. OD
5/16in. hole
Product Series