Cadmium plated steel 1/4-20 bolt used on Autopulse Fuel Pump Model 500. This bolt has a special radius head different from standard 1/4-20 bolts. For use on Duesenberg Model J and other makes.
Material: 12L14
Finish: Cadmium
Thread 1/4-20
Thread length: .500
OAL: .671
Length under head: .500
Hex: .437
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