4140 Heat treated steel hex bolt with M10-1.50 thread. Suitable for use in many European automobiles of the mid 1930’s. Used specifically as a bumper bolt on Hispano Suiza J-12.
Material: 4140 Steel, heat treat grade 8
Finish: Natural
Thread: M10-1.50
Thread length: 20mm
Hex: 14mm
OAL: 51mm
Length under head: 44mm
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