Grade 8 UNC (Coarse Thread) Hex Cap Screws, 1/4-20 x 1/2" to 1 1/4-7 x 10", medium carbon alloy, yellow zinc plate, 150,000 psi, C 33-39.

Grade 8 UNF (Fine Thread) Hex Cap Screws, 1/4-28 x 1/2" to 1-14 x 7 1/2", medium carbon alloy, yellow zinc plate, 150,000 psi, C 33-39.

Grade 8 UNC (Coarse Thread) Hex Cap Screws, 1/4-20 x 1/2" to 1 1/4-7 x 10", medium carbon alloy, plain finish, 150,000 psi, C 33-39.

Grade 8 UNF (Fine Thread) Hex Cap Screws, 1/4-28 x 1/2" to 1-14 x 10", medium carbon alloy, plain finish, 150,000 psi, C 33-39.