Catalog Stanley Supply, Inc.

Comparison : Item # FSPS4-40X025, 4-40 x 1/4" Flat Spanner Tamper Resistant Machine Screw, Stainless Steel, 100/BX, Driver Size #4
Item # FSPS4-40X037, 4-40 x 3/8" Flat Spanner Tamper Resistant Machine Screw, Stainless Steel, 100/BX, Driver Size #4
Item # FSPS4-40X050, 4-40 x 1/2" Flat Spanner Tamper Resistant Machine Screw, Stainless Steel, 100/BX, Driver Size #4