5PC ZoroSelect Shoulder Screw 5/16 X1/4 1/4-20 Thread Length: 7/8 in

5PC ZoroSelect Shoulder Screw 5/16 X1/4 1/4-20 Thread Length: 7/8 in Shoulder Screw Tamperproof 18-8 Stainless Steel Head Style Truss System of Measurement Inch Thread Size 1/4-20 6-Lobe with Pin Drive Type Drive Size T27 Shoulder Dia. 5/16 in Shoulder Length 1/4 in Thread Length 7/8 in Head Dia. 9/16 in Head Height 1/4 in Shoulder Length Tolerance 1/4 in Min. Tensile Strength (PSI) 80 000 psi Rockwell Hardness B85 to B95