The Socket Head Cap Screws have a hardness range of RC 37-45 or RC 39-45, and are made from ASTM A574 alloy steel. They conform to ANSI / ASME B18.3 dimensions (thread class 3A) and have a tensile strength of either 170,000 P.S.I. or 180,000 P.S.I. Various sizes of hex keys are required for these screws, including 1/2" (K-M No. 83-601), 1/4" (K-M No. 83-628), 1" (K-M No. 83-606), 3/16" (K-M No. 83-626), 3/32" (K-M No. 83-622), 3/4" (K-M No. 83-604), 3/8" (K-M No. 83-630), 5/16" (K-M No. 83-629), 5/32" (K-M No. 83-625), 5/8" (K-M No. 83-603), 7/64" (K-M No. 83-616), 7/8" (K-M No. 83-605), and 9/64" (K-M No. 83-624).

The Socket Head Cap Screw has a hardness of RC 39-45, is made from ASTM A574 alloy steel, and conforms to ANSI / ASME B18.3 dimensions (thread class 3A). It boasts a tensile strength of 180,000 P.S.I. Various sizes of hex keys are required for this screw: a 1/2" hex key (K-M No. 83-601), a 1/4" hex key (K-M No. 83-628), a 3/16" hex key (K-M No. 83-626), a 3/8" hex key (K-M No. 83-630), a 5/16" hex key (K-M No. 83-629), a 5/32" hex key (K-M No. 83-625), and a 5/8" hex key (K-M No. 83-603).

All Socket Head Cap Screws are made of alloy steel with a tensile strength of 180,000 P.S.I., feature a black oil-dipped finish, conform to ASA 1960 series specifications, and meet ANSI B18.3 standards. Each screw requires a specific hex key: the 1/2" hex key (K-M No. 83-601), 1/4" hex key (K-M No. 83-628), 3/16" hex key (K-M No. 83-626), 3/32" hex key (K-M No. 83-622), 3/4" hex key (K-M No. 83-604), 3/8" hex key (K-M No. 83-630), 5/16" hex key (K-M No. 83-629), 5/32" hex key (K-M No. 83-625), 5/8" hex key (K-M No. 83-603), 7/64" hex key (K-M No. 83-616), and 9/64" hex key (K-M No. 83-624).

All Socket Head Cap Screws are made of alloy steel with a tensile strength of 180,000 P.S.I., feature a black oil-dipped finish, conform to ASA 1960 series specifications, and meet ANSI B18.3 standards. Each screw requires a specific hex key: the 1/2" hex key (K-M No. 83-601), the 1/4" hex key (K-M No. 83-628), the 3/16" hex key (K-M No. 83-626), the 3/8" hex key (K-M No. 83-630), the 5/16" hex key (K-M No. 83-629), the 5/32" hex key (K-M No. 83-625), the 7/64" hex key (K-M No. 83-616), and the 9/64" hex key (K-M No. 83-624).

Zinc Plated, Alloy steel - 180,000 P.S.I., conforming to ASA 1960 series specifications and ANSI B18.3, ASTM A574. Plated to ASTMB6333 for increased corrosion resistance. Superior appearance for motorcycle, automotive, and truck applications. Hex Key sizes include 1/2", 1/4", 3/16", 3/8", 5/16", 5/32", 5/8", 7/64", and 9/64".

Zinc Plated, Alloy steel - 180,000 P.S.I., ASA 1960 series specifications, conforms to ANSI B18.3, ASTM A574, plated to ASTMB6333. Increased corrosion resistance and superior appearance for motorcycle, automotive, and truck applications. Uses 1/4", 3/16", 5/16", and 5/32" Hex Keys.

The product is made from 18-8 stainless steel, which is corrosion resistant and can withstand chemicals and outdoor environments. It is ideal for applications in food processing facilities, marine use, and chemical processing, particularly in environments where corrosion is a concern.

Made from 18-8 stainless steel.

Made from 316 stainless steel.