Socket Head Cap Screw Fine & Full Thread Black Steel 12-28 * 1/2″ Grade 8 [Cup Point] [Allen Drive] Supply

With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.

Black-oxide steel screws are mildly corrosion resistant in dry environments.

Coarse threads are the industry standard: choose these screws if you don’t know the pitch or threads per inch.

Screws that meet ASTM A574, ASTM A574M, and ISO 898-1 comply with specifications and testing requirements for material quality.