Stainless Steel Hex Socket Head Machine Screws

Made from stainless steel (304,316), these screws have good chemical resistance and may be mildly magnetic. 

Black-oxide stainless steel screws have a matte-black finish. Chrome-plated stainless steel screws have a decorative, mirror-like finish.

Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.

Screws that meet ISO 21269 and ISO 4762 (formerly DIN 912) comply with specifications for dimensional standards.