SS 321 Socket Head Cap Screws

SS 321 Socket Head Cap Screws are precision-engineered fasteners made from stabilized austenitic stainless steel, designed to withstand elevated temperatures and corrosive conditions. These screws feature a cylindrical head with an internal hex drive, allowing easy installation with a hex key in tight or recessed spaces. Known for their excellent resistance to oxidation and scaling up to 870°C, SS 321 Socket Head Cap Screws are widely used in exhaust manifolds, chemical processing, thermal plants, and aerospace structures. Zeron Fasteners supplies high-quality SS 321 Socket Head Cap Screws that combine strength, durability, and precision for dependable fastening performance across critical industrial environments.

Related Products

SS 321 Socket Head Cap Screws Chemical Composition

Element Composition (%)
Carbon (C) 0.08 max
Chromium (Cr) 17.0 - 19.0
Nickel (Ni) 9.0 - 12.0
Manganese (Mn) 2.0 max
Silicon (Si) 1.0 max
Phosphorus (P) 0.045 max
Sulfur (S) 0.03 max
Titanium (Ti) 5 x C min, 0.70 max
Iron (Fe) Balance

SS 321 Socket Head Cap Screws Mechanical Properties

Mechanical Property Value
Tensile Strength 515 MPa min
Yield Strength (0.2% offset) 205 MPa min
Elongation 40% min
Hardness (Brinell) 217 HB max
Melting Range 1400 - 1425°C

SS 321 Socket Head Cap Screws Feature Products