SS 420 Nut

SS 420 Nut is a crucial component in high-performance bolting assemblies, designed to complement SS 420 Stud Bolts (A193 B6). Manufactured from Martensitic Stainless Steel Grade 420, these nuts are valued for their exceptional hardness and robust mechanical properties after appropriate heat treatment. They offer excellent wear resistance and reliable locking capabilities, preventing loosening in critical joints. Zeron Fastners is a trusted manufacturer and supplier of Stainless Steel 420 Nuts in India, strictly adhering to standards such as ASTM A194 Grade 6. These nuts are commonly deployed in the petrochemical industry, power generation facilities, and general engineering where high joint integrity and moderate corrosion resistance are required.

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SS 420 Nuts Manufacturer in India

SS 420 Nut Chemical Composition

Chemical Composition (ASTM A194 Grade 6 or SS 420)
Carbon (C) 0.15% min
Manganese (Mn) 1.00% max
Phosphorus (P) 0.040% max
Sulfur (S) 0.030% max
Silicon (Si) 1.00% max
Chromium (Cr) 12.0 – 14.0%

SS 420 Nut Mechanical Properties

Mechanical Properties (ASTM A194 Grade 6 or SS 420)
Proof Load Stress, min 1035 MPa
Hardness (Brinell) 200 to 320 HB
Maximum Rockwell Hardness HRC 35 Max
Yield Strength Equiv. 75 ksi Approx.

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