ASTM A194 Gr 4 Hex Bolts

ASTM A194 Gr 4 Hex Bolts are high-strength fasteners manufactured from alloy steel and designed for use in high-pressure and high-temperature bolting applications. These bolts are widely used in chemical plants, refineries, power generation units, boilers, and heat-exchanger assemblies due to their excellent mechanical strength and corrosion resistance. Zeron Fasteners provides precision-engineered ASTM A194 Grade 4 Hex Bolts that ensure secure tightening, stable performance, and long-term reliability. Our bolts meet international standards and are suitable for demanding environments where durability, load-bearing capacity, and consistent performance are essential.

Related Products

ASTM A194 Gr 4 Nuts ASTM A194 Gr 4 Stud Bolts ASTM A194 Screws ASTM A194 Alloy Steel Screws ASTM A194 Gr 4 Washers

ASTM A194 Gr 4 Hex Bolts Chemical Composition

Element Composition (%)
Carbon (C) 0.40 – 0.50
Manganese (Mn) 0.60 – 0.90
Phosphorus (P) 0.040 max
Sulfur (S) 0.050 max
Silicon (Si) 0.15 – 0.30
Chromium (Cr) 0.80 – 1.10
Molybdenum (Mo) 0.15 – 0.25

ASTM A194 Gr 4 Hex Bolts Mechanical Properties

Mechanical Property Value
Tensile Strength 760 MPa min
Yield Strength 600 MPa min
Elongation 16% min
Hardness 248 – 341 HB

ASTM A194 Gr 4 Hex Bolts Feature Products

High Strength Alloy Steel Bolts

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