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AISI 4140 Fasteners

Boltport Fasteners offers high tensile alloy steel AISI 4140 Fasteners including bolts, screws, stud bolts, threaded rods, nuts and washers. AISI 4140 is high strength chromium-molybdenum alloy steel grade used for manufacturing A193 B7, B7M, A320 L7, L7M fasteners for low temperature bolting applications. We majorly produce fully threaded stud bolts, double end studs, hex head bolts, heavy hex bolts, eye bolts and anchor bolts in AISI 4140 alloy steel.

AISI 4140 Alloy Steel

Alloy steel 4140 fasteners are formed using cold forging techniques, however big size fasteners or small quantities of 4140 bolts are produced by hot forging or directly machined from 4140 bar stock. All 4140 fasteners are marked with "BPF" mark followed by corresponding specification or grade symbol.

AISI 4140 Technical Data Sheet

AISI 4140 Fasteners

  • AISI 4140 Bolts
    Bolts
  • AISI 4140 Screws
    Screws
  • AISI 4140 Stud Bolts
    Stud Bolts
  • AISI 4140 Threaded Rods
    Threaded Rods
  • AISI 4140 Nuts
    Nuts
  • AISI 4140 Washers
    Washers
  • AISI 4140 Springs
    Springs
  • AISI 4140 Pins
    Pins
  • AISI 4140 Accessories
    Accessories
  • AISI 4140 Components
    Components

AISI 4140 Equivalent Grades

xxx xxx xxx xxx
42CrMo4 UNS G41400 DIN 1.7225 JIS SCM440

AISI 4140 Properties

AISI 4140 Chemical Composition

Carbon Manganese Sulphur Phosphorus Silicon Molybdenum Chromium
0.38 - 0.43 % 0.75 - 1.00 % 0.04 % max 0.035 % max 0.15 - 0.30 % 0.15 - 0.25 % 0.80 - 1.10 %

AISI 4140 Mechanical Properties

Tensile Strength Yield Strength Hardness, Rockwell Hardness, Brinell
655 MPa (Min.) 415 MPa (Min.) 25 - 70 197 (Min.)

AISI 4140 Fastener Specifications

Grades Description Additional Details
ASTM A193 xxx More Information »
ASTM A194 xxx More Information »
ASTM A320 xxx More Information »
ASTM F568 xxx More Information »
ISO 898-1 xxx More Information »