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Forged Eye Bolt Dimensions (Inch Series)

This calculator shows forged eye bolt dimensions for selected sizes intended primarily for lifting applications. Dimensions are based on ASME B18.15 (inch series).

Forged eye bolt types

  • Type 1 – Plain pattern (straight shank): Style A (long) and Style B (short)
  • Type 2 – Shoulder pattern: Style A (long) and Style B (short)

Notes (ASME B18.15)

  • Mechanical properties for carbon steel eye bolts are covered by ASTM A 489.
  • Alloy steel eyebolts intended for low-temperature applications are covered by ASTM F 541.
  • Threads are typically UNC Class 2A; tapped holes are generally Class 2B.
Input parameters


 
Results – Forged Eye Bolt Dimensions
Forged eye bolt dimensions and nomenclature
Parameter Symbol Value Unit
Nominal size - --- -
Eye bolt type - --- -
Eye bolt style - --- -
Thread size H --- -
Major thread diameter Amax --- in
Major thread diameter Amin ---
Shank length Bmax ---
Shank length Bmin ---
Eye internal diameter Cmax ---
Eye internal diameter Cmin ---
Nominal eye outer diameter D ---
Eye section diameter Emax ---
Eye section diameter Emin ---
Overall length Fmax ---
Overall length Fmin ---
Minimum full thread length Gmin ---
Eye to shoulder Jmax ---
Eye to shoulder Jmin ---
Shoulder diameter Kmax ---
Shoulder diameter Kmin ---
Shoulder height Lmax ---
Shoulder height Lmin ---
Radius under shoulder Rmax ---
Radius under shoulder Rmin ---

All dimensions are in inches. Shoulder-related dimensions apply to shoulder pattern eye bolts.

Supplements

References

  • ANSI / ASME B18.15 – Forged Eyebolts (Inch Series)
  • ASTM A 489 – Standard Specification for Carbon Steel Lifting Eyes
  • ASTM F 541 – Alloy Steel Threaded Eyebolts (low temperature toughness)