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Regular shoulder eye bolts, inch (drop forged), 1/4 to 1 in: eye, shoulder, overall and thread length (dimensions only)
What are the eye diameter, shoulder diameter and thread length of a 1/2 in shoulder eye bolt? · Standard part · basis: One maker's regular-shoulder drop-forged eye bolt catalogue sheet (30 size × shank rows); dimensions only, no load values
Also called: shoulder eye bolt dimensions, 1/2 shoulder eye bolt eye diameter, 3/8 eye bolt thread length, 5/16 shoulder eye bolt dimensions, forged eye bolt size chart, 1/4 eye bolt inside eye diameter, regular shoulder eye bolt dimensions
Exact dimensions. True size, with no tolerance added.
- sizes
- 30 in table
Notes
- Rows are the Chicago Hardware regular-shoulder pattern as printed: nominal thread size × shank length, outside eye C, inside eye D, overall length E, outside shoulder F, shoulder thickness G and thread length T (inches). Each size has one set of eye and shoulder dimensions, with several shank lengths; the thread length is per row. The sheet's 7/8 x 5 thread length prints as 2-12 followed by an inch mark and reads as 2-1/2 in against the neighbouring rows.
- Working load limits, weights and part numbers are left out on purpose: a lifting figure should come from the marking on the eye bolt, not from a dimension page. The sheet names an ASME standard for its requirements but the number is not legible in the text read, so no standard is cited for these dimensions.
- These are one maker's dimensions; other makers' shoulder eye bolts differ in eye size and shoulder. The sheet notes special shank and thread lengths are available.
- Not published as numbers: the eye cross-section, the neck blending eye to shoulder, thread form. No file is drawn. McMaster-Carr sells forged lifting eyebolts, inch and metric, with per-part STEP; its category is linked, not copied. Metric DIN 580: eye-bolts-din-580.
Regular shoulder eye bolts, inch (drop forged), 1/4 to 1 in: eye… size chart
| size × shank length | outside eye C | inside eye D | overall length E | outside shoulder F | shoulder thickness G | thread length T |
|---|---|---|---|---|---|---|
| 1/4" x 2 | 1" | 1/2" | 3-1/8" | 7/16" | 5/64" | 1-1/2" |
| 1/4" x 3 | 1" | 1/2" | 4-1/8" | 7/16" | 5/64" | 1-1/2" |
| 1/4" x 4 | 1" | 1/2" | 5-1/8" | 7/16" | 5/64" | 2" |
| 5/16" x 2-1/4 | 1-1/4" | 5/8" | 3-5/8" | 9/16" | 3/32" | 1-1/2" |
| 5/16" x 3-1/4 | 1-1/4" | 5/8" | 4-5/8" | 9/16" | 3/32" | 1-1/2" |
| 5/16" x 4-1/4 | 1-1/4" | 5/8" | 5-5/8" | 9/16" | 3/32" | 2-1/2" |
| 3/8" x 2-1/2 | 1-1/2" | 3/4" | 4-1/4" | 11/16" | 1/8" | 1-1/2" |
| 3/8" x 3 | 1-1/2" | 3/4" | 4-3/4" | 11/16" | 1/8" | 1-1/2" |
| 3/8" x 4-1/2 | 1-1/2" | 3/4" | 6-1/4" | 11/16" | 1/8" | 2" |
| 3/8" x 5 | 1-1/2" | 3/4" | 6-3/4" | 11/16" | 1/8" | 2-1/2" |
| 3/8" x 6 | 1-1/2" | 3/4" | 7-3/4" | 11/16" | 1/8" | 3" |
| 3/8" x 8 | 1-1/2" | 3/4" | 9-3/4" | 11/16" | 1/8" | 4" |
| 1/2" x 2 | 2" | 1" | 4-5/16" | 7/8" | 5/32" | 1-7/8" |
| 1/2" x 3-1/4 | 2" | 1" | 5-1/2" | 7/8" | 5/32" | 1-1/2" |
| 1/2" x 4-1/2 | 2" | 1" | 6-3/4" | 7/8" | 5/32" | 2" |
| 1/2" x 6 | 2" | 1" | 8-1/4" | 7/8" | 5/32" | 3" |
| 1/2" x 8 | 2" | 1" | 10-1/4" | 7/8" | 5/32" | 4" |
| 1/2" x 10 | 2" | 1" | 12-1/4" | 7/8" | 5/32" | 4" |
| 1/2" x 12 | 2" | 1" | 14-1/4" | 7/8" | 5/32" | 4" |
| 5/8" x 4-1/2 | 2-5/16" | 1-1/4" | 7-1/4" | 1-1/8" | 13/64" | 2" |
| 5/8" x 6 | 2-5/16" | 1-1/4" | 8-9/16" | 1-1/8" | 13/64" | 3" |
| 5/8" x 8 | 2-5/16" | 1-1/4" | 10-9/16" | 1-1/8" | 13/64" | 4" |
| 5/8" x 10 | 2-5/16" | 1-1/4" | 12-9/16" | 1-1/8" | 13/64" | 4" |
| 5/8" x 12 | 2-5/16" | 1-1/4" | 14-9/16" | 1-1/8" | 13/64" | 4" |
| 3/4" x 4-1/2 | 2-3/4" | 1-1/2" | 7-3/4" | 1-3/8" | 1/4" | 2-1/2" |
| 3/4" x 6 | 2-3/4" | 1-1/2" | 9-1/8" | 1-3/8" | 1/4" | 3" |
| 7/8" x 5 | 3-1/2" | 1-3/4" | 9-1/4" | 1-1/2" | 9/32" | 2-1/2" (printed "2-12"") |
| 7/8" x 8 | 3-1/2" | 1-3/4" | 12-1/8" | 1-1/2" | 9/32" | 4" |
| 1" x 6 | 3-3/4" | 2" | 10-1/2" | 1-3/4" | 5/16" | 3" |
| 1" x 9 | 3-3/4" | 2" | 13-1/4" | 1-3/4" | 5/16" | 4" |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Chicago Hardware (via BigCommerce) | Regular shoulder drop-forged eye bolts, 1/4 to 1 in: outside eye C, inside eye D, overall length E, outside shoulder F, shoulder thickness G, thread length T | web | Maker catalogue sheet; numbers only |
| McMaster-Carr | Galvanized eyebolts (for lifting) (free STEP/IGES per part, for your own design use; no redistribution) | STEP, IGES, PDF | McMaster-Carr site terms: personal design use, no redistribution verify |
| McMaster-Carr | DIN 580 eyebolts (free STEP/IGES per part, for your own design use; no redistribution) | STEP, IGES, PDF | McMaster-Carr site terms: personal design use, no redistribution verify |
Xem scan
File coming
No downloadable true-size file yet: the published figures do not fix the whole shape, and Xem never guesses a number. A measured scan is planned; request it and it moves up.
https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.Plain text: sheet.txt · JSON: /api/geometry?object=shoulder-eye-bolts-inch
Fits with
Questions
What is the inside eye of a 1/2 in shoulder eye bolt?
1 in inside eye (D), 2 in outside eye (C), 7/8 in outside shoulder (F) in the Chicago Hardware regular-shoulder sheet.
How long is the thread on a 3/8 x 3 shoulder eye bolt?
1-1/2 in on that sheet; overall length 4-3/4 in.
What is the shoulder thickness on a 1/4 in eye bolt?
5/64 in on the Chicago Hardware sheet (outside shoulder 7/16 in).