Product and application brief
An eye nut combines a ring-shaped connection eye with a body containing an internal female thread. It connects to a specified externally threaded stud or bolt, unlike an eye bolt with its own male shank. Eye opening and thread bore are separate features. Identify the exact construction and mating connection before treating an eye-shaped part as a lifting component or a substitute for another model.
Product forms and reference names
| Product form / field | Reference and distinguishing details |
|---|---|
| DIN 582 lifting-eye-nut reference | DIN Media identifies DIN 582:2024-05 as Lifting eye nuts, replacing the 2018-04 edition. State the required edition and product specification. A catalogue reference does not prove that the illustrated or requested part conforms. |
| Maker-specific tapped eye nuts | Crosby's catalogue identifies G-400 eye nuts and mentions M-400 metric threading. These are manufacturer model names, not universal DIN aliases. Specify the actual thread and selected drawing rather than inferring equivalence from the ring shape. |
| Blank or unfinished bodies | Jergens identifies its 18900 eye-nut blank separately from tapped catalogue entries; Crosby also lists an as-forged blank reference. A blank is not a finished threaded nut. Any machining requirement needs a controlled drawing and subsequent product documentation. |
Female thread and mating stud
Specify thread form, diameter, pitch or threads per inch and required class. State the useful internal threaded depth and whether the specified body uses a through or blind bore. The mating stud projection and seating surface belong to the assembly drawing; this page does not prescribe a universal engagement length or tighten-to value.
Eye opening, body and seating dimensions
Keep inside eye dimensions, ring-section dimensions, body/base size and overall height separate from thread diameter. Include connector clearance and any orientation requirement. Two parts with the same female thread can still differ in eye opening, seating geometry or overall envelope.
Fixed eye is not a swivel connection
A fixed eye nut and a designed swivel or pivoting point have different constructions. Their similar purpose or silhouette does not establish interchangeable mounting or permitted motion. Select the actual model and its documented use rather than assuming rotation or angular lifting is allowed.
Standard identity is separate from lifting evidence
The official DIN 582 entry concerns steel and stainless-steel lifting eye nuts. Its full normative dimensions and tolerances are not reproduced here. Actual material, manufacturing, marking and test documentation remain product-specific. No working load limit, pull direction, installation torque, temperature range or reuse guarantee is assigned by this identification page.
Specification fields
| Product form / field | Reference and distinguishing details |
|---|---|
| Exact reference | Required standard and edition, maker model, or controlled drawing with revision; identify finished tapped part versus blank. |
| Internal thread | Form, nominal diameter, pitch or threads per inch, required class and useful depth; specify bore construction from the drawing. |
| Body and seating geometry | Base/body dimensions, overall height, seating face and any required interface datums. |
| Eye and connector geometry | Inner opening and ring-section dimensions, connector clearance and specified orientation. |
| Mating connection and use | Stud or bolt specification, projection and mounting drawing; separately state lifting-document requirements if applicable. |
| Material, finish and quantity | Requested material designation, finish, quantity in pieces and required documents; identify any unresolved interface requirements. |
Common product questions
How does an eye nut differ from an eye bolt?
The eye nut contains a female thread for a mating stud or bolt. An eye bolt has its own male threaded shank. Their mounting arrangements are different.
Is an eye-nut blank ready for the same use as a tapped part?
No. An unfinished blank does not provide the finished specified thread. Machining and final product requirements must be defined separately.
Can identical thread sizes prove interchangeable lifting performance?
No. Thread matching alone does not establish geometry, material, mounting suitability, allowed directions or an actual product rating.
Related specification resources
Product references
References checked 6 October 2026 explain product identity. Third-party model names and approvals are not FastenerBridge brand affiliation, stock or certification claims. Final geometry and requirements follow the selected specification.