Wire Rope Clip (U-Bolt Type), Galvanized
Wire Rope Clip (U-Bolt Type), Galvanized
A galvanized wire rope clip (U-bolt rope clamp) for marine wire rope end termination, lashing and mooring applications. Manufactured to GB/T 5976-2006andDIN 741, with a drop-forged steel saddle, hardened U-bolt and lock nuts, hot-dip galvanized for corrosion resistance. Suitable for wire rope diameters from 6 mm to 60 mm, reusable with simple hand tooling, and available with full material certificates for third-party inspection.
What Is a Wire Rope Clip?
Awire rope clip (also called a U-bolt clamp or rope clamp) forms a secure eye or loop at the end of a wire rope, or joins two wire rope ends, by clamping the rope between a saddle and a U-bolt under two lock nuts. It consists of three parts: a forged steel saddle, a threaded U-bolt and two nuts. When correctly installed, the U-bolt sits on the dead (short) end and the saddle carries the loaded side, transmitting load by friction between the rope and the clip. Correctly installed U-bolt rope clips reach about 80% of the wire rope breaking strength (per industry practice).
Marine Applications
Note: application data below is based on typical industry practice for marine rigging using conforming hardware.
| Application | Function |
|---|---|
| Wire rope eye termination | Form permanent eyes on rigging, lifting falls and stays |
| Lashing & cargo securing | Lock lashing wires on deck cargo |
| Mooring line end fixing | Secure mooring wire ends to bitts and bollards |
| Davits & block falls | Terminate davit and block-and-tackle falls |
| Gangway & ladder rigging | Fix guard and suspension ropes during rigging |
Specifications & Materials
| Parameter | Range | Standard Reference |
|---|---|---|
| Wire rope diameter | 6 – 60 mm | GB/T 5976-2006 |
| U-bolt thread | M6 – M36 | GB/T 5976-2006 / GB/T 41-2000 |
| Saddle material | Q235B / Q345B or malleable cast iron | GB/T 5976-2006 |
| U-bolt material | 45# / 40Cr, quenched & tempered | GB/T 5976-2006 |
| Surface treatment | Hot-dip galvanized | ASTM A123 / GLZ (per industry practice) |
| Min. clips per termination | 3 – 7 by rope size (≤18mm:3 / ≤26mm:4 / ≤36mm:5 / ≤44mm:6 / ≤60mm:7) | GB/T 5976-2006, Annex A |
| Termination efficiency | ≈80% of rope breaking strength | per industry practice |
| Clamping | Friction-type; not for hoisting loads | GB/T 5976-2006 |
Why Choose sinofastener for Wire Rope Clips?
Compliant manufacturing: clips produced to GB/T 5976 and DIN 741 with certified, traceable materials.
Durable protection: hot-dip galvanized finish resist corrosion in splash-zone and wet rigging environments.
Full range: rope sizes from 6 mm to 60 mm, with matching shackles, turnbuckles and hooks for a complete rigging kit.
Third-party inspection: material certificates available and products can be supplied for independent verification.
Standards Reference
- GB/T 5976-2006 — Steel Wire Rope Clips
- DIN 741 — Wire rope clips (legacy designation commonly referenced)
- EN 13411-5 — Terminations for steel wire rope slings (current European family)
- GB/T 41-2000 — Hexagon nuts, product grades C
- ASTM A123 / A153 — Zinc (hot-dip) coatings on steel hardware
FAQ
How many wire rope clips are needed for one termination?
Per GB/T 5976-2006 Annex A: 3 clips for rope up to 18 mm, 4 for 18-26 mm, 5 for 26-36 mm, 6 for 36-44 mm, and 7 for 44-60 mm. Spacing between clips is about 6-7 times the rope diameter.
How should a wire rope clip be installed?
Place the U-bolt on the dead (short) end and the saddle on the live loaded side. Tighten the nuts to the recommended torque, apply a first test load, then re-tighten. Do not reverse the clip, as this can cause the rope to slip through the saddle under load.
Can wire rope clips be reused?
GB/T 5976 recommends that removed clips be replaced rather than reused, and that remaining clips be re-tightened during periodic inspection. Inspect bolts for thread damage, deformation and the saddle for cracks before each use.
Can wire rope clips be used for lifting loads?
U-bolt rope clips are friction-type terminations intended for lashing, securing and guying. They are not suitable for overhead lifting of personnel or critical hoisting loads; use rated forged terminations for lifting applications.
Contact Us
Email: sales@sinofastener.com | bobo@sinofastener.com
Tel: 0574-86592068
Website: www.zlfastener.com | www.sinofastener.com (Main)
