7/16" UNF Seatbelt Eyebolt — 32mm Thread Length

A 7/16" UNF seatbelt eyebolt for harness and seatbelt mounting point applications on race cars, rally cars, and track vehicles. The 7/16" UNF thread is the standard harness eyebolt thread used on roll cages, harness bars, and chassis mounting points built to FIA and MSA specifications. The eyebolt provides a secure looped attachment point for seatbelt or harness webbing anchors.

Key Specifications

• Thread: 7/16" UNF (Unified National Fine)
• Thread Length: 32mm
• Type: Seatbelt / harness eyebolt
• Application: Roll cage, harness bar, and chassis harness anchor mounting points

7/16" UNF — The Motorsport Standard

The 7/16" UNF thread is the industry-standard thread for harness eyebolts in motorsport. Roll cages and harness bars built to FIA and MSA regulations are typically tapped to 7/16" UNF to accept this eyebolt. If your roll cage or harness bar has pre-tapped harness mounting points, this is almost certainly the thread you need. For metric M10 mounting points, see our M10 Seatbelt Eyebolt instead.

Safety Notice

Seatbelt and harness mounting points are safety-critical components. Always ensure eyebolts are installed into a structurally sound mounting point with adequate thread engagement. Harness installation should comply with the relevant motorsport regulations (MSA, FIA, or series-specific rules) and be inspected by a qualified person. Never use damaged, corroded, or incorrectly installed eyebolts for harness mounting. If in doubt, consult a qualified roll cage builder or motorsport engineer.

Fitment & Compatibility

7/16" UNF thread. Ensure the mounting point provides sufficient thread engagement for the 32mm thread length. Suitable for use with standard harness anchor hardware. Always verify thread size and engagement against your chassis or roll cage mounting point before installation.

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