---
publication_id: "OT-2026-000000065"
title: "Captive Wedge Pin for a Quick Release Clamp"
published_at: "2026-09-15T19:02:01.410079Z"
canonical_url: "https://opentechnical.org/p/OT-2026-000000065"
categories:
  - "tools-tooling"
keywords:
  - "clamp"
  - "wedge"
  - "pin"
---

# Captive Wedge Pin for a Quick Release Clamp

## Abstract

A quick release clamp is fitted with a wedge pin retained by a circlip in a blind groove, so the pin cannot be dropped or fitted the wrong way round during a tool change.

## 1. Description

## 2. Description

[0001] The pin (12) is turned with a shallow groove near its head and retained by a circlip (14) seated in a blind bore in the clamp body (10). The groove is offset from the centre so the pin will only seat fully in one orientation.

## 3. Variations

[0002] The circlip may be replaced by a spring plunger where the clamp is opened often.