---
title: "What Are Pin-and-Collar Lockbolt Assemblies Used For?"
description: "Pin-and-Collar Lockbolt Assemblies (Trade series (pin-and-collar lockbolt)) are used for grip-range lockbolt fastening in vibration-exposed frames and bodywo…"
url: https://engineeringhardware.com/applications/pin-and-collar-lockbolt-assemblies/
source: Engineering Hardware & Fasteners
---

# What Are Pin-and-Collar Lockbolt Assemblies Used For?

Rivets · Trade series (pin-and-collar lockbolt) · Application guide

Typical applications, the industries that specify pin-and-collar lockbolt assemblies, and how to choose the right size, material and finish for the joint.

Pin-and-Collar Lockbolt Assemblies are used for grip-range lockbolt fastening in vibration-exposed frames and bodywork. They are manufactured to Trade series (pin-and-collar lockbolt), and selection is driven by the screw size, the fit and tolerance the assembly requires, and the service environment.

- **Primary duty:** Grip-range lockbolt fastening in vibration-exposed frames and bodywork
- **Governing standard:** Trade series (pin-and-collar lockbolt)
- **Screw size range:** 1/4 to 5/16
- **Category:** Rivets

Application notes are general engineering guidance. Verify the property class and any approval requirement against your own design calculation.

![What Are Pin-and-Collar Lockbolt Assemblies Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/Huck-Magna-Grip-Lockbolt-Assembly.webp)

Application guide for Pin-and-Collar Lockbolt Assemblies to Trade series (pin-and-collar lockbolt). The core duty of the type is grip-range lockbolt fastening in vibration-exposed frames and bodywork. The typical industries, the how-to-specify checklist, assembly practice and the exclusion cases are set out below. Stocked across roughly 1 to 5, they cover light-duty and instrument-scale work.

## Typical Applications for Pin-and-Collar Lockbolt Assemblies

The most common settings where these are specified:

- **Truck and trailer assembly:** grip-range lockbolts in chassis and body structures.
- **Agricultural equipment:** permanent frame joints exposed to field vibration.
- **Rail and transit:** one-side fastening of structural skins and support members.
- **Off-highway equipment:** button-head joints exposed to shock and cyclic service.

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## How to Specify Pin-and-Collar Lockbolt Assemblies for Your Application

- **Size:** Select on screw size, and confirm it against the mating feature in the assembly. This product spans 1–5; check the full table below for the exact dimensions of each size.
- **Material:** Choose the material and finish for the service environment — plated steel for general use, stainless for corrosion resistance.
- **Environment:** For damp, coastal or chemical exposure prefer A4/316 stainless or a suitable coating; indoors, plated steel or A2 is usually sufficient.
- **Standard:** This product is supplied to Trade series (pin-and-collar lockbolt). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

## Installation & Assembly Practice

- Drill the hole 0.1 mm over the nominal rivet diameter and deburr both sides before setting.
- Grip range must match the total joint thickness — a rivet set outside its grip range clamps poorly and works loose.

## Common Selection Mistakes with Pin-and-Collar Lockbolt Assemblies

- Setting a rivet outside its grip range, which leaves the joint loose from day one.
- Using aluminum rivets on steel sheet outdoors — galvanic corrosion eats the rivet.

## Where Pin-and-Collar Lockbolt Assemblies Are Not the Right Choice

Not where the joint must later be disassembled, and not for high-tension structural connections.

Custom manufacturing · Made to drawing

## Need a pin-and-collar lockbolt assemblies outside the standard range?

Body diameter, grip range, head form and body/mandrel material combination can all be specified against the joint rather than chosen from a table. Made by cold heading or drawing.

Minimum order from 2,000 pieces; samples within 7 days of drawing approval.

[Custom rivet manufacturing](https://engineeringhardware.com/custom/rivets/)[Send a drawing](https://engineeringhardware.com/custom/rivets/#rfq)

## Technical Drawing

Dimensioned line drawing of 3/16 Pin-and-Collar Lockbolt Assemblies to Trade series (pin-and-collar lockbolt). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Grip ranges (in):** 0.062~0.625 / 0.312~1.250
- **Pin material:** carbon steel or 7075-T6 aluminum
- **Collar material:** carbon steel or 6061 aluminum
- **Collar styles:** standard / medium-flange / wide-flange
- **Head style:** button head

## Dimensions & Specifications (Trade series (pin-and-collar lockbolt))

| Nominal diameter (in) | Grip ranges (in) | Pin material | Collar material | Collar styles | Head style |
| --- | --- | --- | --- | --- | --- |
| 3/16 | 0.062~0.625 / 0.312~1.250 | carbon steel or 7075-T6 aluminum | carbon steel or 6061 aluminum | standard / medium-flange / wide-flange | button head |
| 1/4 | 0.062~0.625 / 0.312~1.250 | carbon steel or 7075-T6 aluminum | carbon steel or 6061 aluminum | standard / medium-flange / wide-flange | button head |
| 5/16 | 0.125~0.750 / 0.625~1.375 | carbon steel or 7075-T6 aluminum | carbon steel or 6061 aluminum | standard / medium-flange / wide-flange | button head |
| 3/8 | 0.125~0.875 / 0.812~1.625 | carbon steel or 7075-T6 aluminum | carbon steel or 6061 aluminum | standard / medium-flange / wide-flange | button head |

Inside the plant

## Manufactured in our own plant

This part is cold-formed, threaded, heat-treated and finished in-house. The stages below are where its class and finish are actually decided.

1. ![Wire rod feeding into a cold heading machine](https://engineeringhardware.com/wp-content/uploads/2026/08/09-wire-rod-feed-cold-heading-machine.webp) 01 **Cold heading** Wire rod is drawn to size and cold-formed into blanks. Forming rather than cutting keeps the grain flow continuous around the head, which is where a bolt is most likely to fail. Head dimensions and under-head radius checked at set-up and per shift.
2. ![Thread rolling machine producing bolt threads](https://engineeringhardware.com/wp-content/uploads/2026/08/03-thread-rolling-machine-bolt-production.webp) 02 **Thread rolling** Threads are rolled between hardened dies rather than cut. Rolled threads are stronger in fatigue than cut threads and hold pitch and flank angle far more consistently across a batch. Go / no-go ring gauges to ISO 965 tolerance class 6g.
3. ![Baskets of bolts staged for heat treatment](https://engineeringhardware.com/wp-content/uploads/2026/08/05-heat-treatment-baskets-black-bolts.webp) 03 **Heat treatment** Quench-and-temper brings carbon and alloy steel to the property class ordered — 8.8, 10.9 or 12.9 — with the furnace charge tracked so a finished lot can be traced back to it. Core hardness and tensile tested per lot to ISO 898-1.
4. ![Zinc plated bolts in a treatment basket](https://engineeringhardware.com/wp-content/uploads/2026/08/23-zinc-plated-bolts-treatment-basket.webp) 04 **Surface treatment** Zinc, zinc-nickel, hot-dip galvanizing, black oxide, phosphate and Dacromet, selected against the service environment rather than against the price list. Coating thickness and neutral salt spray hours to ISO 9227.

## Frequently Asked Questions

### What material should Pin-and-Collar Lockbolt Assemblies be for outdoor use?

For damp, coastal or chemical environments specify A4 (316) stainless or a suitably coated steel. For indoor or dry use, A2 (304) stainless or zinc-plated steel is normally adequate.

### Are Pin-and-Collar Lockbolt Assemblies made to a recognized standard?

Yes — they are manufactured to Trade series (pin-and-collar lockbolt), so dimensions are interchangeable between suppliers when you quote the standard on your order.

### What are Pin-and-Collar Lockbolt Assemblies used for?

Grip-range lockbolt fastening in vibration-exposed frames and bodywork. They are supplied to Trade series (pin-and-collar lockbolt).

### Which industries use Pin-and-Collar Lockbolt Assemblies?

They are commonly specified in truck and trailer assembly, agricultural equipment and rail and transit, among other sectors.

### Can I get a quote for Pin-and-Collar Lockbolt Assemblies in the size and material I need?

Yes. Use the technical drawing and quote form on this page to set the size and options, then send the exact configuration to our team for pricing and lead time.

## Related Pages

Product page: [Pin-and-Collar Lockbolt Assemblies — specifications & sizes](https://engineeringhardware.com/fastener/pin-and-collar-lockbolt-assemblies/)

### Pin-and-Collar Lockbolt Assemblies Specification Guides

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