---
title: "What Are Concrete Formwork Wedge Bolts Used For?"
description: "Concrete Formwork Wedge Bolts (Trade series (formwork wedge bolts and pins)) are used for fixing steelwork, plant and services to concrete and masonry, where…"
url: https://engineeringhardware.com/applications/concrete-formwork-wedge-bolts/
source: Engineering Hardware & Fasteners
---

# What Are Concrete Formwork Wedge Bolts Used For?

Anchors & Concrete Fixings · Trade series (formwork wedge bolts and pins) · Application guide

Typical applications, the industries that specify concrete formwork wedge bolts, and how to choose the right size, material and finish for the joint.

Concrete Formwork Wedge Bolts are used for fixing steelwork, plant and services to concrete and masonry, where the anchor is set in a drilled hole and its capacity is governed by the base material rather than by the steel. They are manufactured to Trade series (formwork wedge bolts and pins), and selection is driven by the nominal diameter, the fit and tolerance the assembly requires, and the service environment.

- **Primary duty:** Fixing steelwork, plant and services to concrete and masonry, where the anchor is set in a drilled hole and its capacity is governed by the base material rather than by the steel
- **Governing standard:** Trade series (formwork wedge bolts and pins)
- **Category:** Anchors & Concrete Fixings

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

![What Are Concrete Formwork Wedge Bolts Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/Concrete-Formwork-Wedge-Bolts.webp)

Application guide for Concrete Formwork Wedge Bolts to Trade series (formwork wedge bolts and pins). The core duty of the type is fixing steelwork, plant and services to concrete and masonry, where the anchor is set in a drilled hole and its capacity is governed by the base material rather than by the steel. The typical industries, the how-to-specify checklist, assembly practice and the exclusion cases are set out below.

## Typical Applications for Concrete Formwork Wedge Bolts

The most common settings where these are specified:

- **Fabrication & metalwork:** bench and on-site assembly of steel frames, enclosures and weldments.
- **Structural fixing to concrete:** base plates, brackets, rails and steelwork bolted to a concrete slab or wall.
- **Building services:** suspending cable tray, ductwork, sprinkler pipe and unistrut from a soffit.
- **Plant & machine installation:** holding down machines, presses and conveyors on a factory floor.
- **Fit-out & drylining:** fixing to plasterboard, block and hollow wall where there is no solid backing.

Product catalog

## Related Formwork Hardware products

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## How to Specify Concrete Formwork Wedge Bolts for Your Application

- **Size:** Match the size to the mating part — see the dimension table below for each option.
- **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 (formwork wedge bolts and pins). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

## Where Concrete Formwork Wedge Bolts Are Not the Right Choice

Match the fastener to the load, environment and whether the joint must be reopened; the wrong class or style is the usual cause of joint failure.

Custom manufacturing · Made to drawing

## Need a concrete formwork wedge bolts outside the standard range?

Embedment depth, thread size, body length and corrosion protection are the variables; capacity remains a concrete design value, not a property of the anchor alone. Made by hot forging or thread rolling.

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

[Custom anchor & concrete fixing manufacturing](https://engineeringhardware.com/custom/anchors/)[Send a drawing](https://engineeringhardware.com/custom/anchors/#rfq)

## Technical Drawing

Dimensioned line drawing of panel edge rail to edge rail Concrete Formwork Wedge Bolts to Trade series (formwork wedge bolts and pins). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Closure:** wedge through a slotted pin
- **Thread:** none
- **Struck apart with:** hammer

## Dimensions & Specifications (Trade series (formwork wedge bolts and pins))

| Joint | Closure | Thread | Struck apart with |
| --- | --- | --- | --- |
| panel edge rail to edge rail | wedge through a slotted pin | none | hammer |
| panel to waler | wedge through a slotted pin | none | hammer |

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

### Are Concrete Formwork Wedge Bolts made to a recognized standard?

Yes — they are manufactured to Trade series (formwork wedge bolts and pins), so dimensions are interchangeable between suppliers when you quote the standard on your order.

### What are Concrete Formwork Wedge Bolts used for?

Fixing steelwork, plant and services to concrete and masonry, where the anchor is set in a drilled hole and its capacity is governed by the base material rather than by the steel. They are supplied to Trade series (formwork wedge bolts and pins).

### Which industries use Concrete Formwork Wedge Bolts?

They are commonly specified in fit-out & drylining, general machine building and maintenance & repair (mro), among other sectors.

### How do I choose the right size of Concrete Formwork Wedge Bolts?

Match the size to the mating part using the dimension table on this page.

### Can I get a quote for Concrete Formwork Wedge Bolts 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: [Concrete Formwork Wedge Bolts — specifications & sizes](https://engineeringhardware.com/fastener/concrete-formwork-wedge-bolts/)

### Concrete Formwork Wedge Bolts Specification Guides

### Related Fastener Applications