---
title: "What Are Concrete Screw Anchors Used For?"
description: "Concrete Screw Anchors (Trade series (HUS4)) are used for direct-thread concrete fixing in a prepared drilled hole. Catalogued 8 mm to 16 mm."
url: https://engineeringhardware.com/applications/concrete-screw-anchors/
source: Engineering Hardware & Fasteners
---

# What Are Concrete Screw Anchors Used For?

Anchors & Concrete Fixings · Trade series (HUS4) · Application guide

Typical applications, the industries that specify concrete screw anchors, and how to choose the right size, material and finish for the joint.

Concrete Screw Anchors are used for direct-thread concrete fixing in a prepared drilled hole. They are manufactured to Trade series (HUS4), and selection is driven by the nominal diameter, the fit and tolerance the assembly requires, and the service environment.

- **Primary duty:** Direct-thread concrete fixing in a prepared drilled hole
- **Governing standard:** Trade series (HUS4)
- **Nominal diameter range:** 8 mm to 16 mm
- **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 Screw Anchors Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/Hilti-HUS4-Concrete-Screw-Anchors.webp)

Concrete Screw Anchors (Trade series (HUS4)) are specified where the joint requires direct-thread concrete fixing in a prepared drilled hole. The sections below cover the typical end-uses by industry, the size and material decisions for each, assembly practice, and the applications this fastener type is not suited to. Stocked across roughly 8 mm to 16 mm, they cover general to heavy-duty work.

## Typical Applications for Concrete Screw Anchors

The most common settings where these are specified:

- **Electrical services:** conduit, tray and support brackets fixed directly to concrete.
- **Window and door installation:** frames attached to concrete or masonry reveals.
- **Temporary works:** formwork rails, guards and fixtures installed and removed quickly.
- **Equipment support:** light and medium brackets anchored to a concrete slab.

Product catalog

## Related Concrete Screw Anchors products

[![Yellow-Zinc J-Hook Expansion Anchor Bolts Concrete&Masonry Suspension&Hanging Bolt](https://img.engineeringhardware.com/Yellow-Zinc-J-Hook-Expansion-Anchor-Bolts-Concrete-Masonry-Suspension-Hanging-Bolt.webp)](https://engineeringhardware.com/product/yellow-zinc-j-hook-expansion-anchor-bolts-concrete-masonry-suspension-hanging-bolt/)

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### [Yellow-Zinc J-Hook Expansion Anchor Bolts Concrete&Masonry Suspension&Hanging Bolt](https://engineeringhardware.com/product/yellow-zinc-j-hook-expansion-anchor-bolts-concrete-masonry-suspension-hanging-bolt/)

Hooks · DIN, GB

**US$0.12**MOQ 10,000 pieces

[![Sleeve Type Expansion Anchor Bolt with Hexagon Nuts Spring and Flat Washer](https://img.engineeringhardware.com/Sleeve-Type-Expansion-Anchor-Bolt-with-Hexagon-Nuts-Spring-and-Flat-Washer.webp)](https://engineeringhardware.com/product/sleeve-type-expansion-anchor-bolt-with-hexagon-nuts-spring-and-flat-washer/)

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### [Sleeve Type Expansion Anchor Bolt with Hexagon Nuts Spring and Flat Washer](https://engineeringhardware.com/product/sleeve-type-expansion-anchor-bolt-with-hexagon-nuts-spring-and-flat-washer/)

Hexagon Head with Flange · ANSI, BSW, DIN, GB, GOST, JIS

**US$0.58 – 0.70**MOQ 1,000 pieces

[![Galvanized Ground Screw, Ground Screw Anchor, Ground Screw Pole Anchor](https://img.engineeringhardware.com/Galvanized-Ground-Screw-Ground-Screw-Anchor-Ground-Screw-Pole-Anchor-2.webp)](https://engineeringhardware.com/product/galvanized-ground-screw-ground-screw-anchor-ground-screw-pole-anchor-2/)

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### [Galvanized Ground Screw, Ground Screw Anchor, Ground Screw Pole Anchor](https://engineeringhardware.com/product/galvanized-ground-screw-ground-screw-anchor-ground-screw-pole-anchor-2/)

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**US$1.20**MOQ 1 ton

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DIN · Galvanized Steel

**US$0.06**MOQ 10,000 pieces

[![Malaxy Carbon Steel Stainless Steel Concrete Anchor Bolts Hexagonal Head Screws](https://img.engineeringhardware.com/Malaxy-Carbon-Steel-Stainless-Steel-Concrete-Anchor-Bolts-Hexagonal-Head-Screws.webp)](https://engineeringhardware.com/product/malaxy-carbon-steel-stainless-steel-concrete-anchor-bolts-hexagonal-head-screws/)

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**US$0.096 – 0.60**MOQ 1,000 pieces

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### [Dia. 16mm-Psb500 Hot Rolled Rock Bolt with Nut for Mining](https://engineeringhardware.com/product/dia-16mm-psb500-hot-rolled-rock-bolt-with-nut-for-mining/)

Concrete Anchor · GB, GB, ASTM

**Price on request**MOQ 1,000 pieces

[View all Screw, Concrete & Masonry Anchors →](https://engineeringhardware.com/fastener-products/anchors-construction-fixings/screw-concrete-masonry-anchors/) [Full product catalog](https://engineeringhardware.com/products/)

## How to Specify Concrete Screw Anchors for Your Application

- **Size:** Match the nominal size to the mating thread or hole. This product spans 8 mm–16 mm; 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 (HUS4). Quoting the standard on your order guarantees interchangeable dimensions between suppliers.

## Where Concrete Screw Anchors 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 screw anchors 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 8 Concrete Screw Anchors to Trade series (HUS4). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected.

- **Drill hole diameter (mm):** 8
- **Embedment depth (mm):** 85 / 90 / 100 / 110 / 115 / 130
- **Minimum base-material thickness options (mm):** 140 / 160 / 195 / 200
- **Minimum spacing options (mm):** 40 / 50 / 60 / 90
- **Minimum edge-distance options (mm):** 40 / 50 / 60 / 65
- **Head options:** hex-head / washer-head

## Dimensions & Specifications (Trade series (HUS4))

| Anchor diameter (mm) | Drill hole diameter (mm) | Embedment depth (mm) | Minimum base-material thickness options (mm) | Minimum spacing options (mm) | Minimum edge-distance options (mm) | Head options |
| --- | --- | --- | --- | --- | --- | --- |
| 8 | 8 | 85 / 90 / 100 / 110 / 115 / 130 | 140 / 160 / 195 / 200 | 40 / 50 / 60 / 90 | 40 / 50 / 60 / 65 | hex-head / washer-head |
| 10 | 10 | 85 / 90 / 100 / 110 / 115 / 130 | 140 / 160 / 195 / 200 | 40 / 50 / 60 / 90 | 40 / 50 / 60 / 65 | hex-head / washer-head |
| 12 | 12 | 85 / 90 / 100 / 110 / 115 / 130 | 140 / 160 / 195 / 200 | 40 / 50 / 60 / 90 | 40 / 50 / 60 / 65 | hex-head / washer-head |
| 14 | 14 | 85 / 90 / 100 / 110 / 115 / 130 | 140 / 160 / 195 / 200 | 40 / 50 / 60 / 90 | 40 / 50 / 60 / 65 | hex-head / washer-head |
| 16 | 16 | 85 / 90 / 100 / 110 / 115 / 130 | 140 / 160 / 195 / 200 | 40 / 50 / 60 / 90 | 40 / 50 / 60 / 65 | hex-head / washer-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

### Which industries use Concrete Screw Anchors?

They are commonly specified in temporary works, equipment support and electrical services, among other sectors.

### How do I choose the right size of Concrete Screw Anchors?

Match the nominal size to the mating thread or hole. This product is available from 8 mm to 16 mm; the full dimension table on this page lists each size.

### What material should Concrete Screw Anchors 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 Concrete Screw Anchors made to a recognized standard?

Yes — they are manufactured to Trade series (HUS4), so dimensions are interchangeable between suppliers when you quote the standard on your order.

### Can I get a quote for Concrete Screw Anchors 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 Screw Anchors — specifications & sizes](https://engineeringhardware.com/fastener/concrete-screw-anchors/)

### Concrete Screw Anchors Specification Guides

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