--- title: "What Are Concrete Formwork Snap-Tie Wedges Used For?" description: "Concrete Formwork Snap-Tie Wedges (Trade series (snap-tie wedges)) are used for fixing steelwork, plant and services to concrete and masonry, where the ancho…" url: https://engineeringhardware.com/applications/concrete-formwork-snap-tie-wedges/ source: Engineering Hardware & Fasteners --- # What Are Concrete Formwork Snap-Tie Wedges Used For? Anchors & Concrete Fixings · Trade series (snap-tie wedges) · Application guide Typical applications, the industries that specify concrete formwork snap-tie wedges, and how to choose the right size, material and finish for the joint. Concrete Formwork Snap-Tie Wedges 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 (snap-tie wedges), 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 (snap-tie wedges) - **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 Snap-Tie Wedges Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/Concrete-Formwork-Snap-Tie-Wedges.webp) The primary duty of Concrete Formwork Snap-Tie Wedges 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. Below: the sectors that specify them in volume, the checklist used to select the right size and material for the application, installation notes, and the known limits of the type. ## Typical Applications for Concrete Formwork Snap-Tie Wedges 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. 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Quoting the standard on your order guarantees interchangeable dimensions between suppliers. ## Where Concrete Formwork Snap-Tie Wedges 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 snap-tie wedges 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 standard snap tie Concrete Formwork Snap-Tie Wedges to Trade series (snap-tie wedges). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected. - **Installation:** driven with a hammer - **Removal:** knocked off, tie snapped back - **Reusable:** wedge yes, tie no ## Dimensions & Specifications (Trade series (snap-tie wedges)) | Fits | Installation | Removal | Reusable | | --- | --- | --- | --- | | standard snap tie | driven with a hammer | knocked off, tie snapped back | wedge yes, tie no | | snap tie with jahn bracket | driven with a hammer | knocked off, tie snapped back | wedge yes, tie no | 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 ### How do I choose the right size of Concrete Formwork Snap-Tie Wedges? Match the size to the mating part using the dimension table on this page. ### What material should Concrete Formwork Snap-Tie Wedges 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 Formwork Snap-Tie Wedges made to a recognized standard? Yes — they are manufactured to Trade series (snap-tie wedges), so dimensions are interchangeable between suppliers when you quote the standard on your order. ### What are Concrete Formwork Snap-Tie Wedges 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 (snap-tie wedges). ### Can I get a quote for Concrete Formwork Snap-Tie Wedges 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 Snap-Tie Wedges — specifications & sizes](https://engineeringhardware.com/fastener/concrete-formwork-snap-tie-wedges/) ### Concrete Formwork Snap-Tie Wedges Specification Guides ### Related Fastener Applications