--- title: "What Are PCB Edge-Locking Supports Used For?" description: "PCB Edge-Locking Supports (Trade series (edge-locking board supports)) are used for setting a fixed distance on a screw that passes straight through it, with…" url: https://engineeringhardware.com/applications/pcb-edge-locking-supports/ source: Engineering Hardware & Fasteners --- # What Are PCB Edge-Locking Supports Used For? Standoffs & Spacers · Trade series (edge-locking board supports) · Application guide Typical applications, the industries that specify pcb edge-locking supports, and how to choose the right size, material and finish for the joint. PCB Edge-Locking Supports are used for setting a fixed distance on a screw that passes straight through it, with no thread of its own. They are manufactured to Trade series (edge-locking board supports), and selection is driven by the bore diameter, the fit and tolerance the assembly requires, and the service environment. - **Primary duty:** Setting a fixed distance on a screw that passes straight through it, with no thread of its own - **Governing standard:** Trade series (edge-locking board supports) - **Category:** Standoffs & Spacers Application notes are general engineering guidance. Verify the property class and any approval requirement against your own design calculation. ![What Are PCB Edge-Locking Supports Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/09/PCB-Edge-Locking-Supports.webp) The primary duty of PCB Edge-Locking Supports is setting a fixed distance on a screw that passes straight through it, with no thread of its own. 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 PCB Edge-Locking Supports The most common settings where these are specified: - **Electronics assembly:** holding boards off a chassis and stacking multiple boards at a fixed pitch. - **Enclosures & panels:** spacing a fascia, guard or label plate off the surface behind it. - **Machine alignment:** setting and correcting the height of a component on its mounting. - **General machine building:** fastening covers, brackets, motors and sub-assemblies on production equipment. - **Maintenance & repair (MRO):** a stocked size for servicing existing plant where the original fastener spec must be matched. 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Quoting the standard on your order guarantees interchangeable dimensions between suppliers. ## Where PCB Edge-Locking Supports 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 PCB edge-locking supports outside the standard range? Dimensions, material, finish and form are specified from the drawing — a standoff & spacer outside the standard range is a variation on existing tooling rather than a new design. Made by tapping or turning. Minimum order from 2,000 pieces; samples within 7 days of drawing approval. [Custom standoff & spacer manufacturing](https://engineeringhardware.com/custom/standoffs-spacers/)[Send a drawing](https://engineeringhardware.com/custom/standoffs-spacers/#rfq) ## Technical Drawing Dimensioned line drawing of edge slot with locking barb PCB Edge-Locking Supports to Trade series (edge-locking board supports). Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected. - **Board hole required:** no - **Critical fit:** board thickness - **Material:** nylon 6/6 ## Dimensions & Specifications (Trade series (edge-locking board supports)) | Retention | Board hole required | Critical fit | Material | | --- | --- | --- | --- | | edge slot with locking barb | no | board thickness | nylon 6/6 | | edge slot, snap into panel | no | board thickness and panel hole | nylon 6/6 | | edge slot, adhesive base | no | board thickness | flame-retardant nylon | 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 PCB Edge-Locking Supports? Match the size to the mating part using the dimension table on this page. ### What material should PCB Edge-Locking Supports 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 PCB Edge-Locking Supports made to a recognized standard? Yes — they are manufactured to Trade series (edge-locking board supports), so dimensions are interchangeable between suppliers when you quote the standard on your order. ### What are PCB Edge-Locking Supports used for? Setting a fixed distance on a screw that passes straight through it, with no thread of its own. They are supplied to Trade series (edge-locking board supports). ### Can I get a quote for PCB Edge-Locking Supports 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: [PCB Edge-Locking Supports — specifications & sizes](https://engineeringhardware.com/fastener/pcb-edge-locking-supports/) ### PCB Edge-Locking Supports Specification Guides ### Related Fastener Applications