--- title: "What Are Wing Screws (DIN 316 Form) Used For?" description: "Wing Screws (DIN 316 Form) (DIN 316) are used for assemblies opened and closed by hand many times a day, where the wings are the drive and no tool is used." url: https://engineeringhardware.com/applications/wing-screws-din-316/ source: Engineering Hardware & Fasteners --- # What Are Wing Screws (DIN 316 Form) Used For? Screws · DIN 316 · Application guide Typical applications, the industries that specify wing screws (din 316 form), and how to choose the right size, material and finish for the joint. Wing Screws (DIN 316 Form) are used for assemblies opened and closed by hand many times a day, where the wings are the drive and no tool is used. They are manufactured to DIN 316, and selection is driven by the thread size, the fit and tolerance the assembly requires, and the service environment. - **Primary duty:** Assemblies opened and closed by hand many times a day, where the wings are the drive and no tool is used - **Governing standard:** DIN 316 - **Thread size range:** M4 to M10 - **Category:** Screws Application notes are general engineering guidance. Verify the property class and any approval requirement against your own design calculation. ![What Are Wing Screws (DIN 316 Form) Used For? application image](https://engineeringhardware.com/wp-content/uploads/2026/08/Wing-Screws.webp) Application guide for Wing Screws (DIN 316 Form) to DIN 316. The core duty of the type is assemblies opened and closed by hand many times a day, where the wings are the drive and no tool is used. The typical industries, the how-to-specify checklist, assembly practice and the exclusion cases are set out below. Stocked across roughly M4 to M10, they cover general to heavy-duty work. ## Typical Applications for Wing Screws (DIN 316 Form) The most common settings where these are specified: - **Maintenance & repair (MRO):** a stocked size for servicing existing plant where the original fastener spec must be matched. - **Fabrication & metalwork:** bench and on-site assembly of steel frames, enclosures and weldments. - **Electronics & enclosures:** mounting PCBs, panels and lids where the drive style and head height matter. - **Appliances & consumer goods:** high-volume assembly with power tools and consistent seating. - **Machine guarding & panels:** removable access covers that are opened for service. 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This product spans M4–M10; check the full table below for the exact dimensions of each size. - **Drive & head:** Pick the drive (socket, cross, slot) and head style for the tool access and seating surface; a recessed drive resists cam-out under power tools. - **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 DIN 316. Quoting the standard on your order guarantees interchangeable dimensions between suppliers. ## Installation & Assembly Practice - Match the driver exactly to the recess (PH ≠ PZ; hex key sizes per ISO 2936) and keep the tool axial — side load is the main cause of stripped drives. - In tapped holes, engage a thread length of at least 1× the nominal diameter in steel, 2× in aluminum. - Set power tools to a torque that seats the head without embedding it into the mating surface. ## Common Selection Mistakes with Wing Screws (DIN 316 Form) - Under-sizing the drive for the installation torque — a small recess at high torque strips before the screw is seated. - Using a countersunk head in thin sheet where the countersink removes most of the load-bearing material. - Specifying stainless in high-strength duty: A2-70 is roughly class 7 steel, not a 10.9 substitute. ## Where Wing Screws (DIN 316 Form) Are Not the Right Choice Not for high-preload structural joints (use a property-class bolt and nut), and not in thin sheet where a self-drilling or self-tapping type suits better. Custom manufacturing · Made to drawing ## Need a wing screws (din 316 form) outside the standard range? Dimensions, material, finish and form are specified from the drawing — a screw outside the standard range is a variation on existing tooling rather than a new design. Made by cold heading or warm forging. Minimum order from 2,000 pieces; samples within 7 days of drawing approval. [Custom screw manufacturing](https://engineeringhardware.com/custom/screws/)[Send a drawing](https://engineeringhardware.com/custom/screws/#rfq) ## Technical Drawing Dimensioned line drawing of M4 Wing Screws (DIN 316 Form) to DIN 316. Side view and top view, drawn to the dimensions in the table below and redrawn for any size selected. - **Pitch (mm):** 0.7 - **Wing span A (mm):** 22 - **Wing height (mm):** 10 - **Boss diameter (mm):** 9 - **Common length range (mm):** 8~30 - **Material:** Steel zinc / A2 ## Dimensions & Specifications (DIN 316) | Thread size | Pitch (mm) | Wing span A (mm) | Wing height (mm) | Boss diameter (mm) | Common length range (mm) | Material | Reference standard | | --- | --- | --- | --- | --- | --- | --- | --- | | M4 | 0.7 | 22 | 10 | 9 | 8~30 | Steel zinc / A2 | DIN 316 | | M5 | 0.8 | 27 | 12 | 11 | 10~40 | Steel zinc / A2 | DIN 316 | | M6 | 1.0 | 32 | 14 | 13 | 10~50 | Steel zinc / A2 | DIN 316 | | M8 | 1.25 | 40 | 17 | 17 | 12~60 | Steel zinc / A2 | DIN 316 | | M10 | 1.5 | 48 | 21 | 20 | 16~60 | Steel zinc | DIN 316 | 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 Wing Screws (DIN 316 Form)? They are commonly specified in machine guarding & panels, general machine building and maintenance & repair (mro), among other sectors. ### How do I choose the right size of Wing Screws (DIN 316 Form)? Match the nominal size to the mating thread or hole. This product is available from M4 to M10; the full dimension table on this page lists each size. ### What drive type do Wing Screws (DIN 316 Form) use? Drive depends on the head style — socket (hex key), cross (Phillips/Pozi) or slot. A recessed drive resists cam-out when driven with power tools; check the product head style on this page. ### What material should Wing Screws (DIN 316 Form) 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. ### Can I get a quote for Wing Screws (DIN 316 Form) 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: [Wing Screws (DIN 316 Form) — specifications & sizes](https://engineeringhardware.com/fastener/wing-screws-din-316/) ### Wing Screws (DIN 316 Form) Specification Guides ### Related Fastener Applications