--- title: "Punching" description: "Punching for custom fasteners: what the process suits, what it does not, and which parts it produces. Samples in 7 days, MOQ from 2,000 pieces." url: https://engineeringhardware.com/custom/punching/ source: Engineering Hardware & Fasteners --- # Punching Punching · Fastener manufacturing process Send a drawing, a sample or a photograph. Samples follow within 7 days of the drawing being approved. Request a quotation One business day for a reply. Spring Lock Washers — ISO 7980 ／ DIN 127 Punching is used at Engineering Hardware to make custom washers, supports, clamps & brackets, panel latches & catches to a customer drawing. Shearing a hole or a profile out of sheet with a punch and die. The minimum order is 2,000–5,000 pieces and samples follow within 7 days of the drawing being approved. Shearing a hole or a profile out of sheet with a punch and die. The shearing half of press work, and the reason a stamped washer has a bright band and a rough band on its cut edge — the punch shears part of the thickness and the remainder fractures. Clearance between punch and die is what controls the ratio, and it is set from the material thickness. Where the hole matters more than the outline, punching is done as its own operation rather than in a progressive die. ## What Punching is the right choice for - Holes and profiles in sheet - Secondary holes in already-formed parts - Short runs on a turret press, with no dedicated die ## Where it is the wrong choice - Edge condition is sheared, not machined - Minimum hole size is limited by material thickness ## Parts produced this way - [Custom Washer](https://engineeringhardware.com/custom/washers/) — [56 standard parts in the catalog](https://engineeringhardware.com/fasteners/washers/) - [Custom Support & Bracket](https://engineeringhardware.com/custom/supports/) — [14 standard parts in the catalog](https://engineeringhardware.com/fasteners/supports/) - [Custom Panel Latch](https://engineeringhardware.com/custom/latches/) — [7 standard parts in the catalog](https://engineeringhardware.com/fasteners/latches/) ## Usually combined with Punching is rarely the only operation on a part. On most jobs it sits in a sequence with: - [Stamping](https://engineeringhardware.com/custom/stamping/) - [Grinding](https://engineeringhardware.com/custom/grinding/) ## Order terms - **Minimum order:** 2,000–5,000 pieces. The exact figure depends on the part: it is set by the tooling the drawing calls for, and is confirmed when the drawing has been reviewed. - **Samples:** Within 7 days of drawing approval. - **Drawing:** Preferred, but not required — a sample, photographs or a sketch is enough to start. ## What a quotation needs Nine things, and a drawing settles most of them at once. Where a field is unknown, say so — an assumption stated is better than a blank, and several of these can be recommended rather than specified. - **Drawing:** A 2D drawing (PDF or DWG) or a 3D model settles almost every other question on this list at once. - **Dimensions:** Diameter, length, head size and any features — enough to know what is being made. - **Tolerance:** Tolerance is the single biggest cost driver. Tell us which dimensions are critical and which are not — holding everything tight costs money on features nobody measures. - **Material:** Carbon steel, alloy steel, stainless, brass, aluminium, titanium — or the application, and we will suggest one. - **Strength grade:** Property class to ISO 898-1 (8.8, 10.9, 12.9) or stainless class to ISO 3506 (A2-70, A4-80). This decides the material and the heat treatment together. - **Thread standard:** Metric coarse, metric fine, UNC, UNF, BSW or a pipe thread — and the tolerance class if it is specified. - **Surface finish:** Zinc, hot-dip galvanised, black oxide, Dacromet, Geomet, nickel, passivation, or plain. Salt-spray hours if you have a requirement. - **Quantity:** Annual volume and first-order quantity. Volume changes which process is the right one, so it changes the price more than most buyers expect. - **Application & environment:** What the part holds together, and what it has to survive — temperature, vibration, chemicals, salt. This is what lets us catch a specification that will not work before it is made. ## Draw it here No CAD, no account, nothing to install. Draw the part in your browser, generate a real ISO metric thread from M1 to M100 with the end treatment it needs, dimension it, and export a PDF or a DXF to attach below. Sheets run to two metres for long studs and threaded rod. Open the drawing builder ## Questions ### What is the minimum order quantity for a custom part? Between 2,000 and 5,000 pieces for most parts. The exact figure depends on the part: it is set by the tooling the drawing calls for, and is confirmed when the drawing has been reviewed. ### How long does a sample take? Within 7 days once the drawing has been approved. The drawing stage comes first, and for a part being reverse-engineered from a sample it is where most of the time goes. ### Can you make a part without a drawing? Yes. A physical sample, photographs against a scale, or a dimensioned sketch are all workable starting points. A drawing is produced from whichever of those you have and sent back for approval before anything is made. ### When is Punching not the right process? Edge condition is sheared, not machined. Minimum hole size is limited by material thickness. ### Which fasteners are made by punching? In this catalog: washer, support & bracket, panel latch. Whether it is the right process for a particular part depends on the drawing and the quantity. ## Parts of this kind we already make Showing 36 of 39 Aluminium-Flat-Sealing-Washers Bearing Lock Washers Belleville Washers Bonded Sealing Washers category-washers Conical Spring Washers Countersunk Washers Countersunk-Washers-Detail Cross-Bracing—Hillside-Washers Cup Washers Cup-Finishing-Washers-Detail din-6319g-conical-seat-washer din-6340-heavy-duty-clamping-washer E-Clip-Retaining-Washers External-Tooth Lock Washers Extra-Thick-Heavy-Duty-Flat-Washers Fender Washers — DIN 9021 Finishing Washers Flat Plain Washer — GB – T 95 – ISO 7091 (Series 079) — GB – T 95 – ISO 7091 Flat Plain Washer (GB – T 95) — GB – T 97.1 – ISO 7089 (Series 086) — GB – T 97.1 – ISO 7089 Flat Washers — ISO 7089 ／ ISO 7093 Flat Washers — ISO 7089 ／ ISO 7093 Applications1 Flat Washers — ISO 7089 ／ ISO 7093 Detail General Flat Washer — GB – T 97.1 – ISO 7089 (Series 087) — GB – T 97.1 – ISO 7089 General Flat Washer — GB – T 97.2 – ISO 7090 (Series 088) — GB – T 97.2 – ISO 7090 Hex-Washer-Flange-Self-Drilling-Screws Insulating Washers Internal-Tooth Lock Washers iso-7092-flat-washer-small-series iso-7094-extra-large-flat-washer iso-8738-flat-washer-for-clevis-pins Leveling Washers Micro-Spring-Lock-Washers Neoprene Washers Nylon Washers Plain Washer — GB – T 858 (Series 071) — GB – T 858 These are catalog parts, shown to say what the tooling already covers. A special is quoted from your drawing, not from this list. ## Drawing builder Draw the part, dimension it, and export a PDF or a DXF to attach to the form below. FASTENER **DRAWING** CMD Fastener drawing builder [https://engineeringhardware.com/](https://engineeringhardware.com/) Nothing you draw is uploaded until you send it, and the drawing lives in your own browser — export it before you close the tab. ## Send the part A drawing answers most of this at once. If you do not have one, fill in what you know and attach a photograph — samples follow within 7 days of the drawing being approved.