DIN 318 Wing Screws, Edged Wings (American Form)
DIN 318 wing screws with edged wings, American form, M4 to M12: wing span, grip and point geometry, the commercial length ladder to 60 mm, and a market-common reference table.
Last updated: 2026-11
Specifications
DIN 318 is the American-form wing screw — edged (flat-sided) wings you can turn hard with the heel of the hand — and the collected 07/1999-edition table runs M4 to M12 with the thread geometry (P, a max), the wing and body dimensions (e min, h min, g min), and the point-side dimensions d2 min / d3 min plus m min (3.2 at M4 to 10 at M12). The second grid is the commercial length ladder, 6 to 60 mm per size, where the M12 column prints an "X" at l 60 — the source's own marker, carried verbatim. A third table gives the market-common American-form geometry from M3, slightly freer than the DIN values, useful when a drawing calls the form rather than the standard. Hand-tightened fixtures, jigs, access covers and tooling plates are the duty: the screw is a clamp you operate without tools, not a structural fastener.
| Standard / scope | DIN 318 wing screws, edged wings, American form — M4 to M12, edition 07/1999 |
|---|---|
| Thread geometry | P and a max per size; point/body d2 min and d3 min; m min 3.2 (M4), 5 (M6), 8 (M10), 10 (M12) |
| Wing geometry | e min, h min, g min per size — the span and grip that set the hand torque you can apply |
| Commercial lengths l | 6 to 60 mm by size; the M12/l60 cell prints "X" (source order marker, verbatim) |
| Market reference | American-form wing screws M3 to M12 market-common e/h/d2 values tabulated beside the DIN values |
| Not tabulated | Material, strength, finish — per RFQ |
Materials
- Wing screws order in free-cutting steel, zinc-plated for shop use, or stainless A2 for washdown and outdoor tooling; plastic-winged equivalents are a different product family. State thread, length under the wing and finish on the RFQ — and if the screw must survive repeated high hand-torque, say so, because wing stiffness is where the cheap versions differ from the standard
Ordering & documentation
Documents
Shipments are backed by Mill Test Certificate (MTC), Dimensional Report, Salt Spray Test Report on request, with full batch traceability from raw material to finished product. Quality management follows the owner-confirmed compliance list: ISO 9001:2015, RoHS, REACH. Exact document sets are confirmed on the order.
Quotation
- The fastener family (DIN 318 Wing Screws, Edged Wings (American Form)) plus the standard designation from your drawing — DIN / ISO / JIS / ASTM / ANSI, or a drawing for custom parts.
- Size (diameter and length), thread type (metric or inch), property class or grade, and coating or finish.
- Quantity per size and your target delivery date.
- Destination country, and any required documents (for example a mill test certificate) so the quote includes them.
Sample & supply
Minimum order quantity is 10,000 pieces. Stock items run 3–7 days. Quantities or variants outside the standard range are confirmed at quotation.
Storage & shipping
Parts are packed for export and shipped factory-direct to buyers in Europe, Asia, the Americas and the Middle East. Store fasteners dry and protected until installation, and keep coated parts in their packaging until use; specific packing and preservation requirements can be stated on the order and confirmed at quotation.
Frequently asked questions
DIN 316 wing screws exist too — how does DIN 318 differ?
Both are American-form wing screws; the registered DIN 316 page carries the rounded-wing version, while DIN 318 tabulated here has the edged (flat-sided) wings. The edge is not cosmetic: a flat wing face transmits more torque from the same finger pressure and resists slipping under an oily thumb, which is why jigs and clamp straps usually print 318. The dimension columns are similar in shape but not identical in value, so the standards do not interchange on a controlled drawing — order by the number the drawing carries, and if you are designing new, pick by how the operator actually turns it.
Why does the length ladder print an "X" for M12 at 60 mm?
The "X" is the source table's own marker in the M12/60 cell — carried verbatim here, not cleaned up. Read pragmatically: it marks the corner of the commercial range where the M12 wing screw is not a stock length in the source's listing, not a dimension of zero. For an M12 that long the practical answer is usually a stud-and-wing-nut arrangement or a custom length, both of which we quote against drawing. For anything inside the printed ladder, name thread and length and the standard delivers the part.
Related knowledge
- Thread-Forming vs Thread-Cutting vs Thread-Rolling Self-Tapping Screws: What the Evidence Settles on Base Material
- Screw Family Selection by Base Material: Wood, Machine and Self-Tapping Threads, Engagement and Coating
- Hex Bolts vs Socket Head Cap Screws: What the Evidence Settles on Strength, Clearance and Cost
Request a Quote
Get factory-direct pricing from the manufacturer.
What to include in your inquiry
- ✓ Standard and property class (e.g. DIN 912, ISO 4762, class 8.8) — or a drawing for custom parts.
- ✓ Sizes, lengths and thread type (metric or inch).
- ✓ Quantity per size and your target delivery date.
- ✓ Destination country, plus any coating or finish requirement.
- ✓ Any documents you need with the shipment (e.g. mill test certificate) so the quote includes them.
- ✓ Your inquiry goes straight to the factory team by email and gets a reply within 24 hours.
- ✓ Factory-direct pricing
- ✓ Standard and custom specifications
- ✓ Factory-direct export to buyers in Europe, Asia, the Americas and the Middle East
- ✓ Full fastener family support