DIN 15237 Seating Screws
DIN 15237 seating screws, M6 to M12 — the flat large-diameter head screw for clamping inserts and seats with a wide, low bearing circle — with the collected size table: head diameter, head height and per-length thread data.
Last updated: 2026-11
Specifications
DIN 15237 is the seating screw: a large-diameter, low flat head designed to clamp seats and inserts — bearing pads, slide elements, wear plates — where the load must be spread over the widest practical circle and the head must stay low enough not to stand into the moving part’s path. The collected table runs M6 to M12 and is built around length selection: for each thread size it prints the head diameter d k (20 mm at M6 rising to 42 mm at M12), the head height k, an additional tabulated head feature n, and the length ladder L with the thread length b listed per length — e.g. at M10 the lengths 30/35/40/50 carry thread lengths 18/20/20/20, because this screw’s grip split is part of its function: the smooth head side clamps, and the thread engages only the seat it pulls against. Sourced for machine beds, fixture seats and guiding elements, it is the screw that holds replaceable wear parts true. Materials, property classes and finishes are not printed by the collected specification and follow the drawing callout.
| Standard | DIN 15237 — seating screws (large flat head for seats and inserts) |
|---|---|
| Series | M6 – M12 (4 sizes tabulated) |
| Tabulated geometry | Per size: pitch P, head diameter d k, head feature n (tabulated), head height k, length ladder L, thread length b per length |
| Dimensions at M6 | Head d k 20; n 14; head height k 2.5; lengths L 20; thread b 12 |
| Dimensions at M10 | Head d k 35; head height k 4.5; lengths L 30/35/40/50 with thread b 18/20/20/20 |
| Dimensions at M12 | Head d k 42; head height k 5.2; lengths L 35/40/50/60 with thread b 20/25/28/28 |
| Head form | Large-diameter low flat head — wide bearing circle for clamping seats and wear parts |
| Materials / strength | Not tabulated by the collected specification — per RFQ (property class and finish per drawing callout) |
Materials
- Material, property class and finish specified per RFQ — the collected specification table covers geometry only
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 15237 Seating Screws) 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
What makes a seating screw different from just using a large washer under a normal screw?
Three things the collected table makes visible. First, proportions: the head is a single machined circle (d k 35 mm at M10) with a defined low height k of 4.5 mm — a screw-plus-washer stack of the same bearing diameter stands taller and adds a joint interface that can loosen. Second, the length-thread coupling: the table prints a specific thread length b for each length L (at M10, lengths 30–50 mm all carry 18–20 mm of thread), so the standard is engineered so the head clamps the seat over a fixed split — you select from the ladder rather than improvising one. Third, the head geometry is tabulated as one piece, so the seating screw copies from drawing to drawing without a washer’s separate tolerance stack. If your seat clamping tolerates a taller stack, a washer solution is cheaper per unit; if the seat must locate and run true with minimum projection, the seating screw is the purpose-built part.
What is the MOQ and lead time for these screws?
Minimum order quantity is 10,000 pieces per item. Stocked sizes ship in 3–7 days; non-stock diameters, lengths or finishes are quoted with a confirmed schedule. Common sizes in this designation are widely stocked — confirm the exact schedule against quantity and size mix at quotation.
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