DIN 975 Threaded Rod
Metric fully threaded rod to the DIN 975 designation — M2–M64, 6g thread, 1–3 m lengths, carbon steel classes 4.6–12.9 and A2/A4 stainless (class 70 to M24, class 50 above). Withdrawn as a standard and absorbed into DIN 976-1, but still the trade's most-ordered designation.
Last updated: 2026-11
Specifications
DIN 975 is the designation most buyers still write on a threaded-rod line, even though the standard itself has been withdrawn and its technical content folded into DIN 976-1. It defines the headless, continuously threaded bar used with a nut on each end — suspensions, pipe supports, embedded anchorages and general MRO. Stock spans carbon steel classes from 4.6 up to 12.9 plus A2 (304) and A4 (316) stainless; stainless rods are commonly end-marked blue or green for A2 and red for A4 for quick site identification. For new specifications, DIN 976-1 is the current document to cite — DIN 975 remains the compatibility and ordering shorthand.
| Standard | DIN 975 (withdrawn; technical content absorbed into DIN 976-1 — cite DIN 976-1 for new specifications) |
|---|---|
| Product | Fully threaded rod / all-thread rod, headless, nut both ends |
| Thread size range | M2–M64, coarse and fine thread options |
| Thread tolerance | 6g (metric ISO profile, per ISO 724 / ISO 965-1 trade practice) |
| Standard lengths | 1 m, 2 m, 3 m; custom lengths available |
| Carbon steel classes | 4.6 / 4.8 / 8.8 / 10.9 / 12.9 (catalogued variously under the legacy designation) |
| Stainless grades | A2 (304) and A4 (316); class 70 (≥700 MPa) to M24, class 50 (≥500 MPa) from M27 |
| Identification | Common trade colour-coding: A2 blue or green ends, A4 red ends |
| Typical applications | Construction, suspension systems, pipe supports, machinery, MRO |
Materials
- Carbon steel (classes 4.6–12.9)
- A2 stainless steel (304 family)
- A4 stainless steel (316 family)
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 975 Threaded Rod) 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 1,000–10,000 pieces depending on size. Stock items run 3–7 days. High-strength and custom parts run 15–25 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
Is DIN 975 still a valid standard to specify?
The standard has been formally withdrawn and its content integrated into DIN 976-1, but the designation is still the most widely recognized threaded-rod reference worldwide and products are still made and stocked to it. The practical rule: order by DIN 975 if your installed base or drawings use it, but cite DIN 976-1 on new specifications — quality systems increasingly require the current document, and DIN 976-1 adds end-marking and length-tolerance clauses the legacy designation never carried.
What is the difference between DIN 975 and DIN 976 threaded rod?
Substance versus status. DIN 976-1 carries the same fully-threaded-rod product with tightened definitions: 6g thread to ISO 965-2, property classes 4.8/5.6/5.8/8.8/10.9/12.9 catalogued for M3–M39, mandatory end marking for steel M5 and larger, and a standard length range to 1,000/2,000/3,000 mm with a js17 length tolerance above 1,000 mm. DIN 975 lives on as the legacy ordering designation for the same physical product.
Related knowledge
- What Bolt Property Classes 8.8, 10.9 and 12.9 Encode — and When High Strength Stops Being the Right Choice
- Bolt Grade Selection: ISO 898-1 8.8/10.9/12.9 vs ASTM A307 and A325
- 8.8 vs 10.9 vs 12.9 Bolts: Strength, Hardness and Cost — What the Evidence Settles
- Calculating Bolt Preload and Clamp Force: Torque, Friction and Tightening Method
- How to Determine Tightening Torque and Choose a Tightening Method for a Bolted Joint
- Fastener Failure Modes: Which Fatigue, Creep and SCC Controls the Evidence Supports
- Hydrogen Embrittlement in High-Strength Bolts: Which Grades Need Controls, Which Coatings and Baking Schedules Are Acceptable, and What to Require Before the RFQ
- Threaded Rod and Stud Bolt Standards: Mapping DIN 975/976 and ASTM A193/A320 to Grades, Coatings and Certification
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