DIN 976 Threaded Rod
Metric stud bolts and fully threaded rod to DIN 976-1 — 6g thread to ISO 965-2, product grade A to ISO 4759-1, property classes 4.8 to 12.9 (M3–M39), A2-70/A4-70 stainless to M24, lengths to 3,000 mm with js17 tolerance above 1 m, mandatory end marking from M5.
Last updated: 2026-11
Specifications
DIN 976-1 is the current German standard for metric stud bolts and full-thread rod — the document that absorbed DIN 975 and the one to cite on new drawings. Because a full-thread rod has no shank, the entire tensile path runs through the thread, so the standard pins down exactly the details that make a rod verifiable: external thread tolerance 6g to ISO 965-2, dimensional accuracy to product grade A of ISO 4759-1, property-class marking on one end of steel rods M5 and larger, and a defined length tolerance above 1,000 mm. DIN 976-2, often mislabeled online as the partially-threaded-rod standard, actually covers interference-fit (MFS) studs to DIN 8141-1 holes.
| Standard | DIN 976-1 (metric stud bolts and full-thread rod); DIN 976-2 covers interference-fit (MFS) studs to DIN 8141-1 holes |
|---|---|
| Thread | Metric ISO profile, external tolerance class 6g to ISO 965-2 |
| Dimensions and accuracy | Product grade A to ISO 4759-1, stud ends to ISO 4753 |
| Carbon steel classes | 4.8, 5.6, 5.8, 8.8, 10.9, 12.9 (sizes M3–M39) |
| Stainless grades | A2-70 / A4-70 for M3–M24; larger sizes by agreement |
| Nominal lengths | Range to 1,000 / 2,000 / 3,000 mm; length tolerance above 1,000 mm js17 (product grade B) |
| End marking | Mandatory on steel rods M5 and larger: property class symbol (class 4.8 excepted, colour code permitted); A2 / A4 on stainless |
| Designation example | Stud bolt DIN 976-1-M10 x 1000-8.8 (1 m, class 8.8, M10) |
| Nut pairing | Class-matched nut (6H); hot-dip galvanized assemblies need oversize-tapped nuts |
| Typical applications | Supports, racking, solar rail, preloaded stud assemblies, general fixing |
Materials
- Carbon steel (classes 4.8–12.9)
- A2 stainless steel (A2-70)
- A4 stainless steel (A4-70)
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 976 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
Why does the property-class marking on threaded rod matter?
Because class 4.8 and class 8.8 rods look identical in a bin and behave nothing alike under torque. DIN 976-1 makes the marking mandatory for steel rods M5 and larger (class 4.8 excepted, with a permitted colour code in its place, and A2/A4 markings on stainless). Rod that arrives under the old DIN 975 label frequently carries no marking at all, which makes the grade unverifiable from the part itself — one of the concrete reasons new specifications moved to DIN 976-1.
Is DIN 976-2 the standard for partially threaded rod?
No — this is a persistent procurement myth. DIN 976-2 covers metric interference-fit thread (MFS) stud bolts, the short studs installed into holes produced to DIN 8141-1 for mould and tool retention. Fully threaded rod is DIN 976-1; if a drawing genuinely needs a partially threaded stud, that is a different product callout and should be quoted as such.
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