Description
DIN 933/931 / ISO 4017 Hexagon Head Bolt M16x100 Steel Grade A Class 12.9 — BOLTON SKU 56536.
About the DIN 933/931 / ISO 4017 Hexagon Head
This item is listed as a DIN 933 931 ISO 4017 Hexagon head bolt in size M16 × 100 mm, product grade A, property class 12.9 steel. Under the ISO 898-1 designation system, class 12.9 denotes a nominal tensile strength of 1200 MPa with a yield-to-tensile ratio of 0.9 — the highest of the common property classes, produced in quenched-and-tempered alloy steel for the most heavily loaded joints. The M16 size carries a 2.0 mm coarse pitch and, per the ISO 4017 head table, a 24 mm width across flats and 10 mm nominal head height. The record’s dual DIN 933/931 reference spans both the fully threaded and part-threaded hexagon patterns; the thread coverage of stock offered against an enquiry is confirmed at quotation, together with the manufacturer’s test certification for the property class.
Key specifications
| Designation | DIN 933/931 / ISO 4017 pattern |
|---|---|
| Thread | M16, coarse (2.0 mm pitch) |
| Nominal length | 100 mm |
| Width across flats | 24 mm |
| Head height | 10 mm nominal |
| Property class | 12.9 (nominal tensile 1200 MPa per ISO 898-1) |
| Product grade | A |
Typical applications
Class 12.9 M16 bolts are used in heavily loaded machine joints — press frames, couplings, drive assemblies and support structures — where a high, reliable preload is engineered into the joint. They are tightened to calculated torque values appropriate to the property class.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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