Leading UK Manufacturer of SN 425 Hammerhead T Bolts.
We specialise in the precision manufacture and supply of high-integrity SN 425 hammerhead T bolts, engineered to meet exact technical specifications similar to DIN 261 for heavy industrial and structural applications.
Offering hot-forged sizes ranging from M24 up to M100 and lengths of up to 6000mm, we deliver robust fastening solutions tailored to the most demanding operating environments.
Utilising advanced in-house hot-forging, precision machining, and thread rolling processes, we ensure consistent dimensional accuracy and structural performance across every batch. Whether for standard construction requirements or bespoke material grades and head forms, we provide a complete, high-quality manufacturing solution.

| D | D1 | B | H | DB | K | N | M | R | T max |
L |
|---|---|---|---|---|---|---|---|---|---|---|
| mm | mm | mm | mm | mm | mm | mm | mm | mm | mm | mm |
| M24 | 20 | 100 | 12 | - | 15 | 24 | 43 | 2 | - | To suit customer requirements. |
| M30 | 26 | 120 | 15 | - | 19 | 30 | 54 | 2 | - | |
| M36 | 31 | 160 | 18 | M12 | 23 | 36 | 66 | 3 | 23 | |
| M42 | 37 | 180 | 21 | M12 | 26 | 42 | 80 | 3 | 23 | |
| M48 | 42 | 210 | 24 | M12 | 30 | 48 | 88 | 3 | 23 | |
| M56 | 49 | 250 | 28 | M16 | 35 | 56 | 102 | 4 | 30 | |
| M64 | 57 | 280 | 32 | M16 | 40 | 64 | 115 | 4 | 30 | |
| M72 | 65 | 300 | 36 | M16 | 45 | 72 | 128 | 4 | 30 | |
| M80 | 73 | 320 | 36 | M20 | 50 | 80 | 140 | 5 | 33 | |
| M90 | 83 | 360 | 45 | M20 | 55 | 90 | 155 | 5 | 33 | |
| M100 | 93 | 400 | 45 | M20 | 62 | 100 | 170 | 5 | 33 |