Description
Overview
High strength structural bolting assembly for preloading (HSFG), High Tensile Grade 8.8, Hot Dip Galvanised, size M20 x 75 MM.
Sold per piece. Screwman code BFRIHTHDG2075H.
Description: High Speed Friction Grip EN14399-3
Dimensions – EN 14399-3 (HR) M20 x 75 MM
| Standard | EN 14399-3 (HR) |
|---|---|
| Product | High strength structural bolting assembly for preloading (HSFG) |
| Thread | M20 x 2.5 |
| Length (l) | 75 mm |
| Bolt across flats (s) | 32 mm |
| Bolt head height (k) | 13 mm |
| Nut height (m) | 18 mm |
| Washers (EN 14399-6, hardened) | 21 x 37 x 4 mm |
| Assembly | bolt + nut + 2 washers, k-class K1 |
Material, Grade & Strength
| Bolt property class | 8.8 |
|---|---|
| Nut property class | 8 |
| Washers | through hardened 300-370 HV |
| Standard | EN 14399-1 (preloading), EN 14399-3 HR |
Finish & Corrosion Protection
Hot dip galvanised: Molten zinc coating, typically 40-55 um (ISO 10684). For outdoor, structural and agricultural use; nuts are tapped oversize to suit galvanised bolts, so use HDG nuts with HDG bolts.
EN 14399-3 (HR) data sheet – all sizes
| Size | Bolt s | Head k | Nut m | Washer |
|---|---|---|---|---|
| M16 | 27 mm | 10 mm | 14.8 mm | 17x30x4 |
| M20 | 32 mm | 13 mm | 18 mm | 21x37x4 |
| M24 | 41 mm | 15 mm | 21.5 mm | 25x44x4 |
| M12 | 22 mm | 8 mm | 10.8 mm | 13x24x3 |
| M22 | 36 mm | 14 mm | 19.4 mm | 23x39x4 |
| M27 | 46 mm | 17 mm | 23.8 mm | 28x50x5 |
| M30 | 50 mm | 19 mm | 25.6 mm | 31x56x5 |
Nominal dimensions per EN 14399-3 (HR). Weights are calculated from nominal dimensions and are a guide only (±10%). Values for fit and strength should be confirmed against the standard for critical applications.
Specifications
No structured specifications are available yet.