Description
Overview
DIN601 defines the standard dimensions for hexagon head bolts, ensuring interchangeability and reliable engineering performance.
This selected size is specified with diameter M16, length 280 mm, thread M16, pitch 2 mm.
Sold in multiples of '1 pieces. 1 Box = '1 pieces.
Material, Grade & Strength
Select the material and grade to suit the application and service environment.
Finish & Corrosion Protection
Hot dip galvanising provides a heavy protective zinc coating.
Typical Uses
Used in machinery, fabrication, mining, agriculture, maintenance and general engineering.
Technical Tips
- Use matching mating components.
- Follow recognised torque specifications.
- Select the correct material and finish for the operating environment.
Dimensions – DIN 601 / ISO 4016 M16 x 280
| Standard | DIN 601 / ISO 4016 |
|---|---|
| Product | Hexagon head bolt, product grade C |
| Thread | M16 x 2 |
| Length (l) | 280 mm |
| Across flats (s) | 24 mm |
| Head height (k) | 10 mm |
| Thread length (b) | 57 mm (ref.) |
| Stress area (As) | 156.7 mm² |
| Weight (calculated) | 466.28 kg per 1 000 pieces |
Material, Grade & Strength
| Material | Mild steel (grade 4.6/4.8) |
|---|---|
| Property class | 4.6 / 4.8 (mild steel) |
| Tensile strength Rm (min) | 400 / 420 MPa |
| Yield strength (min) | 240 / 340 MPa |
| Proof load stress | 225 / 310 MPa |
| Matching nut | property class 5 (ISO 898-2) |
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.
DIN 601 data sheet – all sizes
| Size | Thread | Across flats (s) | Head height (k) | Thread length (b) | Stress area (As) |
|---|---|---|---|---|---|
| M3 | M3 x 0.5 | 5.5 mm | 2 mm | 12 mm (ref.) | 5.0 mm² |
| M4 | M4 x 0.7 | 7 mm | 2.8 mm | 14 mm (ref.) | 8.8 mm² |
| M5 | M5 x 0.8 | 8 mm | 3.5 mm | 16 mm (ref.) | 14.2 mm² |
| M6 | M6 x 1 | 10 mm | 4 mm | 18 mm (ref.) | 20.1 mm² |
| M7 | M7 x 1 | 11 mm | 4.8 mm | 20 mm (ref.) | 28.9 mm² |
| M8 | M8 x 1.25 | 13 mm | 5.5 mm | 22 mm (ref.) | 36.6 mm² |
| M10 | M10 x 1.5 | 17 mm (ISO: 16 mm) | 7 mm | 26 mm (ref.) | 58.0 mm² |
| M12 | M12 x 1.75 | 19 mm (ISO: 18 mm) | 8 mm | 30 mm (ref.) | 84.3 mm² |
| M14 | M14 x 2 | 22 mm (ISO: 21 mm) | 9 mm | 40 mm (ref.) | 115.4 mm² |
| M16 | M16 x 2 | 24 mm | 10 mm | 44 mm (ref.) | 156.7 mm² |
| M18 | M18 x 2.5 | 27 mm | 12 mm | 48 mm (ref.) | 192.5 mm² |
| M20 | M20 x 2.5 | 30 mm | 13 mm | 52 mm (ref.) | 244.8 mm² |
| M22 | M22 x 2.5 | 32 mm (ISO: 34 mm) | 14 mm | 69 mm (ref.) | 303.4 mm² |
| M24 | M24 x 3 | 36 mm | 15 mm | 73 mm (ref.) | 352.5 mm² |
| M27 | M27 x 3 | 41 mm | 17 mm | 79 mm (ref.) | 459.4 mm² |
| M30 | M30 x 3.5 | 46 mm | 19 mm | 85 mm (ref.) | 560.6 mm² |
| M33 | M33 x 3.5 | 50 mm | 21 mm | 91 mm (ref.) | 693.6 mm² |
| M36 | M36 x 4 | 55 mm | 23 mm | 97 mm (ref.) | 816.7 mm² |
| M39 | M39 x 4 | 60 mm | 25 mm | 103 mm (ref.) | 975.8 mm² |
| M42 | M42 x 4.5 | 65 mm | 26 mm | 109 mm (ref.) | 1120.9 mm² |
| M45 | M45 x 4.5 | 70 mm | 28 mm | 115 mm (ref.) | 1306.0 mm² |
| M48 | M48 x 5 | 75 mm | 30 mm | 121 mm (ref.) | 1473.1 mm² |
| M52 | M52 x 5 | 80 mm | 33 mm | 129 mm (ref.) | 1757.8 mm² |
| M56 | M56 x 5.5 | 85 mm | 35 mm | 137 mm (ref.) | 2030.0 mm² |
| M60 | M60 x 5.5 | 90 mm | 38 mm | 145 mm (ref.) | 2362.0 mm² |
| M64 | M64 x 6 | 95 mm | 40 mm | 153 mm (ref.) | 2676.0 mm² |
Nominal dimensions per DIN 601 / ISO 4016. 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
| Measurement Type | Metric |
|---|---|
| Thread Size | M16 |
| Thread Pitch | 2 mm |
| Thread Style | Partial Thread |
| Drive Size | 24 mm |
| Drive Type | External Hex |
| Head Style | Hex |
| Diameter | M16 |
| Length | 280 mm |
| Material | Mild Steel |
| Finish | Hot Dip Galvanized |
| Grade | Grade 4.6 |
| Standards Met | SABS - ISO 1461 |
| Package Quantity | 1 |
| Package Type | Box |