Description
Overview
Washers distribute load, protect mating surfaces, improve seating and support locking or sealing depending on the washer type. The correct washer should match the fastener diameter and the joint function.
This selected size is specified with diameter M48, thread M48.
Sold in multiples of '1 pieces. 1 Box = '1 pieces.
Material, Grade & Strength
Mild steel is an economical carbon steel option for general purpose fastening where high tensile strength is not required.
Finish & Corrosion Protection
Hot dip galvanising gives a heavier zinc coating for improved corrosion protection in outdoor or exposed conditions.
Typical Uses
Washers are used under bolt heads and nuts to spread load, protect surfaces, improve seating and provide locking or sealing support depending on the washer type.
Technical Tips
- Match the washer inside diameter to the fastener size.
- Use flat washers for load spreading and surface protection.
- Use spring, toothed or lock washers only where their locking function is appropriate.
- Use bonded washers where sealing against water ingress is required.
Selection Advice
Select the product by matching the thread, size, material, finish and function to the assembly. Avoid choosing only by appearance or a partial part number.
Dimensions – DIN 126 / ISO 7091 M48
| Standard | DIN 126 / ISO 7091 |
|---|---|
| Product | Flat washer, product grade C (black cut) |
| Nominal size | M48 |
| Inside diameter (d1) | 52 mm |
| Outside diameter (d2) | 92 mm |
| Thickness (h) | 8 mm |
| Weight (calculated) | 284.1 kg per 1 000 pieces |
Material, Grade & Strength
| Material | Steel |
|---|---|
| Hardness | 100-200 HV (product grade A, 100 HV class) |
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 126 data sheet – all sizes
| Size | Nominal size | Inside diameter (d1) | Outside diameter (d2) | Thickness (h) |
|---|---|---|---|---|
| M6 | M6 | 6.6 mm | 12 mm | 1.6 mm |
| M8 | M8 | 9 mm | 16 mm | 1.6 mm |
| M10 | M10 | 11 mm | 20 mm | 2 mm |
| M12 | M12 | 13.5 mm | 24 mm | 2.5 mm |
| M14 | M14 | 15.5 mm | 28 mm | 2.5 mm |
| M16 | M16 | 17.5 mm | 30 mm | 3 mm |
| M18 | M18 | 20 mm | 34 mm | 3 mm |
| M20 | M20 | 22 mm | 37 mm | 3 mm |
| M22 | M22 | 24 mm | 39 mm | 3 mm |
| M24 | M24 | 26 mm | 44 mm | 4 mm |
| M27 | M27 | 30 mm | 50 mm | 4 mm |
| M30 | M30 | 33 mm | 56 mm | 4 mm |
| M33 | M33 | 36 mm | 60 mm | 5 mm |
| M36 | M36 | 39 mm | 66 mm | 5 mm |
| M42 | M42 | 45 mm | 78 mm | 7 mm |
| M48 | M48 | 52 mm | 92 mm | 8 mm |
Nominal dimensions per DIN 126 / ISO 7091. 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 | M48 |
| Diameter | M48 |
| Material | Mild Steel |
| Finish | Hot Dip Galvanized |
| Grade | Grade 4.8 |
| Standards Met | DIN 126 C |
| Package Quantity | 1 |
| Package Type | Box |