DIN 137 A – Spring washers curved, Form A
DIN Standards are issued for a variety of components including industrial fasteners as Metric DIN 137 A Spring washer curved, Form A. DIN 137 A washers are manufactured from steel, stainless steel A2 or A4, spring steel, carbon steel, tempered steel, and black brass. DIN 137 A washers are available in a wide range of sizes, shapes, finishes, and materials.
Following are the specifications of German DIN 137 A:
Characteristics:
- Flexibility.
- RoHS compliant.
- Complies with CSN 021733; UNI 8840A.
- Strength class: 4.8.
Advantages:
- Curved washers can handle light loads while offering a broad range of deflection.
- They ensure an equal distribution of loads for threaded bolts, screws, and nuts.
- Compared to other washers, their deflection is higher.
- DIN 137 A has a high expansion underload and two points of contact.
Application:
- Curved spring washers are ideal for tasks that demand flexibility, light loads, and repetitive movements within a certain range.
- Curved spring washers are commonly employed in situations that require a firm grip, like when assembling engines, gearboxes, and other mechanical parts.
- They can also be utilized in electrical and electronic applications to aid in preventing the loosening of terminal connections.
- Use DIN 137 A spring washers to securely fasten lightweight parts onto delicate surfaces.
Dimensional specifications for DIN 137 A:
| Nominal size | d1 | d2 | s | h | Weight kg/1000pcs | For size | ||
| H14 | js16 | Nominal size | tol. | min. | max. | |||
| 3 | 3,2 | 8 | 0,5 | ±0,05 | 0,8 | 1,6 | 0,166 | M3 |
| 3,5 | 3,7 | 8 | 0,5 | ±0,05 | 0,9 | 1,8 | 0,154 | M3,5 |
| 4 | 4,3 | 9 | 0,5 | ±0,05 | 1 | 2 | 0,193 | M4 |
| 5 | 5,3 | 11 | 0,5 | ±0,05 | 1,1 | 2,2 | 0,286 | M5 |
| 6 | 6,4 | 12 | 0,5 | ±0,05 | 1,3 | 2,6 | 0,318 | M6 |
| 7 | 7,4 | 14 | 0,8 | ±0,06 | 1,5 | 3 | 0,7 | M7 |
| 8 | 8,4 | 15 | 0,8 | ±0,06 | 1,5 | 3 | 0,762 | M8 |
| 10 | 10,5 | 21 | 1 | ±0,07 | 2,1 | 4,2 | 2,04 | M10 |
| 12 | 13 | 24 | 1,2 | ±0,07 | 2,5 | 5 | 3,01 | M12 |
| 14 | 15 | 28 | 1,6 | ±0,08 | 3 | 6 | 5,51 | M14 |
| 16 | 17 | 30 | 1,6 | ±0,08 | 3,2 | 6,4 | 6,03 | M16 |
| 18 | 19 | 34 | 1,6 | ±0,08 | 3,3 | 6,6 | 7,84 | M18 |
| 20 | 21 | 36 | 1,6 | ±0,08 | 3,7 | 7,4 | 8,43 | M20 |
We manufacture DIN 137 A as per Custom Specifications and export to Poland, Greece, Denmark, Ireland, and other European Countries. For more Information, Please Contact Us or Inquiry Now.