DIN 6918 Square taper washers for U-sections
DIN Standards are issued for various components including industrial fasteners such as Metric DIN 6918 Square taper washers for U-sections. DIN 6918 washers are manufactured from steel and stainless steel. DIN 6918 washers are available in a wide range of sizes, shapes, finishes, and materials.
Following are the specifications of German DIN 6918 washers:
Characteristics:
- Durable and high strength.
- Corrosion resistant.
- Complies with UNI 5716.
- Strength class 1100 MPa.
Advantages:
- They are designed to fit bolt assemblies seamlessly onto support structures.
- Square taper washers offer increased load-bearing capacity and improved stability.
- Square washers have a higher surface area than round washers, which improves torque distribution.
- These washers help distribute the load over a larger area, reducing the chances of failure or damage.
Application:
- DIN 6918 washers are also used for HV connections (U-girders).
- They can be used on channel sections, underneath nuts with tapered flanges to enable the bolt assembly to fit square when tightened.
- They can also be used to compensate for the lack of parallelism.
- They can also be used in structural applications, rails, floodgate plants, stop gates, adjustable gates, electromagnets, semiconductors, heatsinks, and channel sections.
Dimension specification of DIN 6918 washers:
| Nominal size |
For thread size | d | a | b | c | e | h | r | t | z | Weight kg/1000pcs | ||||||||
| min = nominal size | max. | Nominal size | min. | max. | Nominal size | min. | max. | min. = nominal size | max. | Nominal size | min. | max. | approx. | approx. | |||||
| 13 | M12 | 13 | 13,43 | 26 | 24 | 28 | 30 | 29,35 | 30,65 | 1,6 | 1,9 | 3,7 | 4,9 | 3,9 | 5,9 | 2 | 0,7 | 1,68 | 18,3 |
| 17 | M16 | 17 | 17,23 | 32 | 29,5 | 34,5 | 36 | 35,2 | 36,8 | 1,6 | 1,9 | 4,45 | 5,9 | 4,9 | 6,9 | 2,4 | 0,8 | 2 | 31,7 |
| 21 | M20 | 21 | 21,52 | 40 | 37,5 | 42,5 | 44 | 43,2 | 44,8 | 2 | 2,5 | 5,25 | 7 | 5,8 | 8,2 | 2,8 | 0,9 | 2 | 27,1 |
| 23 | M22 | 23 | 23,52 | 44 | 41,5 | 56,5 | 50 | 49,2 | 50,8 | 2 | 2,5 | 6 | 8 | 6,8 | 9,2 | 3,2 | 1 | 2 | 82,8 |
| 25 | M24 | 25 | 25,52 | 56 | 53 | 59 | 56 | 55,05 | 56,95 | 2 | 2,5 | 6,26 | 8,5 | 7,3 | 9,7 | 3,2 | 1 | 3,8 | 129 |
| 25A | M24 | 25 | 25,52 | 56 | 53 | 59 | 56 | 55,05 | 56,95 | 2 | 2,5 | 6,25 | 7,65 | 6,45 | 8,85 | 3,88 | 1 | 3,8 | 128 |
| 28 | M27 | 28 | 28,52 | 56 | 53 | 59 | 56 | 55,05 | 56,95 | 2,5 | 3 | 6,26 | 8,5 | 7,3 | 9,7 | 3,2 | 1 | 3,8 | 122 |
| 28A | M27 | 28 | 28,52 | 56 | 53 | 59 | 56 | 55,05 | 56,95 | 2,5 | 3 | 6,25 | 7,65 | 6,45 | 8,85 | 3,88 | 1 | 3,8 | 121 |
| 31 | M30 | 31 | 32 | 62 | 59 | 65 | 62 | 61,05 | 62,95 | 2,5 | 3 | 6,52 | 9 | 7,8 | 10,2 | 3,2 | 1 | 3,8 | 156 |
| 31A | M30 | 31 | 32 | 62 | 59 | 65 | 62 | 61,05 | 62,95 | 2,5 | 3 | 6,5 | 8,05 | 6,85 | 9,25 | 3,96 | 1 | 3,8 | 155 |
| 37 | M36 | 37 | 38 | 68 | 65 | 71 | 68 | 97,05 | 68,95 | 3 | 3,5 | 6,68 | 9,4 | 8,2 | 10,6 | 3,2 | 1 | 3,8 | 182 |
| 37A | M36 | 37 | 38 | 68 | 65 | 71 | 68 | 67,05 | 68,95 | 3 | 3,5 | 7 | 8,7 | 7,5 | 9,9 | 4,24 | 1 | 3,8 | 191 |
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