Nuts, washers and pins matched to your bolts – from standard parts to anti-loosening solutions for joints under vibration, helping maintain clamp load and reduce maintenance.
DIN 934 · ISO 4032 · DIN 6923 · JIS B1181
Steel grades 8 / 10 / 12, stainless A2 / A4, finish matched to the bolt.
| Size | Pitch P | Across flats s | Height m |
|---|---|---|---|
| M3 | 0.5 | 5.5 | 2.4 |
| M4 | 0.7 | 7 | 3.2 |
| M5 | 0.8 | 8 | 4.7 |
| M6 | 1 | 10 | 5.2 |
| M8 | 1.25 | 13 | 6.8 |
| M10 | 1.5 | 16 | 8.4 |
| M12 | 1.75 | 18 | 10.8 |
| M16 | 2 | 24 | 14.8 |
| M20 | 2.5 | 30 | 18 |
| M24 | 3 | 36 | 21.5 |
Per ISO 4032 (DIN 934). Flange nuts per DIN 6923 / ISO 4161. Unit: mm.
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DIN 985 · ISO 7040 · DIN 980
Resist loosening under vibration in machinery and moving equipment.
| Size | Pitch P | Across flats s | Height m |
|---|---|---|---|
| M4 | 0.7 | 7 | 5 |
| M5 | 0.8 | 8 | 5 |
| M6 | 1 | 10 | 6 |
| M8 | 1.25 | 13 | 8 |
| M10 | 1.5 | 17 | 10 |
| M12 | 1.75 | 19 | 12 |
| M16 | 2 | 24 | 16 |
| M20 | 2.5 | 30 | 20 |
Nylon insert lock nuts per DIN 985. All-metal DIN 980 for high temperatures. Unit: mm.
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DIN 125 · ISO 7089 · DIN 127 · DIN 9021
Distribute clamp load and protect surfaces; spring washers add joint elasticity.
| Size | Inner Ø d1 | Outer Ø d2 | Thickness h | Spring DIN 127B (d2 × s) |
|---|---|---|---|---|
| M3 | 3.2 | 7 | 0.5 | 6.2 × 0.8 |
| M4 | 4.3 | 9 | 0.8 | 7.6 × 0.9 |
| M5 | 5.3 | 10 | 1 | 9.2 × 1.2 |
| M6 | 6.4 | 12 | 1.6 | 11.8 × 1.6 |
| M8 | 8.4 | 16 | 1.6 | 14.8 × 2 |
| M10 | 10.5 | 20 | 2 | 18.1 × 2.2 |
| M12 | 13 | 24 | 2.5 | 21.1 × 2.5 |
| M16 | 17 | 30 | 3 | 27.4 × 3.5 |
| M20 | 21 | 37 | 3 | 33.6 × 4 |
Flat washers per ISO 7089 (DIN 125A); spring washers per DIN 127B. Unit: mm.
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DIN 25201
Paired cam-face washers that keep clamp load stable under heavy vibration.
| Parameter | Value |
|---|---|
| Standard | DIN 25201 |
| Sizes | M3 – M80 metric; inch on request |
| Material | Hardened steel with anti-corrosion coating; stainless 316 / duplex |
| Design | Washer pair: cam faces inside, serrated faces outside |
| Variants | Standard, enlarged (SP), oversize holes |
Clamp load is secured because the cam angle exceeds the thread pitch angle – independent of friction. Unit: mm.
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DIN 2093 · DIN 6796
High axial load in a small space; compensate for thermal expansion and settling.
| Outer Ø De | Inner Ø Di | Thickness t | Free height l0 |
|---|---|---|---|
| 8 | 4.2 | 0.4 | 0.6 |
| 10 | 5.2 | 0.5 | 0.75 |
| 12.5 | 6.2 | 0.7 | 1.0 |
| 16 | 8.2 | 0.9 | 1.25 |
| 20 | 10.2 | 1.1 | 1.55 |
| 25 | 12.2 | 1.5 | 2.05 |
| 31.5 | 16.3 | 1.75 | 2.45 |
| 40 | 20.4 | 2.25 | 3.15 |
| 50 | 25.4 | 3 | 4.1 |
DIN 2093 series A disc springs (stiff). Series B, C and larger sizes on request. Unit: mm.
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ISO 8734 · ISO 2338 · ISO 8752
Precise location of parts, fixtures and molds; spring pins for quick press-fit.
| Pin Ø d (m6) | Common lengths |
|---|---|
| 2 | 5 – 20 |
| 3 | 6 – 30 |
| 4 | 8 – 40 |
| 5 | 10 – 50 |
| 6 | 12 – 60 |
| 8 | 14 – 80 |
| 10 | 18 – 100 |
| 12 | 22 – 100 |
| 16 | 26 – 100 |
| 20 | 40 – 100 |
Hardened dowel pins per ISO 8734 (m6). Spring pins per ISO 8752. Unit: mm.
Quote this item →| Standards | DIN · ISO · JIS · ASME |
|---|---|
| Common sizes | M3 – M36; pins Ø2 – Ø20 mm |
| Materials | Carbon steel, spring steel, stainless 304 / 316, brass |
| Surface finish | Zinc plating, black oxide, Geomet, phosphate, plain |
| Documents | CO, CQ, inspection report (on request) |
When joints face vibration or dynamic loads that spring washers or nylon nuts cannot hold. We advise the right size and material for your existing bolts.
Yes. Stack in parallel to increase load, in series to increase deflection. Share the required load and stroke and we will suggest a configuration.
Yes. We handle both metric and inch (UNC / UNF) requirements.
Send part numbers, quantities or drawings. We will get back to you to clarify specs and propose the right solution.
