Description
ISO 10511 M10-A4 Nut, Steel, Prevailing Torque Type Hexagon — BOLTON SKU 56560.
About the ISO 10511 M10-A4 Nut, Steel, Prevailing Torque
The ISO 10511 M10-A4 Nut Steel Prevailing torque hexagon nut is manufactured to ISO 10511, which specifies prevailing torque hexagon thin nuts with a non-metallic insert in steel and stainless steel, metric coarse pitch, sizes M3 to M39. This item is the M10 coarse-thread size in stainless steel grade A4 — the molybdenum-bearing austenitic fastener grade of ISO 3506 selected for improved corrosion resistance over A2. The nut’s polymer insert deforms elastically over the bolt thread and generates a prevailing (running) torque that resists rotation loosening in service; the locking action does not depend on clamp load, so it remains effective even if the joint relaxes. Being a thin-style nut, its overall height and load capability are lower than a regular ISO prevailing torque nut, which the standard flags as a design consideration rather than a defect.
Key specifications
| Standard | ISO 10511 |
|---|---|
| Type | Prevailing torque hexagon thin nut, non-metallic insert |
| Thread size | M10, metric coarse pitch |
| Material | Stainless steel, grade A4 (ISO 3506) |
| Product grade | A (sizes up to M16) |
| Locking feature | Non-metallic (polymer) insert |
Typical applications
M10 is a common fixing size across equipment frames, brackets and machinery guards, and the A4 grade makes this locknut suitable where washdown, salt spray or chemical exposure would corrode plated steel. It is typically fitted where an M10 joint sees vibration — pumps, fans, vehicle-mounted equipment and structural fixings on mobile or deployable assets.
Supplied by BOLTON Technical Equipment Supplies against request for quotation. Add this item to your RFQ basket to request pricing, lead time and documentation requirements (e.g. CoC, datasheets or test reports where applicable).
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