Description
1397176 NUT HEX PREVAILING TORQUE THIN M3 SS A4 — BOLTON SKU 55151.
About the 1397176 Hex Nut, M3 Thin Prevailing Torque
This item is described by its designation as a prevailing-torque hexagon nut in the thin, or low, form, with an M3 thread, supplied in A4 grade stainless steel. A prevailing-torque nut resists loosening by mechanical friction that is present before the nut seats, rather than relying on clamp load alone or on a chemical thread locker, which is why this class of nut is specified on joints subject to vibration. The thin form is used where axial space is restricted and full nut height cannot be accommodated. A4 is the molybdenum-alloyed austenitic stainless steel group defined for fasteners in ISO 3506-2, selected where corrosion resistance in marine, humid or chemically exposed conditions is required. Bossard catalogues prevailing-torque thin hexagon nuts in both all-metal and polyamide-insert constructions; the designation for this item does not state which applies.
Key specifications
| Fastener type | Prevailing-torque (self-locking) hexagon nut |
|---|---|
| Form | Thin / low type |
| Thread | M3 |
| Material | Stainless steel, A4 grade |
| Material standard | ISO 3506-2 austenitic, molybdenum-alloyed group |
| Locking action | Prevailing torque, mechanical friction; no thread locker required |
Typical applications
Thin prevailing-torque nuts are used across airframe and vehicle secondary structure, avionics and electronics enclosures, bracketry and panel assemblies where a vibration-resistant fastening is needed in restricted space. The A4 material choice suits externally exposed, marine and washdown environments. Assembly and MRO workshops hold them in quantity as consumable hardware for build and rework.
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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