Description
1242385 NUT; NYLOCK M4 SS — BOLTON SKU 64939.
About the 1242385 Nylock Nut, M4 Stainless Steel
The 1242385 is a Bossard-referenced nylon-insert self-locking hex nut (nylock nut) in thread size M4, manufactured in stainless steel. Nylon-insert lock nuts carry a polyamide ring at the top of the nut body; as the nut is run onto the bolt thread, the insert deforms elastically around the thread and generates prevailing torque that resists loosening under vibration, without damaging the mating thread. This locking principle is standardised internationally in the DIN 985 / ISO 10511 family of prevailing-torque hex nuts with non-metallic insert, and nuts of this pattern are reusable within the limits given by the fastener manufacturer. Stainless steel construction provides corrosion resistance for assemblies exposed to humidity or outdoor service. Exact standard reference, stainless grade and property class for this part number should be confirmed against the Bossard catalogue sheet at order stage.
Key specifications
| Type | Nylon-insert self-locking hex nut (nylock) |
|---|---|
| Thread size | M4 |
| Locking feature | Polyamide (nylon) insert, prevailing torque |
| Material | Stainless steel |
| Manufacturer reference | Bossard 1242385 |
Typical applications
Nylock nuts are used throughout airframe and UAV assembly, vibration-exposed equipment mounting and MRO repair work where fasteners must resist self-loosening. They are a standard consumable in harness clamp stacks, avionics tray mounting and general mechanical assembly.
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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