The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-813-5124, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Nylok Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-813-5124 |
| Primary Part Number | S8025 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Nylok Llc |
| Status | ACTIVE |
| Width Across Flats | 0.220 INCHES NOMINAL IN |
| Thread Series | UNS |
| Thread Pitch Diameters | +0.1174 TO 0.1196 INCHES IN |
| Material Document and Classification | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Nut Counterbore Depth | 0.030 INCHES MINIMUM AND 0.035 INCHES MAXIMUM NUT IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.125 INCHES IN |
| Counterbore Diameter | 0.126 INCHES MINIMUM AND 0.130 INCHES MAXIMUM NUT IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.157 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Quantity Per Inch | 64 |
| Material | STEEL COMP 1117 NUT |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Bearing Surface Type | CHAMFERED |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| S8025 PRIMARY | Nylok Llc (USA) |
| Reference | Meaning |
|---|---|
| 137859-01 | 7/2 Vendor item drawing reference Ge Aviation Systems Llc |
NSN 5310-00-813-5124 is a Nut,self-Locking,hexagon, manufactured by Nylok Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-813-5124 has 1 manufacturer part number on file: S8025 (Nylok Llc).
Key specifications for S8025: Width Across Flats: 0.220 INCHES NOMINAL IN; Thread Series: UNS; Thread Pitch Diameters: +0.1174 TO 0.1196 INCHES IN; Material Document and Classification: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE NUT. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.