The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-894-4990, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Meggitt Aircraft Braking Systems Corporation. Government technical data includes 12 specifications, cited from the U.S. Government catalog. The record lists 4 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-00-894-4990 |
| Primary Part Number | GYN165 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Meggitt Aircraft Braking Systems Corporation |
| Status | ACTIVE |
| Width Across Flats | 0.502 INCHES NOMINAL IN |
| Thread Series | UNF |
| Temp Rating | 500.0 FAHRENHEIT NOMINAL DEGF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Nut Height | 0.343 INCHES NOMINAL IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 24 |
| Material | STEEL OVERALL |
| 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 |
|---|---|
| GYN165 | Mills / Sterling Aerospace, Inc (CAN) |
| GYN165 | Sps Technologies, Llc Dba PB Fasteners (USA) |
| NR028202222 | Airbus Helicopters (ets De Marignane) (FRA) |
| GYN165 PRIMARY | Meggitt Aircraft Braking Systems Corporation (USA) |
| Reference | Meaning |
|---|---|
| GYN165 | 5/9 Secondary reference Goodyear Tire and Rubber Co the |
NSN 5310-00-894-4990 is a Nut,self-Locking,hexagon, manufactured by Meggitt Aircraft Braking Systems Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-894-4990 has 4 manufacturer part numbers on file: GYN165 (Mills / Sterling Aerospace, Inc), GYN165 (Sps Technologies, Llc Dba PB Fasteners), NR028202222 (Airbus Helicopters (ets De Marignane)), GYN165 (Meggitt Aircraft Braking Systems Corporation).
Key specifications for GYN165: Width Across Flats: 0.502 INCHES NOMINAL IN; Thread Series: UNF; Temp Rating: 500.0 FAHRENHEIT NOMINAL DEGF; Thread Direction: RIGHT-HAND. 12 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.