The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-00-027-4381, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Honeywell International, Inc Div Aerospace-Tucson. Government technical data includes 13 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-027-4381 |
| Primary Part Number | 803949-1 |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Honeywell International, Inc Div Aerospace-Tucson |
| Status | ACTIVE |
| Width Across Flats | 0.373 INCHES NOMINAL IN |
| Thread Series | UNF |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Pilot Diameter | 0.268 INCHES NOMINAL IN |
| Pilot Length | 0.083 INCHES NOMINAL IN |
| Locking Feature | PREVAILING TORQUE WITH METALLIC INSERT |
| Nut Height | 0.329 INCHES NOMINAL IN |
| Nut Style | CLINCH |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL EXCEPT INSERT |
| Material | FIBER LOCKING INSERT |
| 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 |
|---|---|
| 803949-1 PRIMARY | Honeywell International, Inc Div Aerospace-Tucson (USA) |
| Reference | Meaning |
|---|---|
| 803949-1 | 5/9 Secondary reference Honeywell International Inc. Div Aerospace - Torrance |
NSN 5310-00-027-4381 is a Nut,self-Locking,clinch, manufactured by Honeywell International, Inc Div Aerospace-Tucson, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-027-4381 has 1 manufacturer part number on file: 803949-1 (Honeywell International, Inc Div Aerospace-Tucson).
1 possible match (shared part number, not a government interchangeability claim): 5962-01-184-1406. Verify interchangeability with system specifications before substitution.
Key specifications for 803949-1: Width Across Flats: 0.373 INCHES NOMINAL IN; Thread Series: UNF; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.190 INCHES IN. 13 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.