The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-00-616-3049, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Esna, Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government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 | 5310-00-616-3049 |
| Primary Part Number | 68NTE048 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Esna, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Thread Series | UNF |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Material Document and Classification | QQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE NUT |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.250 INCHES IN |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 0.188 INCHES MINIMUM AND 0.218 INCHES MAXIMUM IN |
| Surface Treatment | ANODIZE NUT |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 28 |
| Material | PLASTIC POLYAMIDE NYLON LOCKING INSERT |
| Material | NICKEL ALLOY 400 NUT |
| Bearing Surface Type | FLAT |
| 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 |
|---|---|
| 68NTE048 PRIMARY | Esna, Llc (USA) |
| 203MT030P001 | Raytheon Company Dba Raytheon Co (USA) |
| Reference | Meaning |
|---|---|
| 203MT030P001 | 5/9 Secondary reference Raytheon Co Raytheon Systems Co |
| 68NTE048 | 5/9 Secondary reference Harvard Industries Inc |
| 203MT030P001 | 5/9 Secondary reference Raytheon Company Div Corp |
NSN 5310-00-616-3049 is a Nut,self-Locking,hexagon, manufactured by Esna, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-616-3049 has 2 manufacturer part numbers on file: 68NTE048 (Esna, Llc), 203MT030P001 (Raytheon Company Dba Raytheon Co).
1 possible match (shared part number, not a government interchangeability claim): 5310-00-922-9081. Verify interchangeability with system specifications before substitution.
Key specifications for 68NTE048: Width Across Flats: 0.428 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Thread Series: UNF; Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Material Document and Classification: QQ-N-281,CL A 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.