The Nut,self-Locking,hexagon, cataloged under National Stock Number 5310-01-443-5558, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carver Pump Company. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-443-5558 |
| Primary Part Number | 544-0762-085 |
| Item Name | Nut,self-Locking,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carver Pump Company |
| Status | ACTIVE |
| Width Across Flats | 1.427 INCHES MINIMUM AND 1.446 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Temp Rating | 250.0 FAHRENHEIT NOMINAL DEGF |
| Hardness Rating | 80.0 ROCKWELL B NOMINAL |
| Material Document and Classification | QQ-N-281, CL A,B MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.875 INCHES IN |
| Specification/standard Data | 81349-MIL-N-2507 GOVERNMENT SPECIFICATION |
| Locking Feature | PREVAILING TORQUE WITH NONMETALLIC INSERT |
| Nut Height | 1.110 INCHES MINIMUM AND 1.140 INCHES MAXIMUM IN |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 9 |
| Material | NICKEL ALLOY R-405 OR NICKEL ALLOY 400 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 |
|---|---|
| 544-0762-085 PRIMARY | Carver Pump Company (USA) |
| Reference | Meaning |
|---|---|
| 999-712S-A-002 ITEM N0.73 | 3/9 Design control — primary reference Carver Pump Company |
NSN 5310-01-443-5558 is a Nut,self-Locking,hexagon, manufactured by Carver Pump Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-443-5558 has 1 manufacturer part number on file: 544-0762-085 (Carver Pump Company).
Key specifications for 544-0762-085: Width Across Flats: 1.427 INCHES MINIMUM AND 1.446 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL COARSE (UNC); Temp Rating: 250.0 FAHRENHEIT NOMINAL DEGF; Hardness Rating: 80.0 ROCKWELL B NOMINAL. 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.