The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-521-1025, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Naval Ship Systems Command. Government technical data includes 11 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-521-1025 |
| Primary Part Number | 803-1385637-05X-11 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Naval Ship Systems Command |
| Status | ACTIVE |
| Material | NICKEL ALLOY OVERALL |
| Material Document and Classification | ASTM-B164-2003 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Class | 2B |
| Nominal Thread Size | 1.000 INCHES IN |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Width Across Flats | 1.625 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 8 |
| Nut Height | 0.563 INCHES NOMINAL IN |
| Bearing Surface Type | FLAT |
| Nut Style | HEXAGON |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 999-78-5-9 | Pima Valve, Llc (USA) |
| 999-78-5-9 | Hunt Valve Company, Inc. (USA) |
| 1385637 | Naval Ship Systems Command (USA) |
| 803-1385637-05X-11 PRIMARY | Naval Ship Systems Command (USA) |
NSN 5310-01-521-1025 is a Nut,plain,hexagon, manufactured by Naval Ship Systems Command, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-521-1025 has 4 cross-referenced part numbers: 999-78-5-9 (Pima Valve, Llc), 999-78-5-9 (Hunt Valve Company, Inc.), 1385637 (Naval Ship Systems Command), 803-1385637-05X-11 (Naval Ship Systems Command).
There are 11 known substitutes for 5310-01-521-1025: 4820-00-058-3630, 4820-00-878-4325, 4820-01-072-1204 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 803-1385637-05X-11: Material: NICKEL ALLOY OVERALL; Material Document and Classification: ASTM-B164-2003 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Thread Class: 2B; Nominal Thread Size: 1.000 INCHES IN. 12 total characteristics are documented in the Federal Logistics Information System.