The Nut,self-Locking,castellated,hex, cataloged under National Stock Number 5310-01-031-6798, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 10 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-031-6798 |
| Primary Part Number | 191999 |
| Item Name | Nut,self-Locking,castellated,hex |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Surface Treatment | CADMIUM OR ZINC OVERALL |
| Width Across Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Nut Height | 0.312 INCHES NOMINAL IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Thread Series | UNF |
| Nut Style | CASTELLATED, HEXAGON |
| Thread Quantity Per Inch | 28 |
| Bearing Surface Type | FLAT |
| Thread Direction | RIGHT-HAND |
| Thread Class | 3B |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 191999 | Army Weapons Command Attn Amswe-Ree-S (USA) |
NSN 5310-01-031-6798 is a Nut,self-Locking,castellated,hex, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-01-031-6798 has 1 cross-referenced part number: 191999 (Army Weapons Command Attn Amswe-Ree-S).
There is 1 known substitute for 5310-01-031-6798: 2520-00-846-0181. Verify interchangeability with system specifications before substitution.
Key specifications for 191999: Surface Treatment: CADMIUM OR ZINC OVERALL; Width Across Flats: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Nut Height: 0.312 INCHES NOMINAL IN; Nominal Thread Size: 0.250 INCHES IN. 10 total characteristics are documented in the Federal Logistics Information System.