The Nut,plain,round, cataloged under National Stock Number 5310-00-405-5534, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Mine Safety Appliances Company. Government technical data includes 14 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 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 | 5310-00-405-5534 |
| Primary Part Number | 83731 |
| Item Name | Nut,plain,round |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Mine Safety Appliances Company |
| Status | ACTIVE |
| Thread Series | UNF |
| Drive Point Width | 0.062 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.190 INCHES IN |
| Nut Diameter | 0.562 INCHES NOMINAL IN |
| Drive Point Depth | 0.109 INCHES NOMINAL IN |
| Undercut Thickness | 0.100 INCHES NOMINAL IN |
| Nut Thickness | 0.193 INCHES NOMINAL IN |
| Small End Diameter | 0.281 INCHES NOMINAL IN |
| Drive Point Quantity | 2 |
| Nut Style | ROUND |
| Thread Class | 2B |
| Thread Quantity Per Inch | 32 |
| Material | COPPER ALLOY OVERALL |
| 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 |
|---|---|
| 83731 PRIMARY | Mine Safety Appliances Company (USA) |
NSN 5310-00-405-5534 is a Nut,plain,round, manufactured by Mine Safety Appliances Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-405-5534 has 1 manufacturer part number on file: 83731 (Mine Safety Appliances Company).
1 possible match (shared part number, not a government interchangeability claim): 5950-00-623-3028. Verify interchangeability with system specifications before substitution.
Key specifications for 83731: Thread Series: UNF; Drive Point Width: 0.062 INCHES NOMINAL IN; Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.190 INCHES IN. 14 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.