The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-435-0891, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Triumph Thermal Systems, Llc. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-435-0891 |
| Primary Part Number | U542567 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| Width Across Flats | 0.684 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | QQ-P-416,TY 1, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNF |
| Material Document and Classification | QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.438 INCHES IN |
| Nut Height | 0.234 INCHES MINIMUM AND 0.266 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Countersink Angle | 90.0 DEGREES NOMINAL FIRST END |
| Nut Style | HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 1137 AND STEEL COMP 1141 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 |
|---|---|
| U542567 PRIMARY | Triumph Thermal Systems, Llc (USA) |
NSN 5310-01-435-0891 is a Nut,plain,hexagon, manufactured by Triumph Thermal Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-435-0891 has 1 manufacturer part number on file: U542567 (Triumph Thermal Systems, Llc).
Key specifications for U542567: Width Across Flats: 0.684 INCHES MINIMUM AND 0.691 INCHES MAXIMUM IN; Surface Treatment Document and Classification: QQ-P-416,TY 1, CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNF; Material Document and Classification: QQ-S-637 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.