The Washer,flat, cataloged under National Stock Number 5310-01-008-1955, 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 11 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 | 5310-01-008-1955 |
| Primary Part Number | U518877 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Triumph Thermal Systems, Llc |
| Status | ACTIVE |
| Overall Diameter | 1.500 INCHES NOMINAL IN |
| Heat Treatment | AS FABRICATED |
| Material Document and Classification | SAE ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | BLACK OVERALL |
| Surface Treatment | OXIDE FILM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 321 OR STEEL COMP 347 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.320 INCHES MINIMUM AND 0.350 INCHES MAXIMUM IN |
| Thickness | 0.087 INCHES MINIMUM AND 0.095 INCHES MAXIMUM IN |
| 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 |
|---|---|
| U518877 PRIMARY | Triumph Thermal Systems, Llc (USA) |
NSN 5310-01-008-1955 is a Washer,flat, manufactured by Triumph Thermal Systems, Llc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-008-1955 has 1 manufacturer part number on file: U518877 (Triumph Thermal Systems, Llc).
Key specifications for U518877: Overall Diameter: 1.500 INCHES NOMINAL IN; Heat Treatment: AS FABRICATED; Material Document and Classification: SAE ASSN STD ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 11 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.