The Washer,flat, cataloged under National Stock Number 5310-00-599-3480, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Carrier Corp. Government technical data includes 9 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through both NSN and commercial part number lookups. 6 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-599-3480 |
| Primary Part Number | 5H40-1621 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Carrier Corp |
| Status | ACTIVE |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Material Document and Classification | HH-P-46 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Minimum Tensile Strength | 1800 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | ASBESTOS OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.500 INCHES NOMINAL IN |
| Thickness | 0.070 INCHES NOMINAL 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 |
|---|---|
| 5H40-1621 PRIMARY | Carrier Corp (USA) |
| Reference | Meaning |
|---|---|
| N400-1PC5H40-1621 | 5/9 Secondary reference Carrier Corp |
| N9000-1ALT1PC2D | 5/9 Secondary reference Carrier Corp |
| 52129-5901-998632ALT3PC54401621 | 5/2 Secondary reference U.S. Government activity |
| 52129-5901-998641ALT1PC2P | 5/2 Secondary reference U.S. Government activity |
| 54MAD1343N3REVCPC13 | 5/9 Secondary reference Carrier Corp |
| 571-3801-1444715REVAPC112 | 5/2 Secondary reference U.S. Government activity |
NSN 5310-00-599-3480 is a Washer,flat, manufactured by Carrier Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-599-3480 has 1 manufacturer part number on file: 5H40-1621 (Carrier Corp).
Key specifications for 5H40-1621: Overall Diameter: 2.000 INCHES NOMINAL IN; Material Document and Classification: HH-P-46 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Minimum Tensile Strength: 1800 POUNDS PER SQUARE INCH LBS. 9 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.