The Washer,flat, cataloged under National Stock Number 5310-00-550-0159, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Us Army Aviation and Missile Command. 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through both NSN and commercial part number lookups. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-550-0159 |
| Primary Part Number | 7610299 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Us Army Aviation and Missile Command |
| Status | ACTIVE |
| Overall Diameter | 0.281 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-698,CONDITION HRCQ FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.147 INCHES MINIMUM AND 0.157 INCHES MAXIMUM IN |
| Thickness | 0.022 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 |
|---|---|
| 7610299 | Us Army Aviation and Missile Command (USA) |
| Reference | Meaning |
|---|---|
| P386579 | 5/9 Secondary reference Lucent Technologies Inc Dba Federal Marketing Group |
| P386579 | 3/9 Design control — primary reference American Telephone and Telegraph Co |
| P386579 | C/1 Advisory reference — outside the item-of-supply concept Lucent Technologies Inc Corporate Headquarters |
NSN 5310-00-550-0159 is a Washer,flat, manufactured by Us Army Aviation and Missile Command, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-550-0159 has 1 manufacturer part number on file: 7610299 (Us Army Aviation and Missile Command).
Key specifications for 7610299: Overall Diameter: 0.281 INCHES MINIMUM AND 0.291 INCHES MAXIMUM IN; Material Document and Classification: QQ-S-698,CONDITION HRCQ FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ZINC OVERALL. 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.