The Washer,flat, cataloged under National Stock Number 5310-00-945-8288, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers 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 | 5310-00-945-8288 |
| Primary Part Number | 65355-12129-101 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp |
| Status | ACTIVE |
| Surface Finish | 90.0 MICROINCHES ALL SURFACES |
| Surface Treatment Document and Classification | MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.185 INCHES MINIMUM AND 1.205 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-225/6 TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/4 TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 2024 OVERALL |
| Center Hole Shape Style | DEE |
| Hole Diameter | 0.657 INCHES MINIMUM AND 0.663 INCHES MAXIMUM IN |
| Thickness | 0.090 INCHES MINIMUM AND 0.093 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 |
|---|---|
| 00608 | Defense Logistics Agency Dba Defense Supply Center Philadelphia (USA) |
| 65355-12129-101 PRIMARY | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-00-945-8288 is a Washer,flat, manufactured by Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-945-8288 has 2 manufacturer part numbers on file: 00608 (Defense Logistics Agency Dba Defense Supply Center Philadelphia), 65355-12129-101 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
1 possible match (shared part number, not a government interchangeability claim): 3020-01-203-3501. Verify interchangeability with system specifications before substitution.
Key specifications for 65355-12129-101: Surface Finish: 90.0 MICROINCHES ALL SURFACES; Surface Treatment Document and Classification: MIL-A-8625,TY 1,CL 1 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.185 INCHES MINIMUM AND 1.205 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-225/6 TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OR QQ-A-250/4 TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL. 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.