The Washer,flat, cataloged under National Stock Number 5310-01-485-3677, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Airbus Helicopters Uk Ltd. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-485-3677 |
| Primary Part Number | NAS1252-4H |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Airbus Helicopters Uk Ltd |
| Status | ACTIVE |
| Surface Treatment Document and Classification | MIL-A-8625,TYPE II CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-250/12,7075-T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Specification/standard Data | 80205-NAS1252 PROFESSIONAL/INDUSTRIAL ASSOCIATION STANDARD |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 7075 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.115 INCHES MINIMUM AND 0.135 INCHES MAXIMUM IN |
| Thickness | 0.057 INCHES MINIMUM AND 0.068 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 |
|---|---|
| NAS1252-4H | Airbus Helicopters Uk Ltd (GBR) |
| Reference | Meaning |
|---|---|
| NAS1252-4H | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-485-3677 is a Washer,flat, manufactured by Airbus Helicopters Uk Ltd, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-485-3677 has 1 manufacturer part number on file: NAS1252-4H (Airbus Helicopters Uk Ltd).
Key specifications for NAS1252-4H: Surface Treatment Document and Classification: MIL-A-8625,TYPE II CLASS 2 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.307 INCHES MINIMUM AND 0.332 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/12,7075-T6 FED SPEC SINGLE MATERIAL RESPONSE 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.