The Washer,flat, cataloged under National Stock Number 5310-00-934-9565, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Microwave Engineering Corporation. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-934-9565 |
| Primary Part Number | 1266-1001 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Microwave Engineering Corporation |
| Status | ACTIVE |
| Overall Diameter | 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-A-250/11 TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | ANODIZE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | ALUMINUM ALLOY 6061 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.335 INCHES MINIMUM AND 0.340 INCHES MAXIMUM IN |
| Thickness | 0.062 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 |
|---|---|
| 1266-1001 PRIMARY | Microwave Engineering Corporation (USA) |
| Reference | Meaning |
|---|---|
| 1266-1001 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-00-934-9565 is a Washer,flat, manufactured by Microwave Engineering Corporation, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-934-9565 has 1 manufacturer part number on file: 1266-1001 (Microwave Engineering Corporation).
Key specifications for 1266-1001: Overall Diameter: 0.595 INCHES MINIMUM AND 0.605 INCHES MAXIMUM IN; Material Document and Classification: QQ-A-250/11 TEMPER T6 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Surface Treatment: ANODIZE 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.