The Washer,flat, cataloged under National Stock Number 5310-01-281-6502, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Beta Shim Co. Dba Beta Shim Co Div Beta Shim Company. Government technical data includes 8 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-281-6502 |
| Primary Part Number | 65070-20303-106 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Beta Shim Co. Dba Beta Shim Co Div Beta Shim Company |
| Status | ACTIVE |
| Overall Diameter | 2.500 INCHES NOMINAL IN |
| Material Document and Classification | QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 230 OR COPPER ALLOY 240 OR COPPER ALLOY 260 OR COPPER ALLOY 268 OR COPPER ALLOY 342 OR COPPER ALLOY 353 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 1.344 INCHES NOMINAL IN |
| Thickness | 0.063 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 |
|---|---|
| 65070-20303-106 PRIMARY | Beta Shim Co. Dba Beta Shim Co Div Beta Shim Company (USA) |
| 65070-20303-106 | Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp (USA) |
NSN 5310-01-281-6502 is a Washer,flat, manufactured by Beta Shim Co. Dba Beta Shim Co Div Beta Shim Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-281-6502 has 2 manufacturer part numbers on file: 65070-20303-106 (Beta Shim Co. Dba Beta Shim Co Div Beta Shim Company), 65070-20303-106 (Sikorsky Aircraft Corporation Dba Sikorsky Aircraft Corp).
Key specifications for 65070-20303-106: Overall Diameter: 2.500 INCHES NOMINAL IN; Material Document and Classification: QQ-B-613 FED SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Peripheral Shape Style: ROUND. 8 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.