The Washer,flat, cataloged under National Stock Number 5310-01-277-4368, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-277-4368 |
| Primary Part Number | 64A98B125-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier |
| Status | ACTIVE |
| Overall Diameter | 1.250 INCHES NOMINAL IN |
| Material Document and Classification | QQ-B-613,COMP 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | YELLOW OVERALL |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 260 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.740 INCHES MINIMUM AND 0.760 INCHES MAXIMUM IN |
| Thickness | 0.120 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 |
|---|---|
| 64A98B125-1 PRIMARY | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
NSN 5310-01-277-4368 is a Washer,flat, manufactured by Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-277-4368 has 1 manufacturer part number on file: 64A98B125-1 (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier).
Key specifications for 64A98B125-1: Overall Diameter: 1.250 INCHES NOMINAL IN; Material Document and Classification: QQ-B-613,COMP 2 FED SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Color: YELLOW 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.