The Washer,flat, cataloged under National Stock Number 5310-01-269-9128, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Textron Systems Corporation Dba Textron Systems Corp. Government technical data includes 10 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 | 5310-01-269-9128 |
| Primary Part Number | 126-52781-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Textron Systems Corporation Dba Textron Systems Corp |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35,TY 4 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 1.190 INCHES MINIMUM AND 1.200 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 303 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.760 INCHES MINIMUM AND 0.775 INCHES MAXIMUM IN |
| Thickness | 0.125 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 |
|---|---|
| 126-52781-1 PRIMARY | Textron Systems Corporation Dba Textron Systems Corp (USA) |
NSN 5310-01-269-9128 is a Washer,flat, manufactured by Textron Systems Corporation Dba Textron Systems Corp, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-269-9128 has 1 manufacturer part number on file: 126-52781-1 (Textron Systems Corporation Dba Textron Systems Corp).
Key specifications for 126-52781-1: Surface Treatment Document and Classification: QQ-P-35,TY 4 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 1.190 INCHES MINIMUM AND 1.200 INCHES MAXIMUM IN; Material Document and Classification: ASTM A582 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 10 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.