The Washer,flat, cataloged under National Stock Number 5310-01-258-6044, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. 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. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-258-6044 |
| Primary Part Number | S0111L9F0458 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN |
| Heat Treatment | COLD ROLLED |
| Material Document and Classification | QQ-S-698,COND 4 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 1008 OR STEEL COMP 1009 OR STEEL COMP 1015 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.140 INCHES MINIMUM AND 0.150 INCHES MAXIMUM IN |
| Thickness | 0.032 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 |
|---|---|
| S0111L9F0458 PRIMARY | The Boeing Company (USA) |
NSN 5310-01-258-6044 is a Washer,flat, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-258-6044 has 1 manufacturer part number on file: S0111L9F0458 (The Boeing Company).
Key specifications for S0111L9F0458: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.438 INCHES MINIMUM AND 0.458 INCHES MAXIMUM IN; Heat Treatment: COLD ROLLED; Material Document and Classification: QQ-S-698,COND 4 FED SPEC ALL MATERIAL RESPONSES OVERALL. 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.