The Washer,flat, cataloged under National Stock Number 5310-00-177-7570, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Regal Air, Inc.. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-177-7570 |
| Primary Part Number | 0642162-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Regal Air, Inc. |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.860 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Minimum Tensile Strength | 125000 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.441 INCHES MINIMUM AND 0.453 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 |
|---|---|
| 0642162-1 PRIMARY | Regal Air, Inc. (USA) |
| Reference | Meaning |
|---|---|
| 5340001777570 | 6/9 Informative reference only E.c.a Etablissement Central Des Approvisionnements Des Forces Armees Royales |
| 0642162-1 | 5/9 Secondary reference Cessna Aircraft Company Dba Textron Aviation |
NSN 5310-00-177-7570 is a Washer,flat, manufactured by Regal Air, Inc., classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-177-7570 has 1 manufacturer part number on file: 0642162-1 (Regal Air, Inc.).
Key specifications for 0642162-1: Surface Treatment Document and Classification: QQ-P-416 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.860 INCHES MINIMUM AND 0.880 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-18729,COND N MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.