The Washer,flat, cataloged under National Stock Number 5310-00-486-1046, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Parker-Hannifin Corporation Dba Pneutronics. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-486-1046 |
| Primary Part Number | 7723521-1 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Parker-Hannifin Corporation Dba Pneutronics |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-C-320 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.625 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 COLD ROLLED FED SPEC 2ND MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CHROMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.191 INCHES MINIMUM AND 0.199 INCHES MAXIMUM IN |
| Thickness | 0.028 INCHES MINIMUM AND 0.036 INCHES MAXIMUM 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 |
|---|---|
| 7723521-1 PRIMARY | Parker-Hannifin Corporation Dba Pneutronics (USA) |
| Reference | Meaning |
|---|---|
| 7723521-1 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5310-00-486-1046 is a Washer,flat, manufactured by Parker-Hannifin Corporation Dba Pneutronics, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-00-486-1046 has 1 manufacturer part number on file: 7723521-1 (Parker-Hannifin Corporation Dba Pneutronics).
Key specifications for 7723521-1: Surface Treatment Document and Classification: QQ-C-320 CLASS 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.625 INCHES MINIMUM AND 0.665 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-7952 MIL SPEC 1ST MATERIAL RESPONSE OR QQ-S-698 COLD ROLLED FED SPEC 2ND 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.