The Washer,flat, cataloged under National Stock Number 5310-01-041-4652, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 10 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-041-4652 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-81562 TY 2,CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-81562,TY 2,CL 3 MIL SPEC 2ND TREATMENT RESPONSE AND MIL-C-81562,TY 2,CL 3 MIL SPEC 3RD TREATMENT RESPONSE OR MIL-C-81562,TY 2 MIL SPEC 4TH TREATMENT RESPONSE OR QQ-Z-325,TY 2 MIL SPEC 4TH TREATMENT RESPONSE OVERALL |
| Overall Diameter | 2.000 INCHES NOMINAL IN |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OR TIN AND CADMIUM OR ZINC OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.812 INCHES NOMINAL IN |
| Thickness | 0.112 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 |
| Reference | Meaning |
|---|---|
| B-41331PCJ5 | 5/9 Secondary reference U.S. Government activity |
| W03-0413310J5 | 3/9 Design control — primary reference U.S. Government activity |
| L23-041331-0J5 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-041-4652 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-041-4652: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 3 FED SPEC 1ST TREATMENT RESPONSE OR MIL-C-81562 TY 2,CL 3 MIL SPEC 1ST TREATMENT RESPONSE OR MIL-C-81562,TY 2,CL 3 MIL SPEC 2ND TREATMENT RESPONSE AND MIL-C-81562,TY 2,CL 3 MIL SPEC 3RD TREATMENT RESPONSE OR MIL-C-81562,TY 2 MIL SPEC 4TH TREATMENT RESPONSE OR QQ-Z-325,TY 2 MIL SPEC 4TH TREATMENT RESPONSE OVERALL; Overall Diameter: 2.000 INCHES NOMINAL IN; Material Document and Classification: 66 FED 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.