The Washer,recessed, cataloged under National Stock Number 5310-01-342-3699, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 11 specifications, cited from the U.S. Government catalog. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-342-3699 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM |
| Style Designator | RECESSED |
| Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.460 INCHES MINIMUM AND 0.470 INCHES MAXIMUM IN |
| Material Thickness | 0.057 INCHES MINIMUM AND 0.069 INCHES MAXIMUM IN |
| Recess Diameter | 0.310 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Material | IRON ALLOY 660 OVERALL |
| Hole Diameter | 0.251 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Recess Angle | 90.0 DEGREES NOMINAL |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | N |
| Reference | Meaning |
|---|---|
| 4D0033C4C | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-342-3699 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-342-3699: Surface Treatment Document and Classification: QQ-P-416,TY 2,CL 2 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Hardness Rating: 36.0 ROCKWELL C MINIMUM AND 45.0 ROCKWELL C MAXIMUM; Style Designator: RECESSED; Material Document and Classification: AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE OR AMS 5525 ASSN STD SINGLE MATERIAL RESPONSE 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.