The Washer,recessed, cataloged under National Stock Number 5310-00-971-1759, 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10 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-971-1759 |
| Item Name | Washer,recessed |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Style Designator | RECESSED |
| Material Document and Classification | ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Outside Diameter | 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN |
| Material Thickness | 0.050 INCHES MINIMUM AND 0.058 INCHES MAXIMUM IN |
| Recess Diameter | 0.245 INCHES MINIMUM AND 0.255 INCHES MAXIMUM IN |
| Surface Treatment | CADMIUM OVERALL |
| Material | STEEL COMP 1020 OVERALL |
| Hole Diameter | 0.219 INCHES MINIMUM AND 0.222 INCHES MAXIMUM IN |
| Recess Angle | 46.0 DEGREES MINIMUM AND 54.0 DEGREES MAXIMUM |
| 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 |
|---|---|
| 44A28349 | 3/2 Design control — primary reference U.S. Government activity |
| 44A28349 | 5/9 Secondary reference Handley Industries,inc. |
NSN 5310-00-971-1759 is a Washer,recessed, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-971-1759: Surface Treatment Document and Classification: QQ-P-416,TY 1,CL 1 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Style Designator: RECESSED; Material Document and Classification: ASTM A108 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Outside Diameter: 0.484 INCHES MINIMUM AND 0.516 INCHES MAXIMUM IN. 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.