The Washer,flat, cataloged under National Stock Number 5310-00-077-2114, 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11 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-077-2114 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Center Hole Width | 0.190 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN |
| Center Hole Length | 0.440 INCHES NOMINAL IN |
| Overall Diameter | 0.620 INCHES NOMINAL IN |
| Heat Treatment | NORMALIZED |
| Material Document and Classification | MIL-S-18729 MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | CADMIUM OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ELLIPTICAL |
| Thickness | 0.063 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 |
|---|---|
| 204-060-927-001 | 5/9 Secondary reference U.S. Government activity |
| 204-060-927-1-12834 | 5/9 Secondary reference Meramec Metal Stamping Co |
| 204-060-927-1 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-00-077-2114 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-077-2114: Center Hole Width: 0.190 INCHES MINIMUM AND 0.205 INCHES MAXIMUM IN; Center Hole Length: 0.440 INCHES NOMINAL IN; Overall Diameter: 0.620 INCHES NOMINAL IN; Heat Treatment: NORMALIZED. 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.