The Washer,flat, cataloged under National Stock Number 5310-01-160-3973, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. Government technical data includes 9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-160-3973 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 1.305 INCHES MINIMUM AND 1.342 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-C-576 FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Nondefinitive Spec/std Data | A TYPE AND 1 GRADE AND F CLASS |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 113 OR COPPER ALLOY 116 OR COPPER ALLOY 120 OR COPPER ALLOY 121 OR COPPER ALLOY 122 OR COPPER ALLOY 123 OR COPPER ALLOY 125 OR COPPER ALLOY 127 OR COPPER ALLOY 128 OR COPPER ALLOY 130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.649 INCHES MINIMUM AND 0.686 INCHES MAXIMUM IN |
| Thickness | 0.074 INCHES MINIMUM AND 0.121 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 |
| Reference | Meaning |
|---|---|
| FF-W-92 | 4/1 Identification reference U.S. Government activity |
| MS15795-520 | 5/9 Secondary reference U.S. Government activity |
| MS15795-520 | 3/2 Design control — primary reference U.S. Government activity |
NSN 5310-01-160-3973 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-160-3973: Overall Diameter: 1.305 INCHES MINIMUM AND 1.342 INCHES MAXIMUM IN; Material Document and Classification: QQ-C-576 FED SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Nondefinitive Spec/std Data: A TYPE AND 1 GRADE AND F CLASS. 9 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.