The Washer,flat, cataloged under National Stock Number 5310-01-155-5247, 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9 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-155-5247 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-C-576,1/2 H FED SPEC ALL MATERIAL RESPONSES OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Nondefinitive Spec/std Data | F GRADE |
| Peripheral Shape Style | ROUND |
| Material | COPPER ALLOY 110 OR COPPER ALLOY 113 OR COPPER ALLOY 114 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 | 0.093 INCHES MINIMUM AND 0.098 INCHES MAXIMUM IN |
| Thickness | 0.018 INCHES MINIMUM AND 0.024 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 |
|---|---|
| MS51936-23 | 2/2 Government specification standardization U.S. Government activity |
| FF-R-556 | 4/1 Identification reference U.S. Government activity |
NSN 5310-01-155-5247 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-01-155-5247: Overall Diameter: 0.307 INCHES MINIMUM AND 0.320 INCHES MAXIMUM IN; Material Document and Classification: QQ-C-576,1/2 H FED SPEC ALL MATERIAL RESPONSES OVERALL; Cross-Sectional Shape Style: RECTANGULAR; Nondefinitive Spec/std Data: F GRADE. 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.