The Washer,flat, cataloged under National Stock Number 5310-00-340-6019, 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9 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-00-340-6019 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Status | ACTIVE |
| Overall Diameter | 0.8170 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM IN |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM |
| Material Document and Classification | QQ-S-624 FED SPEC 1ST MATERIAL RESPONSE OR MIL-T-6736 COND N MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6371 ASSN STD 3RD MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 4130 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.450 INCHES NOMINAL IN |
| Thickness | 0.118 INCHES MINIMUM AND 0.122 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 |
|---|---|
| 31164-2310 | C/1 Advisory reference — outside the item-of-supply concept Safran Power Usa Llc |
| 31164-2310 | 3/9 Design control — primary reference Lucas Aerospace Power Equipment Corporation |
| 8637281 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-00-340-6019 is a Washer,flat, classified under FSC 5310, Nuts and Washers. Status: active.
Key specifications for 5310-00-340-6019: Overall Diameter: 0.8170 INCHES MINIMUM AND 0.8175 INCHES MAXIMUM IN; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 36.0 ROCKWELL C MAXIMUM; Material Document and Classification: QQ-S-624 FED SPEC 1ST MATERIAL RESPONSE OR MIL-T-6736 COND N MIL SPEC 2ND MATERIAL RESPONSE OR AMS 6371 ASSN STD 3RD MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.