The Washer,flat, cataloged under National Stock Number 5310-01-030-8418, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Huck International, Inc. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-030-8418 |
| Primary Part Number | D791785 |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Huck International, Inc |
| Status | ACTIVE |
| Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL |
| Overall Diameter | 0.340 INCHES MINIMUM AND 0.346 INCHES MAXIMUM IN |
| Material Document and Classification | MIL-S-5059,HARD FINISH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Surface Treatment | PASSIVATE OVERALL |
| Peripheral Shape Style | ROUND |
| Material | STEEL COMP 301 OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.222 INCHES MINIMUM AND 0.226 INCHES MAXIMUM IN |
| Thickness | 0.019 INCHES MINIMUM AND 0.025 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 |
| Part Number | Manufacturer |
|---|---|
| D791785 | Huck International, Inc. Div Huck Products Division (USA) |
| D791785 PRIMARY | Huck International, Inc (USA) |
| Reference | Meaning |
|---|---|
| 993336-7 | 7/2 Vendor item drawing reference U.S. Government activity |
| D791785 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-030-8418 is a Washer,flat, manufactured by Huck International, Inc, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-030-8418 has 2 manufacturer part numbers on file: D791785 (Huck International, Inc. Div Huck Products Division), D791785 (Huck International, Inc).
Key specifications for D791785: Surface Treatment Document and Classification: QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE OVERALL; Overall Diameter: 0.340 INCHES MINIMUM AND 0.346 INCHES MAXIMUM IN; Material Document and Classification: MIL-S-5059,HARD FINISH MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.