The Washer,flat, cataloged under National Stock Number 5310-01-465-3725, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is The Boeing Company. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 4 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5310-01-465-3725 |
| Primary Part Number | HS306-519L |
| Item Name | Washer,flat |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | The Boeing Company |
| Status | ACTIVE |
| Overall Diameter | 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN |
| Hardness Rating | 98.0 ROCKWELL M MINIMUM AND 113.0 ROCKWELL M MAXIMUM |
| Material Document and Classification | L-P-513,TYPE PBE-P MIL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Cross-Sectional Shape Style | RECTANGULAR |
| Color | NATURAL OVERALL |
| Minimum Tensile Strength | 8850 POUNDS PER SQUARE INCH LBS |
| Peripheral Shape Style | ROUND |
| Material | PLASTIC PHENOLIC OVERALL |
| Center Hole Shape Style | ROUND |
| Hole Diameter | 0.169 INCHES MINIMUM AND 0.180 INCHES MAXIMUM IN |
| Thickness | 0.016 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 |
| Part Number | Manufacturer |
|---|---|
| HS306-519L PRIMARY | The Boeing Company (USA) |
| HS306-519L | Moeller Manufacturing & Supply, Llc (USA) |
| HS306-519L | Pac Zonamatic Inc (USA) |
| HS306-519L | Anillo Industries Llc (USA) |
| Reference | Meaning |
|---|---|
| HS306-519L | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
| HS306-519L | 5/2 Secondary reference U.S. Government activity |
NSN 5310-01-465-3725 is a Washer,flat, manufactured by The Boeing Company, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-465-3725 has 4 manufacturer part numbers on file: HS306-519L (The Boeing Company), HS306-519L (Moeller Manufacturing & Supply, Llc), HS306-519L (Pac Zonamatic Inc), HS306-519L (Anillo Industries Llc).
Key specifications for HS306-519L: Overall Diameter: 0.420 INCHES MINIMUM AND 0.440 INCHES MAXIMUM IN; Hardness Rating: 98.0 ROCKWELL M MINIMUM AND 113.0 ROCKWELL M MAXIMUM; Material Document and Classification: L-P-513,TYPE PBE-P MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Cross-Sectional Shape Style: RECTANGULAR. 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.