The Nut,plain,hexagon, cataloged under National Stock Number 5310-01-580-3985, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Atlas Industrial Mfg Co. Government technical data includes 2 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-580-3985 |
| Primary Part Number | D-4421-5PN36 |
| Item Name | Nut,plain,hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Atlas Industrial Mfg Co |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.750 INCHES 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 |
|---|---|
| D-4421-5PN36 PRIMARY | Atlas Industrial Mfg Co (USA) |
| Reference | Meaning |
|---|---|
| D-4421-5PN36 | 5/9 Secondary reference U.S. Government activity |
NSN 5310-01-580-3985 is a Nut,plain,hexagon, manufactured by Atlas Industrial Mfg Co, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-580-3985 has 1 manufacturer part number on file: D-4421-5PN36 (Atlas Industrial Mfg Co).
Key specifications for D-4421-5PN36: Thread Direction: RIGHT-HAND; Nominal Thread Size: 0.750 INCHES IN; Part Name Assigned by Controlling Agency: NAVY SPECIAL PROJECT; End Item Identification: HEAT EXCHANGER. 2 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.