The Nut,plain,extended Washer,double, cataloged under National Stock Number 5310-01-057-3103, is classified within Federal Supply Class 5310 (Nuts and Washers) of the Hardware and Abrasives group. The manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 11 specifications, cited from the U.S. Government catalog. The record lists 3 manufacturer part numbers 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-057-3103 |
| Primary Part Number | 74384M14 |
| Item Name | Nut,plain,extended Washer,double |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Washer Outside Diameter | 1.438 INCHES MAXIMUM IN |
| Width Across Flats | 1.052 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Washer Thickness | 0.200 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Size | 0.875 INCHES IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | DOUBLE HEXAGON |
| Thread Class | 3B |
| Thread Quantity Per Inch | 14 |
| Material | NICKEL ALLOY 718 OVERALL |
| 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 |
|---|---|
| 74384-14M | Sps Technologies, Llc Dba PB Fasteners (USA) |
| ST3M612C14M | The Boeing Company Div Defense (USA) |
| 74384M14 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 11572-14 | 5/9 Secondary reference Harvard Industries Inc |
NSN 5310-01-057-3103 is a Nut,plain,extended Washer,double, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-057-3103 has 3 manufacturer part numbers on file: 74384-14M (Sps Technologies, Llc Dba PB Fasteners), ST3M612C14M (The Boeing Company Div Defense), 74384M14 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 74384M14: Overall Height: 0.958 INCHES MAXIMUM IN; Washer Outside Diameter: 1.438 INCHES MAXIMUM IN; Width Across Flats: 1.052 INCHES MINIMUM AND 1.065 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 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.