The Nut,plain,castellated,double Hex, cataloged under National Stock Number 5310-01-044-1603, 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 13 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-01-044-1603 |
| Primary Part Number | 78069M5 |
| Item Name | Nut,plain,castellated,double Hex |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANTDRY FILM LUBRICANT |
| Width Across Flats | 0.482 INCHES MINIMUM AND 0.482 INCHES MINIMUM AND 0.502 INCHES MAXIMUM0.502 INCHES MAXIMUM IN |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material Document and Classification | AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HANDRIGHT-HAND |
| Nominal Thread Size | 0.312 INCHES0.312 INCHES IN |
| Nut Height | 0.303 INCHES MAXIMUM0.303 INCHES MAXIMUM IN |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | CASTELLATED, DOUBLE HEXAGONCASTELLATED, DOUBLE HEXAGON |
| Thread Class | 3B3B |
| Thread Quantity Per Inch | 2424 |
| Material | STEEL OVERALL |
| Bearing Surface Type | CHAMFEREDCHAMFERED |
| 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 |
|---|---|
| 78069M5 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| Reference | Meaning |
|---|---|
| 13134-5 | 5/9 Secondary reference Harvard Industries Inc |
| ST3M524-5ME | 7/2 Vendor item drawing reference The Boeing Company Div Defense |
NSN 5310-01-044-1603 is a Nut,plain,castellated,double Hex, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-044-1603 has 1 manufacturer part number on file: 78069M5 (Sps Technologies, Llc Dba PB Fasteners).
Key specifications for 78069M5: Lubrication: DRY FILM LUBRICANTDRY FILM LUBRICANT; Width Across Flats: 0.482 INCHES MINIMUM AND 0.482 INCHES MINIMUM AND 0.502 INCHES MAXIMUM0.502 INCHES MAXIMUM IN; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF)UNIFIED NATIONAL JOINT FINE (UNJF); Material Document and Classification: AMS 5662 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 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.