The Nut,self-Locking,double Hexagon, cataloged under National Stock Number 5310-01-184-0357, 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 4 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog.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 | 5310-01-184-0357 |
| Primary Part Number | FN22M-720 |
| Item Name | Nut,self-Locking,double Hexagon |
| FSC / FSG | 5310 / 53 — Nuts and Washers |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Lubrication | DRY FILM LUBRICANT |
| Width Across Flats | 0.750 INCHES NOMINAL IN |
| Surface Treatment Document and Classification | AMS-QQ-P-416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Temp Rating | 450.0 FAHRENHEIT MAXIMUM DEGF |
| Supplementary Features | MOLYBDENUM DISULFIDE DRY FILM LUBRICANT PER AS5272,TYPE I |
| Material Document and Classification | AMS 6322 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Size | 0.437 INCHES IN |
| Nut Height | 0.430 INCHES NOMINAL IN |
| Surface Treatment | CADMIUM OVERALL |
| Thread Class | 3B |
| Thread Quantity Per Inch | 20 |
| Material | STEEL COMP 8740 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 |
|---|---|
| FN22M-720 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| BH0074-7 | Bristol Industries, Llc (USA) |
| PBR1393-5 | Sps Technologies Llc Dba PB Fasteners Div PB Fasteners (USA) |
| HS4143-5 | The Boeing Company (USA) |
| Reference | Meaning |
|---|---|
| HS4143-5 | 5/9 Secondary reference Mcdonnell Douglas Helicopter Co Inc |
NSN 5310-01-184-0357 is a Nut,self-Locking,double Hexagon, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310, Nuts and Washers. Status: active.
NSN 5310-01-184-0357 has 4 manufacturer part numbers on file: FN22M-720 (Sps Technologies, Llc Dba PB Fasteners), BH0074-7 (Bristol Industries, Llc), PBR1393-5 (Sps Technologies Llc Dba PB Fasteners Div PB Fasteners), HS4143-5 (The Boeing Company).
Key specifications for FN22M-720: Lubrication: DRY FILM LUBRICANT; Width Across Flats: 0.750 INCHES NOMINAL IN; Surface Treatment Document and Classification: AMS-QQ-P-416 ASSN STD SINGLE TREATMENT RESPONSE OVERALL; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF). 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.