The Nut,self-Locking,extended Washer, cataloged under National Stock Number 5310-01-194-0675, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Howmet Global Fastening Systems Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 7 commercial cross-references from 7 manufacturers, enabling identification through both NSN and commercial part number lookups. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5310-01-194-0675 |
| Primary Part Number | H50437-4 |
| Item Name | Nut,self-Locking,extended Washer |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Howmet Global Fastening Systems Inc |
| Status | CANCELLED |
| Hardness Rating | 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM |
| Thread Class | 3B |
| Thread Series | UNIFIED NATIONAL JOINT FINE (UNJF) |
| Material | STEEL COMP 8740 OR STEEL COMP 4037 OVERALL |
| Width Across Flats | 0.305 INCHES MINIMUM AND 0.313 INCHES MAXIMUM IN |
| Nominal Thread Size | 0.250 INCHES IN |
| Surface Treatment | TIN OVERALL |
| Counterbore Diameter | 0.291 INCHES MINIMUM AND 0.295 INCHES MAXIMUM NUT IN |
| Nut Counterbore Depth | 0.175 INCHES MINIMUM AND 0.185 INCHES MAXIMUM NUT IN |
| Material Document and Classification | AMS 6322 ASSN STD 1ST MATERIAL RESPONSE OR AMS 6300 ASSN STD 2ND MATERIAL RESPONSE OVERALL |
| Thread Quantity Per Inch | 28 |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Lubrication | DRY FILM LUBRICANT |
| Nut Style | HEXAGON |
| Temp Rating | 232.0 CELSIUS MAXIMUM DEGC |
| Surface Treatment Document and Classification | ASTM B545 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Washer Outside Diameter | 0.425 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| H50437-4 PRIMARY | Howmet Global Fastening Systems Inc (USA) |
| N11-4 PRIMARY | Hi-Shear Corporation (USA) |
| N11-4 PRIMARY | Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc (CAN) |
| 78456-820 | Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana (USA) |
| 78456-820 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| GN512JG4 | Northrop Grumman Systems Corporation (USA) |
| H50437-4 | Klx Aerospace Solutions II SAS (FRA) |
NSN 5310-01-194-0675 is a Nut,self-Locking,extended Washer, manufactured by Howmet Global Fastening Systems Inc, classified under FSC 5310 (No Item Name Available). Status: cancelled.
NSN 5310-01-194-0675 has 7 cross-referenced part numbers: H50437-4 (Howmet Global Fastening Systems Inc), N11-4 (Hi-Shear Corporation), N11-4 (Lisi Aerospace Canada Corp Div Hi Shear Holdings Inc), 78456-820 (Sps Technologies, Llc Dba Aerospace Fasteners Group Div Aerospace - Santa Ana), 78456-820 (Sps Technologies, Llc Dba PB Fasteners) and 2 more.
There are 3 known substitutes for 5310-01-194-0675: 5330-00-114-2857, 5310-00-185-6520, 5340-00-254-2927. Verify interchangeability with system specifications before substitution.
Key specifications for H50437-4: Hardness Rating: 39.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM; Thread Class: 3B; Thread Series: UNIFIED NATIONAL JOINT FINE (UNJF); Material: STEEL COMP 8740 OR STEEL COMP 4037 OVERALL. 19 total characteristics are documented in the Federal Logistics Information System.
NSN 5310-01-194-0675 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.