The Nut,self-Locking,clinch, cataloged under National Stock Number 5310-00-721-5521, is classified within Federal Supply Class 5310 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Sps Technologies, Llc Dba PB Fasteners. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 6 manufacturers, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-721-5521 |
| Primary Part Number | 50FP2-440 |
| Item Name | Nut,self-Locking,clinch |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Counterbore Depth | 0.075 INCHES NOMINAL NUT IN |
| Counterbore Diameter | 0.139 INCHES MINIMUM AND 0.144 INCHES MAXIMUM NUT IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Nut Height | 0.215 INCHES MINIMUM AND 0.245 INCHES MAXIMUM IN |
| Thread Series | UNJC |
| Thread Quantity Per Inch | 40 |
| Nut Style | CLINCH |
| Temp Rating | 450.0 FAHRENHEIT NOMINAL DEGF |
| Nominal Thread Size | 0.112 INCHES IN |
| Width Across Flats | 0.243 INCHES MINIMUM AND 0.251 INCHES MAXIMUM IN |
| Pilot Length | 0.085 INCHES NOMINAL IN |
| Thread Class | 3B |
| Thread Direction | RIGHT-HAND |
| Pilot Diameter | 0.187 INCHES MINIMUM AND 0.191 INCHES MAXIMUM IN |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 81102 | Federal Screw Products, Inc. (USA) |
| 1076-59-2 | Bae Systems Information and Electronic Systems Integration Inc. (USA) |
| 200AS104-4B085CR | Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier (USA) |
| 7007-1 | The Dewey Electronics Corporation Div Pitometer Log Division (USA) |
| 107B8214P1 | Bae Systems Controls Inc. (USA) |
| 50FP2-440 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
NSN 5310-00-721-5521 is a Nut,self-Locking,clinch, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-721-5521 has 6 cross-referenced part numbers: 81102 (Federal Screw Products, Inc.), 1076-59-2 (Bae Systems Information and Electronic Systems Integration Inc.), 200AS104-4B085CR (Naval Air Systems Command Managed Original Design Activity Not Material/parts Supplier), 7007-1 (The Dewey Electronics Corporation Div Pitometer Log Division), 107B8214P1 (Bae Systems Controls Inc.) and 1 more.
There are 12 known substitutes for 5310-00-721-5521: 5970-00-117-5220, 5310-00-209-2826, 4520-00-355-7515 and 9 more. Verify interchangeability with system specifications before substitution.
Key specifications for 50FP2-440: Surface Treatment: PASSIVATE OVERALL; Nut Counterbore Depth: 0.075 INCHES NOMINAL NUT IN; Counterbore Diameter: 0.139 INCHES MINIMUM AND 0.144 INCHES MAXIMUM NUT IN; Material: STEEL CORROSION RESISTING OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.