The Nut,self-Locking,slotted,hexagon, cataloged under National Stock Number 5310-00-550-9449, 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 13 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 5 commercial cross-references from 5 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5310-00-550-9449 |
| Primary Part Number | 50FK420 |
| Item Name | Nut,self-Locking,slotted,hexagon |
| FSC / FSG | 5310 / 53 — No Item Name Available |
| Manufacturer | Sps Technologies, Llc Dba PB Fasteners |
| Status | ACTIVE |
| Thread Direction | RIGHT-HAND |
| Locking Feature | PREVAILING TORQUE ALL METAL DESIGN |
| Bearing Surface Type | WASHER FACED |
| Nominal Thread Size | 0.250 INCHES IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Surface Treatment | PASSIVATE OVERALL |
| Nut Style | SLOTTED, HEXAGON |
| Thread Class | 2B |
| Thread Series | UNIFIED NATIONAL COARSE (UNC) |
| Nut Height | 0.189 INCHES MINIMUM AND 0.209 INCHES MAXIMUM IN |
| Width Across Flats | 0.430 INCHES MINIMUM AND 0.439 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 20 |
| Temp Rating | 800.0 FAHRENHEIT NOMINAL DEGF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 50FK420 PRIMARY | Sps Technologies, Llc Dba PB Fasteners (USA) |
| 50FK420 | Sprague Electric Co World Hqs (USA) |
| 80307 | Federal Screw Products, Inc. (USA) |
| 3574 | Husco International Inc (USA) |
| 819932-8 | Allied Signal Inc Aerospace Equipment Systems Eatontown Site (USA) |
NSN 5310-00-550-9449 is a Nut,self-Locking,slotted,hexagon, manufactured by Sps Technologies, Llc Dba PB Fasteners, classified under FSC 5310 (No Item Name Available). Status: active.
NSN 5310-00-550-9449 has 5 cross-referenced part numbers: 50FK420 (Sps Technologies, Llc Dba PB Fasteners), 50FK420 (Sprague Electric Co World Hqs), 80307 (Federal Screw Products, Inc.), 3574 (Husco International Inc), 819932-8 (Allied Signal Inc Aerospace Equipment Systems Eatontown Site).
There are 11 known substitutes for 5310-00-550-9449: 5310-00-004-1490, 5310-00-050-9012, 5905-00-190-8885 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 50FK420: Thread Direction: RIGHT-HAND; Locking Feature: PREVAILING TORQUE ALL METAL DESIGN; Bearing Surface Type: WASHER FACED; Nominal Thread Size: 0.250 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.