The Setscrew, cataloged under National Stock Number 5305-00-004-0425, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Mason Electric Co. Dba Mason Controls. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-004-0425 |
| Primary Part Number | 21748 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Mason Electric Co. Dba Mason Controls |
| Status | ACTIVE |
| Thread Quantity Per Inch | 40 |
| Point Style | CUP |
| Thread Class | 2A A |
| Thread Series Designator | UNF |
| Material | STEEL OVERALL |
| Internal Drive Style | HEXAGON |
| Fastener Length | 0.125 INCHES NOMINAL IN |
| Head Style | HEADLESS (SETSCREW) |
| Width Across Flats | 0.062 INCHES NOMINAL IN |
| Thread Length | 0.125 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-00-004-0425 is a Setscrew, manufactured by Mason Electric Co. Dba Mason Controls, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-004-0425 has 3 cross-referenced part numbers: 21748 (Unison Industries Llc), 21748 (Amphenol Corp Div Amphenol Aerospace Operations), 21748 (Mason Electric Co. Dba Mason Controls).
There are 5 known substitutes for 5305-00-004-0425: 5910-00-010-8721, 5945-00-176-4750, 3455-00-540-2723 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 21748: Thread Quantity Per Inch: 40; Point Style: CUP; Thread Class: 2A A; Thread Series Designator: UNF. 12 total characteristics are documented in the Federal Logistics Information System.