The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-442-0949, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Unison Industries Llc. Government technical data includes 15 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-442-0949 |
| Primary Part Number | 10-7121 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Unison Industries Llc |
| Status | ACTIVE |
| Head Style | HEXAGON |
| Thread Length | 0.281 INCHES MINIMUM IN |
| First Diameter From Head | 0.142 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 32 |
| Fastener Length | 0.781 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Head Height | 0.152 INCHES MINIMUM AND 0.162 INCHES MAXIMUM IN |
| Thread Series Designator | UNF |
| Externally Relieved Body Diameter Quantity | 1 |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.500 INCHES NOMINAL IN |
| Material | STEEL CORROSION RESISTING OVERALL |
| Thread Class | 3A A |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-00-442-0949 is a Screw,externally Relieved Body, manufactured by Unison Industries Llc, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-442-0949 has 3 cross-referenced part numbers: 10-7121 (Unison Industries Llc), 10-7121 (Amphenol Corp Div Amphenol Aerospace Operations), 10-7121 (Teledyne Industries Inc Teledyne Power Systems Div).
There are 3 known substitutes for 5305-00-442-0949: 5940-00-687-0294, 6240-01-032-7095, 6240-01-492-5043. Verify interchangeability with system specifications before substitution.
Key specifications for 10-7121: Head Style: HEXAGON; Thread Length: 0.281 INCHES MINIMUM IN; First Diameter From Head: 0.142 INCHES MINIMUM AND 0.147 INCHES MAXIMUM IN; Thread Quantity Per Inch: 32. 15 total characteristics are documented in the Federal Logistics Information System.