The Screw,externally Relieved Body, cataloged under National Stock Number 5305-01-379-2336, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Unicorp.. Government technical data includes 8 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. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-379-2336 |
| Primary Part Number | 4157 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Unicorp. |
| Status | ACTIVE |
| Head Height | 0.250 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Quantity Per Inch | 20 |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Material | STEEL COMP 303 OVERALL |
| Head Diameter | 0.750 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 0441C0121-57 | Lockheed Martin Corporation Div Rms (USA) |
| 0441C0121-57 | Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems (USA) |
| 4157 PRIMARY | Unicorp. (USA) |
NSN 5305-01-379-2336 is a Screw,externally Relieved Body, manufactured by Unicorp., classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-379-2336 has 3 cross-referenced part numbers: 0441C0121-57 (Lockheed Martin Corporation Div Rms), 0441C0121-57 (Martin Marietta Technologies Inc Sub of Martin Marietta Corp Aero and Naval Systems), 4157 (Unicorp.).
There are 10 known substitutes for 5305-01-379-2336: 4730-00-097-9815, 5305-00-349-8169, 5998-00-489-0604 and 7 more. Verify interchangeability with system specifications before substitution.
Key specifications for 4157: Head Height: 0.250 INCHES NOMINAL IN; Nominal Thread Diameter: 0.250 INCHES IN; Thread Quantity Per Inch: 20; Fastener Length: 1.000 INCHES NOMINAL IN. 9 total characteristics are documented in the Federal Logistics Information System.