The Screw,machine, cataloged under National Stock Number 5305-01-020-7570, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Northrop Grumman Systems Corporation. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-020-7570 |
| Primary Part Number | MS51957-29 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation |
| Status | ACTIVE |
| Screw Material | STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 303SE OR STEEL COMP 316 |
| Screw Surface Treatment | PASSIVATE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Style | PAN NO. 2 |
| Thread Quantity Per Inch | 32 |
| Thread Length | 0.345 INCHES MINIMUM AND 0.376 INCHES MAXIMUM IN |
| Minimum Tensile Strength | 75000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Head Height | 0.072 INCHES MINIMUM AND 0.082 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Screw Surface Treatment Document and Classification | MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE |
| Screw Material Document and Classification | QQ-S-763 FED SPEC ALL MATERIAL RESPONSES |
| Internal Drive Style | SLOT |
| Head Diameter | 0.256 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Fastener Length | 0.407 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS51957-29 PRIMARY | Northrop Grumman Systems Corporation (USA) |
| 4912524-03 | Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan (USA) |
| 4912524-03 | Northrop Grumman Systems Corporation (USA) |
NSN 5305-01-020-7570 is a Screw,machine, manufactured by Northrop Grumman Systems Corporation, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-020-7570 has 3 cross-referenced part numbers: MS51957-29 (Northrop Grumman Systems Corporation), 4912524-03 (Lockheed Martin Corp Dba Lockheed Martin Div Mst - Eagan), 4912524-03 (Northrop Grumman Systems Corporation).
There are 2 known substitutes for 5305-01-020-7570: 5305-00-054-6653, 5305-00-607-1437. Verify interchangeability with system specifications before substitution.
Key specifications for MS51957-29: Screw Material: STEEL COMP 302 OR STEEL COMP 303 OR STEEL COMP 304 OR STEEL COMP 303SE OR STEEL COMP 316; Screw Surface Treatment: PASSIVATE; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Head Style: PAN NO. 2. 16 total characteristics are documented in the Federal Logistics Information System.