The Screw,machine, cataloged under National Stock Number 5305-01-406-7434, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 6 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-406-7434 |
| Primary Part Number | 0.250-20UNC-2A X 0.500 316 CRES |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | American National Standards Institute Incorporated Dba American National Standards Institute |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Screw Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR FED-STD66 FED STD SINGLE MATERIAL RESPONSE |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Screw Material | STEEL COMP 316 |
| Thread Direction | RIGHT-HAND |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Height | 0.162 INCHES MINIMUM AND 0.175 INCHES MAXIMUM IN |
| Head Diameter | 0.473 INCHES MINIMUM AND 0.492 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Fastener Length | 0.469 INCHES MINIMUM AND 0.500 INCHES MAXIMUM IN |
| Thread Length | 0.500 INCHES MAXIMUM IN |
| Head Style | PAN |
| Screw Surface Treatment | PASSIVATE |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Quantity Per Inch | 20 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 0.250-20UNC-2A X 0.500 316 CRES | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| MS51957-79S316 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS51957-79 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 1/4-20UNC-2A,1/ 2"LG, CRES 316 | Zf Industrieantriebe Witten Gmbh (DEU) |
| 608-712913 ITEM 63 | Naval Sea Systems Command (USA) |
| 608-7120913 ITE | Naval Sea Systems Command (USA) |
NSN 5305-01-406-7434 is a Screw,machine, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-406-7434 has 6 cross-referenced part numbers: 0.250-20UNC-2A X 0.500 316 CRES (American National Standards Institute Incorporated Dba American National Standards Institute), MS51957-79S316 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS51957-79 (Zf Industrieantriebe Witten Gmbh), 1/4-20UNC-2A,1/ 2"LG, CRES 316 (Zf Industrieantriebe Witten Gmbh), 608-712913 ITEM 63 (Naval Sea Systems Command) and 1 more.
There are 4 known substitutes for 5305-01-406-7434: 5305-00-071-1315, 5305-01-419-0830, 5305-01-424-1355 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 0.250-20UNC-2A X 0.500 316 CRES: Nominal Thread Diameter: 0.250 INCHES IN; Screw Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR FED-STD66 FED STD SINGLE MATERIAL RESPONSE; Minimum Tensile Strength: 80000 POUNDS PER SQUARE INCH LBS; Thread Class: 2A A. 16 total characteristics are documented in the Federal Logistics Information System.