The Screw,machine, cataloged under National Stock Number 5305-01-424-3572, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, 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 | 5305-01-424-3572 |
| Primary Part Number | MS51959-81 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Head Diameter | 0.452 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Fastener Length | 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Screw Material Document and Classification | QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR FF-S-86 FED STD SINGLE MATERIAL RESPONSE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Screw Surface Treatment | PASSIVATE |
| Screw Material | STEEL COMP 316 |
| Thread Quantity Per Inch | 20 |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Departure From Cited Document | AS MODIFIED BY MATERIAL |
| Screw Surface Treatment Document and Classification | QQ-P-35 FED SPEC SINGLE TREATMENT RESPONSE |
| Head Style | FLAT COUNTERSUNK |
| Thread Length | 0.497 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Thread Direction | LEFT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MS51959-81 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| MS51959-81S316 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5305-01-424-3572 is a Screw,machine, manufactured by Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-424-3572 has 2 cross-referenced part numbers: MS51959-81 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), MS51959-81S316 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
There are 2 known substitutes for 5305-01-424-3572: 5305-00-719-5021, 5305-01-424-3581. Verify interchangeability with system specifications before substitution.
Key specifications for MS51959-81: Head Diameter: 0.452 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN; Internal Drive Style: CROSS RECESS TYPE 1; Fastener Length: 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN; Screw Material Document and Classification: QQ-S-763 FED SPEC SINGLE MATERIAL RESPONSE OR FF-S-86 FED STD SINGLE MATERIAL RESPONSE. 18 total characteristics are documented in the Federal Logistics Information System.