The Screw,machine, cataloged under National Stock Number 5305-00-272-1587, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Military Specifications Promulgated by Military Departments/agencies 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 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-272-1587 |
| Primary Part Number | MILB857TYPEB |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| Status | ACTIVE |
| Thread Class | 2A A |
| Nominal Thread Diameter | 0.500 INCHES IN |
| Thread Quantity Per Inch | 13 |
| Head Style | HEXAGON |
| Fastener Length | 1.812 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN |
| Departure From Cited Designator | AS MODIFIED BY THREAD SIZE AND SERIES/TYPE DESIGNATOR AND FASTENER LENGTH |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Screw Material | STEEL CORROSION RESISTING |
| Thread Length | 1.721 INCHES MINIMUM AND 1.875 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.750 INCHES NOMINAL IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Nondefinitive Spec/std Data | 1 TYPE AND 10S STYLE |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Screw Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE |
| Head Height | 0.317 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| MILB857TYPEB | Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M |
| 280451PC73 | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5305-00-272-1587 is a Screw,machine, manufactured by Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-272-1587 has 2 cross-referenced part numbers: MILB857TYPEB (Military Specifications Promulgated by Military Departments/agencies Under Authority of Defense Standardization Manual 4120 3-M), 280451PC73 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
There is 1 known substitute for 5305-00-272-1587: 5305-00-266-4105. Verify interchangeability with system specifications before substitution.
Key specifications for MILB857TYPEB: Thread Class: 2A A; Nominal Thread Diameter: 0.500 INCHES IN; Thread Quantity Per Inch: 13; Head Style: HEXAGON. 16 total characteristics are documented in the Federal Logistics Information System.