The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-421-0855, 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 Div Marine Systems. Government technical data includes 4 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 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 | 5305-01-421-0855 |
| Primary Part Number | 522C506-020 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Northrop Grumman Systems Corporation Div Marine Systems |
| Status | ACTIVE |
| Thread Quantity Per Inch | 11 |
| Nominal Thread Diameter | 0.625 INCHES IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Fastener Length | 5.000 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1135E18FN103 | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| B18.2.1 | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| 522C506-020 PRIMARY | Northrop Grumman Systems Corporation Div Marine Systems (USA) |
| A449-0 | American Society for Testing and Materials Dba Astm International (USA) |
NSN 5305-01-421-0855 is a Screw,cap,hexagon Head, manufactured by Northrop Grumman Systems Corporation Div Marine Systems, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-421-0855 has 4 cross-referenced part numbers: 1135E18FN103 (Northrop Grumman Systems Corporation Div Marine Systems), B18.2.1 (American National Standards Institute Incorporated Dba American National Standards Institute), 522C506-020 (Northrop Grumman Systems Corporation Div Marine Systems), A449-0 (American Society for Testing and Materials Dba Astm International).
There is 1 known substitute for 5305-01-421-0855: 2520-01-182-9245. Verify interchangeability with system specifications before substitution.
Key specifications for 522C506-020: Thread Quantity Per Inch: 11; Nominal Thread Diameter: 0.625 INCHES IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Fastener Length: 5.000 INCHES NOMINAL IN. 4 total characteristics are documented in the Federal Logistics Information System.