The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-242-2645, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is H-K Connecticut Holding Company. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-242-2645 |
| Primary Part Number | 72130 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | H-K Connecticut Holding Company |
| Status | ACTIVE |
| Width Across Flats | 0.250 INCHES NOMINAL IN |
| Head Height | 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN |
| Material Document and Classification | AISI4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL COMP 4135 OVERALL |
| Surface Treatment | PHOSPHATE ZINC OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Thread Quantity Per Inch | 18 |
| Thread Class | 3A A |
| Head Diameter | 0.457 INCHES MINIMUM AND 0.469 INCHES MAXIMUM IN |
| Head Style | FLAT CHAMFER |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Internal Drive Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Thread Length | 1.139 INCHES MINIMUM AND 1.250 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-01-242-2645 is a Screw,cap,socket Head, manufactured by H-K Connecticut Holding Company, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-242-2645 has 3 cross-referenced part numbers: 11579776 (Army, United States Department of the Dba Watervliet Arsenal Div Business Development), 72130 (H-K Connecticut Holding Company), 40518 (Allen Mfg Co Sub of Chicago Pneumatic Tool Co).
There are 7 known substitutes for 5305-01-242-2645: 3020-00-031-2477, 1730-00-909-7222, 5342-01-119-1830 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 72130: Width Across Flats: 0.250 INCHES NOMINAL IN; Head Height: 0.306 INCHES MINIMUM AND 0.312 INCHES MAXIMUM IN; Material Document and Classification: AISI4135 ASSN STD SINGLE MATERIAL RESPONSE OVERALL; Material: STEEL COMP 4135 OVERALL. 15 total characteristics are documented in the Federal Logistics Information System.