The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-937-2568, 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 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. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-937-2568 |
| Primary Part Number | 1BN4C31P1 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | H-K Connecticut Holding Company |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.112 INCHES IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Material | STEEL COMP 4037 OVERALL |
| Locking Feature | PELLET THREADS |
| Thread Quantity Per Inch | 40 |
| Width Across Flats | 0.063 INCHES NOMINAL IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Internal Drive Style | HEXAGON |
| Surface Treatment | CADMIUM OVERALL |
| Head Height | 0.051 INCHES MINIMUM AND 0.059 INCHES MAXIMUM IN |
| Material Document and Classification | QQ-S-624 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Class | 3A A |
| Fastener Length | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.312 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Head Diameter | 0.201 INCHES MINIMUM AND 0.213 INCHES MAXIMUM IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-00-937-2568 is a Screw,cap,socket Head, manufactured by H-K Connecticut Holding Company, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-937-2568 has 2 cross-referenced part numbers: 1BN4C31P1 (H-K Connecticut Holding Company), 5479 (Air-Lock, Incorporated).
There are 7 known substitutes for 5305-00-937-2568: 3110-00-227-2344, 5935-00-478-1197, 5315-00-616-5514 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1BN4C31P1: Nominal Thread Diameter: 0.112 INCHES IN; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Material: STEEL COMP 4037 OVERALL; Locking Feature: PELLET THREADS. 16 total characteristics are documented in the Federal Logistics Information System.