The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-948-9800, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Air-Lock, Incorporated. Government technical data includes 17 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. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-948-9800 |
| Primary Part Number | 5237 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Air-Lock, Incorporated |
| Status | CANCELLED |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Width Across Flats | 0.078 INCHES NOMINAL IN |
| Hardness Rating | 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL |
| Surface Treatment | CADMIUM OVERALL |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Material | STEEL COMP 4037 OVERALL |
| Thread Quantity Per Inch | 32 |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Internal Drive Style | HEXAGON |
| Locking Feature | PELLET THREADS |
| Thread Direction | RIGHT-HAND |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Thread Class | 3A A |
| Head Style | FLAT COUNTERSUNK |
| Thread Length | 0.500 INCHES MAXIMUM IN |
| Head Diameter | 0.263 INCHES MINIMUM AND 0.307 INCHES MAXIMUM IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 5305-00-948-9800 is a Screw,cap,socket Head, manufactured by Air-Lock, Incorporated, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-948-9800 has 2 cross-referenced part numbers: BN6C50P (H-K Connecticut Holding Company), 5237 (Air-Lock, Incorporated).
There are 8 known substitutes for 5305-00-948-9800: 4510-00-215-8019, 5975-00-615-9169, 5940-01-006-2411 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 5237: Fastener Length: 0.500 INCHES NOMINAL IN; Width Across Flats: 0.078 INCHES NOMINAL IN; Hardness Rating: 28.0 ROCKWELL C MINIMUM AND 32.0 ROCKWELL C MAXIMUM OVERALL; Surface Treatment: CADMIUM OVERALL. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-948-9800 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.