The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-621-2491, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Fastenal Company Dba Fastenal Co. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-621-2491 |
| Primary Part Number | 23806 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Fastenal Company Dba Fastenal Co |
| Status | ACTIVE |
| Material | STEEL OVERALL |
| Color | BLACK OVERALL |
| Width Across Flats | 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN |
| Thread Length | 0.97 INCHES MINIMUM AND 1.00 INCHES MAXIMUM IN |
| Fastener Length | 0.97 INCHES MINIMUM AND 1.00 INCHES MAXIMUM IN |
| Internal Drive Style | HEXAGON |
| Head Height | 0.244 INCHES MINIMUM AND 0.250 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 28 |
| Head Style | FLAT FILLISTER |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Class | 3A A |
| Head Diameter | 0.365 INCHES MINIMUM AND 0.375 INCHES MAXIMUM IN |
| Material Document and Classification | ASTM A574 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Surface Treatment | BLACK CHEMICAL FINISH OVERALL |
| Thread Series Designator | UNRF |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 23806 PRIMARY | Fastenal Company Dba Fastenal Co (USA) |
NSN 5305-01-621-2491 is a Screw,cap,socket Head, manufactured by Fastenal Company Dba Fastenal Co, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-621-2491 has 1 cross-referenced part number: 23806 (Fastenal Company Dba Fastenal Co).
There are 4 known substitutes for 5305-01-621-2491: 2920-00-353-7204, 5325-00-721-6476, 2840-01-126-7659 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 23806: Material: STEEL OVERALL; Color: BLACK OVERALL; Width Across Flats: 0.1875 INCHES MINIMUM AND 0.1900 INCHES MAXIMUM IN; Thread Length: 0.97 INCHES MINIMUM AND 1.00 INCHES MAXIMUM IN. 17 total characteristics are documented in the Federal Logistics Information System.