The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-01-255-7403, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is American National Standards Institute Incorporated Dba American National Standards Institute. Government technical data includes 15 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. 3 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-255-7403 |
| Primary Part Number | B1821BH056C300N |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | American National Standards Institute Incorporated Dba American National Standards Institute |
| Status | ACTIVE |
| Width Between Flats | 0.812 INCHES NOMINAL IN |
| Head Height | 0.359 INCHES NOMINAL IN |
| Fastener Length | 3.000 INCHES NOMINAL IN |
| Material | STEEL COMP 8640 OVERALL |
| Material Document and Classification | SAE GRADE8 ASSN STD SINGLE MATERIAL RESPONSE OVERALL |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Surface Treatment | ZINC AND DICHROMATE OVERALL |
| Thread Direction | RIGHT-HAND |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Head Style | HEXAGON |
| Thread Class | 2A A |
| Nominal Thread Diameter | 0.562 INCHES IN |
| Thread Length | 2.832 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 12 |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 860-530 | Dorman Products, Inc. Dba Dorman (USA) |
| B1821BH056C300N PRIMARY | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| MS90728-144 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| 197-530 | Dorman Products, Inc. Dba Dorman (USA) |
NSN 5305-01-255-7403 is a Screw,cap,hexagon Head, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-255-7403 has 4 cross-referenced part numbers: 860-530 (Dorman Products, Inc. Dba Dorman), B1821BH056C300N (American National Standards Institute Incorporated Dba American National Standards Institute), MS90728-144 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 197-530 (Dorman Products, Inc. Dba Dorman).
There are 3 known substitutes for 5305-01-255-7403: 3120-00-492-9096, 5360-01-027-8842, 5935-01-221-7987. Verify interchangeability with system specifications before substitution.
Key specifications for B1821BH056C300N: Width Between Flats: 0.812 INCHES NOMINAL IN; Head Height: 0.359 INCHES NOMINAL IN; Fastener Length: 3.000 INCHES NOMINAL IN; Material: STEEL COMP 8640 OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.