The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-267-8957, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is The American Society of Mechanical Engineers. Government technical data includes 17 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 9 manufacturers, enabling identification through both NSN and commercial part number lookups. 7 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-267-8957 |
| Primary Part Number | B1821BH025F175N |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | CANCELLED |
| Thread Quantity Per Inch | 28 |
| Minimum Tensile Strength | 150000 POUNDS PER SQUARE INCH LBS |
| Thread Class | 2A A |
| Hardness Rating | 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL |
| Material Document and Classification | SAE J429 ASSN STD ALL MATERIAL RESPONSES OVERALL |
| Material | STEEL COMP 1013 OR STEEL COMP 1015 OR STEEL COMP 1016 OR STEEL COMP 1017 OR STEEL COMP 1018 OR STEEL COMP 1019 OR STEEL COMP 1020 OR STEEL COMP 1021 OR STEEL COMP 1022 OR STEEL COMP 1023 OR STEEL COMP 1524 OR STEEL COMP 1025 OR STEEL COMP 1026 OR STEEL COMP 1527 OR STEEL COMP 1029 OR STEEL COMP 1030 OR STEEL COMP 1033 OR STEEL COMP 1034 OR STEEL COMP 1035 OR STEEL COMP 1536 OR STEEL COMP 1037 OR STEEL COMP 1038 OR STEEL COMP 1039 OR STEEL COMP 1040 OR STEEL COMP 1541 OVERALL |
| Surface Treatment | ZINC AND CHROMATE OVERALL |
| Thread Series Designator | UNF |
| Nondefinitive Spec/std Data | 2 TYPE AND 10P STYLE AND 8 GRADE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Fastener Length | 1.688 INCHES MINIMUM AND 1.750 INCHES MAXIMUM IN |
| Head Height | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN |
| Thread Length | 0.750 INCHES MINIMUM AND 0.938 INCHES MAXIMUM IN |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Surface Treatment Document and Classification | ASTM B633 TY 2 SC 3 ASSN STD SINGLE TREATMENT RESPONSE OVERALL |
| Head Style | HEXAGON |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 18C428 | Clark Equipment Co (USA) |
| 10493817 | Nimikkeistokeskus Ncb Finland (FIN) |
| 60270 | Bergstrom Inc (USA) |
| B1821BH025F175N PRIMARY | The American Society of Mechanical Engineers (USA) |
| MS90726-13 | Zf Industrieantriebe Witten Gmbh (DEU) |
| MS90727-13 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| B1821BH025F175N | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| FF-S-85 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 854348-00 | Defense Reduction Agency (USA) |
NSN 5305-00-267-8957 is a Screw,cap,hexagon Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-267-8957 has 9 cross-referenced part numbers: 18C428 (Clark Equipment Co), 10493817 (Nimikkeistokeskus Ncb Finland), 60270 (Bergstrom Inc), B1821BH025F175N (The American Society of Mechanical Engineers), MS90726-13 (Zf Industrieantriebe Witten Gmbh) and 4 more.
There are 7 known substitutes for 5305-00-267-8957: 2920-00-010-0492, 6150-00-020-3146, 5950-00-069-2177 and 4 more. Verify interchangeability with system specifications before substitution.
Key specifications for B1821BH025F175N: Thread Quantity Per Inch: 28; Minimum Tensile Strength: 150000 POUNDS PER SQUARE INCH LBS; Thread Class: 2A A; Hardness Rating: 32.0 ROCKWELL C MINIMUM AND 38.0 ROCKWELL C MAXIMUM OVERALL. 17 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-267-8957 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.