The Screw,cap,socket Head, cataloged under National Stock Number 5305-00-273-5557, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-273-5557 |
| Primary Part Number | 43-S-4374-1640 |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier |
| Status | ACTIVE |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 32 |
| Material | STEEL OVERALL |
| Minimum Yield Strength | 130000 POUNDS PER SQUARE INCH LBS |
| Head Style | FLAT CHAMFER |
| Material Document and Classification | 66 FED STD SINGLE MATERIAL RESPONSE OVERALL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Thread Length | 0.500 INCHES NOMINAL IN |
| Internal Drive Style | HEXAGON |
| Hardness Rating | 36.0 ROCKWELL C MINIMUM AND 43.0 ROCKWELL C MAXIMUM OVERALL |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Width Across Flats | 0.140 INCHES MINIMUM AND 0.142 INCHES MAXIMUM IN |
| Head Height | 0.159 INCHES MINIMUM AND 0.164 INCHES MAXIMUM IN |
| Head Diameter | 0.262 INCHES MINIMUM AND 0.270 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 6 TYPE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Thread Class | 3A A |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FFS86TYPE6 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 43-S-4374-1640 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
| 12Z1196-14 PRIMARY | Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier (USA) |
NSN 5305-00-273-5557 is a Screw,cap,socket Head, manufactured by Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-273-5557 has 3 cross-referenced part numbers: FFS86TYPE6 (Federal Specifications Promulgated by General Services Administration Washington DC), 43-S-4374-1640 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier), 12Z1196-14 (Navair and Navsea Managed Original Design Activity Dwg Not Material/parts Supplier).
There are 11 known substitutes for 5305-00-273-5557: 5305-00-080-4480, 5305-00-227-1003, 5305-00-273-5581 and 8 more. Verify interchangeability with system specifications before substitution.
Key specifications for 43-S-4374-1640: Surface Treatment: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL; Thread Direction: RIGHT-HAND; Thread Quantity Per Inch: 32; Material: STEEL OVERALL. 18 total characteristics are documented in the Federal Logistics Information System.