The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-012-1890, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Army Weapons Command Attn Amswe-Ree-S. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-012-1890 |
| Primary Part Number | 121890 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Army Weapons Command Attn Amswe-Ree-S |
| Status | ACTIVE |
| Hardness Rating | 100.0 ROCKWELL B MAXIMUM OVERALL |
| Material | STEEL OVERALL |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Thread Length | 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Fastener Length | 0.719 INCHES MINIMUM AND 0.750 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 20 |
| Head Height | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Minimum Tensile Strength | 69000 POUNDS PER SQUARE INCH LBS |
| Surface Treatment | PHOSPHATE OVERALL |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
NSN 5305-00-012-1890 is a Screw,cap,hexagon Head, manufactured by Army Weapons Command Attn Amswe-Ree-S, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-012-1890 has 3 cross-referenced part numbers: 121890 (Army Weapons Command Attn Amswe-Ree-S), MS35293-6 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), 52167 (Am General Llc).
There are 5 known substitutes for 5305-00-012-1890: 5360-00-597-2287, 2520-00-674-3925, 5305-00-695-6571 and 2 more. Verify interchangeability with system specifications before substitution.
Key specifications for 121890: Hardness Rating: 100.0 ROCKWELL B MAXIMUM OVERALL; Material: STEEL OVERALL; Width Between Flats: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN; Thread Class: 2A A. 14 total characteristics are documented in the Federal Logistics Information System.