The Screw,machine, cataloged under National Stock Number 5305-01-321-6226, 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 3 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-321-6226 |
| Primary Part Number | 1/4-20UNC-3A X 1 IN. LG |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | American National Standards Institute Incorporated Dba American National Standards Institute |
| Status | ACTIVE |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Internal Drive Style | SLOT |
| Head Diameter | 0.452 INCHES MINIMUM AND 0.507 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 20 |
| Thread Class | 3A A |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Screw Material | NICKEL ALLOY 400 |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Length | 0.797 INCHES MINIMUM AND 0.847 INCHES MAXIMUM IN |
| Head Style | FLAT COUNTERSUNK |
| Nondefinitive Spec/std Data | 1 TYPE AND 25 STYLE |
| Screw Material Document and Classification | QQ-N-281 CL A FED SPEC SINGLE MATERIAL RESPONSE |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1/4-20UNC-3A X 1 IN. LG PRIMARY | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| FF-S-92 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 845-4687407-257 1.000IN SCREW | Naval Ship Systems Command (USA) |
NSN 5305-01-321-6226 is a Screw,machine, manufactured by American National Standards Institute Incorporated Dba American National Standards Institute, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-321-6226 has 3 cross-referenced part numbers: 1/4-20UNC-3A X 1 IN. LG (American National Standards Institute Incorporated Dba American National Standards Institute), FF-S-92 (Federal Specifications Promulgated by General Services Administration Washington DC), 845-4687407-257 1.000IN SCREW (Naval Ship Systems Command).
There is 1 known substitute for 5305-01-321-6226: 5305-01-332-2167. Verify interchangeability with system specifications before substitution.
Key specifications for 1/4-20UNC-3A X 1 IN. LG: Thread Series Designator: UNIFIED NATIONAL COARSE (UNC); Fastener Length: 1.000 INCHES NOMINAL IN; Minimum Tensile Strength: 80000 POUNDS PER SQUARE INCH LBS; Internal Drive Style: SLOT. 15 total characteristics are documented in the Federal Logistics Information System.