The Screw,cap,socket Head, cataloged under National Stock Number 5305-01-332-2167, 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 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 8 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-332-2167 |
| Primary Part Number | 1/4-20UNC-3A 1 LG |
| Item Name | Screw,cap,socket Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | The American Society of Mechanical Engineers |
| Status | ACTIVE |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM |
| Head Diameter | 0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Nondefinitive Spec/std Data | 4 TYPE |
| Thread Class | 3A A |
| Material | NICKEL ALLOY 400 OVERALL |
| Fastener Length | 1.000 INCHES NOMINAL IN |
| Minimum Yield Strength | 40000 POUNDS PER SQUARE INCH LBS |
| Width Across Flats | 0.156 INCHES NOMINAL IN |
| Thread Length | 0.739 INCHES MINIMUM AND 1.000 INCHES MAXIMUM IN |
| Internal Drive Style | HEXAGON |
| Head Style | FLAT COUNTERSUNK |
| Material Document and Classification | QQ-N-281,CLA FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Minimum Tensile Strength | 80000 POUNDS PER SQUARE INCH LBS |
| Thread Direction | RIGHT-HAND |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 1/4 20UNC 3A X 1 IN LG | American National Standards Institute Incorporated Dba American National Standards Institute (USA) |
| FF-S-86 TYPE IV | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| FF-S-86 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 1/4-20UNC-3A 1 LG PRIMARY | The American Society of Mechanical Engineers (USA) |
NSN 5305-01-332-2167 is a Screw,cap,socket Head, manufactured by The American Society of Mechanical Engineers, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-01-332-2167 has 4 cross-referenced part numbers: 1/4 20UNC 3A X 1 IN LG (American National Standards Institute Incorporated Dba American National Standards Institute), FF-S-86 TYPE IV (Federal Specifications Promulgated by General Services Administration Washington DC), FF-S-86 (Federal Specifications Promulgated by General Services Administration Washington DC), 1/4-20UNC-3A 1 LG (The American Society of Mechanical Engineers).
There are 8 known substitutes for 5305-01-332-2167: 5305-00-849-2853, 5305-00-900-1829, 5305-01-145-5306 and 5 more. Verify interchangeability with system specifications before substitution.
Key specifications for 1/4-20UNC-3A 1 LG: Countersink Angle: 80.0 DEGREES MINIMUM AND 84.0 DEGREES MAXIMUM; Head Diameter: 0.480 INCHES MINIMUM AND 0.531 INCHES MAXIMUM IN; Thread Quantity Per Inch: 20; Thread Series Designator: UNIFIED NATIONAL COARSE (UNC). 17 total characteristics are documented in the Federal Logistics Information System.