The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-018-1071, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is General Motors Corp. Government technical data includes 15 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 4 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-018-1071 |
| Primary Part Number | 181071 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | General Motors Corp |
| Status | ACTIVE |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Material | STEEL OVERALL |
| Hardness Rating | 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN |
| Nondefinitive Spec/std Data | 2 TYPE AND 10P STYLE AND 5 GRADE |
| Surface Treatment | PHOSPHATE OVERALL |
| Thread Quantity Per Inch | 20 |
| Thread Length | 0.750 INCHES MINIMUM IN |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Height | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN |
| Thread Class | 2A A |
| Minimum Tensile Strength | 120000 POUNDS PER SQUARE INCH LBS |
| Head Style | HEXAGON |
| Thread Direction | RIGHT-HAND |
| Fastener Length | 1.750 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| 181071 | General Motors Corp (USA) |
| FFS85TYPE2STYLE10PGRADE5 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| MS35299-13 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
| NASM90725 | National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use (USA) |
NSN 5305-00-018-1071 is a Screw,cap,hexagon Head, manufactured by General Motors Corp, classified under FSC 5305 (No Item Name Available). Status: active.
NSN 5305-00-018-1071 has 4 cross-referenced part numbers: 181071 (General Motors Corp), FFS85TYPE2STYLE10PGRADE5 (Federal Specifications Promulgated by General Services Administration Washington DC), MS35299-13 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M), NASM90725 (National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use).
There are 4 known substitutes for 5305-00-018-1071: 6240-00-892-4420, 5945-01-260-7887, 5998-01-368-8025 and 1 more. Verify interchangeability with system specifications before substitution.
Key specifications for 181071: Nominal Thread Diameter: 0.250 INCHES IN; Material: STEEL OVERALL; Hardness Rating: 23.0 ROCKWELL C MINIMUM AND 30.0 ROCKWELL C MAXIMUM OVERALL; Width Between Flats: 0.428 INCHES MINIMUM AND 0.438 INCHES MAXIMUM IN. 15 total characteristics are documented in the Federal Logistics Information System.