The Screw,cap,hexagon Head, cataloged under National Stock Number 5305-00-720-7997, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Federal Specifications Promulgated by General Services Administration Washington DC. 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-720-7997 |
| Primary Part Number | FFS85 |
| Item Name | Screw,cap,hexagon Head |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Federal Specifications Promulgated by General Services Administration Washington DC |
| Status | CANCELLED |
| Surface Treatment | CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL |
| Head Style | HEXAGON |
| Width Between Flats | 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN |
| Thread Quantity Per Inch | 20 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Minimum Tensile Strength | 69000 POUNDS PER SQUARE INCH LBS |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Material | STEEL OVERALL |
| Fastener Length | 2.906 INCHES MINIMUM AND 3.000 INCHES MAXIMUM IN |
| Head Height | 0.150 INCHES MINIMUM AND 0.163 INCHES MAXIMUM IN |
| Thread Length | 0.750 INCHES MINIMUM IN |
| Thread Class | 2A A |
| Hardness Rating | 100.0 ROCKWELL B MAXIMUM OVERALL |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
| Part Number | Manufacturer |
|---|---|
| FFS85 | Federal Specifications Promulgated by General Services Administration Washington DC (USA) |
| 121979 | General Motors Corp (USA) |
| MS35291-18 | Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M |
NSN 5305-00-720-7997 is a Screw,cap,hexagon Head, manufactured by Federal Specifications Promulgated by General Services Administration Washington DC, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-720-7997 has 3 cross-referenced part numbers: FFS85 (Federal Specifications Promulgated by General Services Administration Washington DC), 121979 (General Motors Corp), MS35291-18 (Military Standards Promulgated by Military Departments Under Authority of Defense Standardization Manual 4120 3-M).
There is 1 known substitute for 5305-00-720-7997: 5940-00-259-9092. Verify interchangeability with system specifications before substitution.
Key specifications for FFS85: Surface Treatment: CADMIUM AND CHROMATE OR ZINC AND CHROMATE OVERALL; Head Style: HEXAGON; Width Between Flats: 0.428 INCHES MINIMUM AND 0.437 INCHES MAXIMUM IN; Thread Quantity Per Inch: 20. 14 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-720-7997 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.