The Setscrew, cataloged under National Stock Number 5305-00-639-6240, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Contraves Inc. Government technical data includes 16 verified specifications, sourced from the Federal Logistics Information System. This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the government interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-639-6240 |
| Primary Part Number | S73 |
| Item Name | Setscrew |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Contraves Inc |
| Status | CANCELLED |
| Thread Class | 2A A |
| Thread Series Designator | UNF |
| Surface Treatment | CADMIUM AND CHROMATE OVERALL |
| Hardness Rating | 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL |
| Nondefinitive Spec/std Data | 2 TYPE AND 1 STYLE |
| Departure From Cited Designator | AS MODIFIED BY THREAD SIZE AND SERIES/TYPE DESIGNATOR |
| Material Document and Classification | 66 FED STD ALL MATERIAL RESPONSES OVERALL |
| Head Style | HEADLESS (SETSCREW) |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Nominal Thread Diameter | 0.073 INCHES IN |
| Thread Quantity Per Inch | 72 |
| Features Provided | CASEHARDENED |
| Fastener Length | 0.031 INCHES MINIMUM AND 0.062 INCHES MAXIMUM IN |
| Thread Length | 0.062 INCHES MAXIMUM IN |
| Thread Direction | RIGHT-HAND |
| Point Style | FLAT |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 5305-00-639-6240 is a Setscrew, manufactured by Contraves Inc, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-639-6240 has 4 cross-referenced part numbers: S73 (Contraves Inc), 172X1-16 (Sps Technologies, Llc Dba PB Fasteners), 1-72X1-16 (Sps Technologies, Llc Dba PB Fasteners), FFS210 (Federal Specifications Promulgated by General Services Administration Washington DC).
There is 1 known substitute for 5305-00-639-6240: 6240-00-272-8594. Verify interchangeability with system specifications before substitution.
Key specifications for S73: Thread Class: 2A A; Thread Series Designator: UNF; Surface Treatment: CADMIUM AND CHROMATE OVERALL; Hardness Rating: 30.0 ROCKWELL C MINIMUM AND 37.0 ROCKWELL C MAXIMUM OVERALL. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-639-6240 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.