The Screw,externally Relieved Body, cataloged under National Stock Number 5305-00-639-7127, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Telemechanics Inc. Government technical data includes 18 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 2 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.
| Parameter | Value |
|---|---|
| NSN | 5305-00-639-7127 |
| Primary Part Number | 81564 |
| Item Name | Screw,externally Relieved Body |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Telemechanics Inc |
| Status | CANCELLED |
| Internal Drive Style | SLOT |
| Thread Series Designator | UNF |
| First Diameter From Head | 0.093 INCHES NOMINAL IN |
| Head Diameter | 0.312 INCHES NOMINAL IN |
| Thread Class | 3A A |
| Distance From Largest Bearing Surface of Head to End of First Diameter | 0.025 INCHES NOMINAL IN |
| Head Style | FILLISTER |
| Thread Quantity Per Inch | 40 |
| Distance From Largest Bearing Surface of Head to End of Second Diameter | 0.406 INCHES NOMINAL IN |
| Surface Treatment | NICKEL OVERALL |
| Externally Relieved Body Diameter Quantity | 2 |
| Fastener Length | 0.406 INCHES NOMINAL IN |
| Material | STEEL OVERALL |
| Thread Length | 0.328 INCHES MINIMUM IN |
| Head Height | 0.620 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.138 INCHES IN |
| Second Diameter From Head | 0.138 INCHES NOMINAL IN |
| Thread Direction | RIGHT-HAND |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 5305-00-639-7127 is a Screw,externally Relieved Body, manufactured by Telemechanics Inc, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-639-7127 has 2 cross-referenced part numbers: 81564 (Telemechanics Inc), 81564 (At and T Corp).
There are 2 known substitutes for 5305-00-639-7127: 5340-00-912-2127, 4820-01-199-7892. Verify interchangeability with system specifications before substitution.
Key specifications for 81564: Internal Drive Style: SLOT; Thread Series Designator: UNF; First Diameter From Head: 0.093 INCHES NOMINAL IN; Head Diameter: 0.312 INCHES NOMINAL IN. 18 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-639-7127 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.