The Screw,shoulder, cataloged under National Stock Number 5305-00-638-8504, is classified within Federal Supply Class 5305 (No Item Name Available) of the Hardware and Abrasives group. The primary manufacturer of record is Aerosonic Llc. Government technical data includes 16 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 | 5305-00-638-8504 |
| Primary Part Number | M1243 |
| Item Name | Screw,shoulder |
| FSC / FSG | 5305 / 53 — No Item Name Available |
| Manufacturer | Aerosonic Llc |
| Status | CANCELLED |
| Shoulder Diameter | 0.082 INCHES MINIMUM AND 0.069 INCHES MAXIMUM FIRST SHOULDER IN |
| Shoulder Length | 0.068 INCHES MINIMUM AND 0.015 INCHES MAXIMUM FIRST SHOULDER IN |
| Countersink Angle | 82.0 DEGREES NOMINAL |
| Head Diameter | 0.122 INCHES NOMINAL IN |
| Thread Class | 2A A |
| Fastener Length | 0.175 INCHES MAXIMUM IN |
| Thread Length | 0.070 INCHES MINIMUM IN |
| Material | COPPER ALLOY 360 OVERALL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Head Style | FLAT COUNTERSUNK |
| Shoulder Shape | ROUND FIRST SHOULDER |
| Thread Series Designator | UNF |
| Material Document and Classification | QQ-B-626 FED SPEC SINGLE MATERIAL RESPONSE OVERALL |
| Thread Direction | RIGHT-HAND |
| Thread Quantity Per Inch | 72 |
| Nominal Thread Diameter | 0.073 INCHES IN |
| Acquisition Status | CANCELLED |
| HAZMAT | No |
NSN 5305-00-638-8504 is a Screw,shoulder, manufactured by Aerosonic Llc, classified under FSC 5305 (No Item Name Available). Status: cancelled.
NSN 5305-00-638-8504 has 2 cross-referenced part numbers: M1243 (Aerosonic Llc), M1243 (Aerosonic Corp).
There are 2 known substitutes for 5305-00-638-8504: 5330-00-599-5440, 6625-00-971-7090. Verify interchangeability with system specifications before substitution.
Key specifications for M1243: Shoulder Diameter: 0.082 INCHES MINIMUM AND 0.069 INCHES MAXIMUM FIRST SHOULDER IN; Shoulder Length: 0.068 INCHES MINIMUM AND 0.015 INCHES MAXIMUM FIRST SHOULDER IN; Countersink Angle: 82.0 DEGREES NOMINAL; Head Diameter: 0.122 INCHES NOMINAL IN. 16 total characteristics are documented in the Federal Logistics Information System.
NSN 5305-00-638-8504 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.