The Screw,machine, cataloged under National Stock Number 5305-00-367-4218, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Zenith Fuel Systems Llc. Government technical data includes 15 specifications, cited from the U.S. Government catalog. The record lists 2 manufacturer part numbers for this item, enabling identification through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. 1 item shares a part number with this NSN in the catalog (possible match — not a government interchangeability claim). Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-367-4218 |
| Primary Part Number | C140-38 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Zenith Fuel Systems Llc |
| Status | ACTIVE |
| Head Height | 0.188 INCHES NOMINAL IN |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 0.500 INCHES NOMINAL IN |
| Screw Material Document and Classification | SAE ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.440 INCHES MINIMUM IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.375 INCHES NOMINAL IN |
| Screw Material | STEEL COMP 1212 |
| Bottom Countersink Diameter | 0.219 INCHES NOMINAL IN |
| Internal Drive Style | SLOT |
| Countersink Angle | 80.0 DEGREES NOMINAL |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
NSN 5305-00-367-4218 is a Screw,machine, manufactured by Zenith Fuel Systems Llc, classified under FSC 5305, Screws. Status: active.
NSN 5305-00-367-4218 has 2 manufacturer part numbers on file: C140-38 (Honeywell Intl Inc Defense Avionics Systems), C140-38 (Zenith Fuel Systems Llc).
1 possible match (shared part number, not a government interchangeability claim): 5950-01-325-9449. Verify interchangeability with system specifications before substitution.
Key specifications for C140-38: Head Height: 0.188 INCHES NOMINAL IN; Screw Surface Treatment: CADMIUM; Fastener Length: 0.500 INCHES NOMINAL IN; Screw Material Document and Classification: SAE ASSN STD SINGLE MATERIAL RESPONSE. 15 specifications are documented in the U.S. Government catalog.
No hazard code in the DLA record (HMIC N). Hazard information on this page is shown exactly as it appears in the DLA record.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-16.
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.