The Screw,machine, cataloged under National Stock Number 5305-01-643-6440, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Endries International, Inc. Dba Servtonics, an Endries International, Inc.. Government technical data includes 10 specifications, cited from the U.S. Government catalog. The record lists 1 manufacturer part number for this item, enabling identification through both NSN and commercial part number lookups. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-643-6440 |
| Primary Part Number | 18Q5 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Endries International, Inc. Dba Servtonics, an Endries International, Inc. |
| Status | ACTIVE |
| Head Height | 0.26 INCHES NOMINAL IN |
| Fastener Length | 5.00 INCHES NOMINAL IN |
| Thread Length | 1.50 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.50 INCHES IN |
| Head Style | ROUND |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Thread Quantity Per Inch | 13 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Diameter | 1.06 INCHES NOMINAL IN |
| Acquisition Status | ACTIVE |
| DEMIL Code | DEMIL A — No Demilitarization Required |
| Hazard | No hazard code in the DLA record (HMIC N) |
| Criticality Code | X |
| Part Number | Manufacturer |
|---|---|
| 18Q5 PRIMARY | Endries International, Inc. Dba Servtonics, an Endries International, Inc. (USA) |
NSN 5305-01-643-6440 is a Screw,machine, manufactured by Endries International, Inc. Dba Servtonics, an Endries International, Inc., classified under FSC 5305, Screws. Status: active.
NSN 5305-01-643-6440 has 1 manufacturer part number on file: 18Q5 (Endries International, Inc. Dba Servtonics, an Endries International, Inc.).
Key specifications for 18Q5: Head Height: 0.26 INCHES NOMINAL IN; Fastener Length: 5.00 INCHES NOMINAL IN; Thread Length: 1.50 INCHES NOMINAL IN; Nominal Thread Diameter: 0.50 INCHES IN. 10 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.