The Screw,machine, cataloged under National Stock Number 5305-01-289-8420, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Aps Systems, Inc Dba Eidal International Corp. Government technical data includes 17 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-289-8420 |
| Primary Part Number | 40179-1 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Aps Systems, Inc Dba Eidal International Corp |
| Status | ACTIVE |
| Extended Washer Thickness | 0.200 INCHES NOMINAL IN |
| Head Height | 0.141 INCHES NOMINAL IN |
| Screw Surface Treatment | CADMIUM OR ZINC |
| Fastener Length | 0.750 INCHES NOMINAL IN |
| Screw Material Document and Classification | ASTM-A ASSN STD SINGLE MATERIAL RESPONSE |
| Extended Washer Diameter | 0.380 INCHES NOMINAL IN |
| Thread Length | 0.750 INCHES NOMINAL IN |
| Nominal Thread Diameter | 0.190 INCHES IN |
| Head Style | HEXAGON EXTENDED WASHER |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.280 INCHES NOMINAL IN |
| Screw Material | STEEL |
| Internal Drive Style | SLOT |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Thread Series Designator | UNF |
| Screw Surface Treatment Document and Classification | QQ-P-41,TY1CLC FED SPEC 1ST TREATMENT RESPONSE OR QQ-Z-325 FED SPEC 2ND TREATMENT RESPONSE |
| 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 |
|---|---|
| 40179-1 PRIMARY | Aps Systems, Inc Dba Eidal International Corp (USA) |
| Reference | Meaning |
|---|---|
| 8223605-01 | 5/9 Secondary reference U.S. Government activity |
NSN 5305-01-289-8420 is a Screw,machine, manufactured by Aps Systems, Inc Dba Eidal International Corp, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-289-8420 has 1 manufacturer part number on file: 40179-1 (Aps Systems, Inc Dba Eidal International Corp).
Key specifications for 40179-1: Extended Washer Thickness: 0.200 INCHES NOMINAL IN; Head Height: 0.141 INCHES NOMINAL IN; Screw Surface Treatment: CADMIUM OR ZINC; Fastener Length: 0.750 INCHES NOMINAL IN. 17 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.