The Screw,machine, cataloged under National Stock Number 5305-01-366-1478, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Naval Sea Systems Command. Government technical data includes 16 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-366-1478 |
| Primary Part Number | 5188943-4 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Naval Sea Systems Command |
| Status | ACTIVE |
| Head Height | 0.035 INCHES NOMINAL IN |
| Screw Surface Treatment | COPPER AND GOLD |
| Fastener Length | 0.153 INCHES NOMINAL IN |
| Thread Length | 0.128 INCHES NOMINAL IN |
| Bearing Surface of Head Surface Treatment | COPPER AND GOLD |
| Nominal Thread Diameter | 0.060 INCHES IN |
| Head Style | KNURLED NO. 3 |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | TRI-WING RECESS |
| Countersink Angle | 80.0 DEGREES MINIMUM AND 82.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 80 |
| Thread Series Designator | UNF |
| Head Diameter | 0.099 INCHES MINIMUM AND 0.119 INCHES MAXIMUM IN |
| Screw Surface Treatment Document and Classification | MIL-C-14550,CL2 MIL SPEC 1ST TREATMENT RESPONSE AND MIL-G-45204,TY2,CL1 MIL 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 |
|---|---|
| 5188943-4 PRIMARY | Naval Sea Systems Command (USA) |
| Reference | Meaning |
|---|---|
| 5188943-4 | 5/9 Secondary reference Euro-Space Engineering Inc |
| 5188943-4 | 5/9 Secondary reference Furno Co. |
NSN 5305-01-366-1478 is a Screw,machine, manufactured by Naval Sea Systems Command, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-366-1478 has 1 manufacturer part number on file: 5188943-4 (Naval Sea Systems Command).
Key specifications for 5188943-4: Head Height: 0.035 INCHES NOMINAL IN; Screw Surface Treatment: COPPER AND GOLD; Fastener Length: 0.153 INCHES NOMINAL IN; Thread Length: 0.128 INCHES NOMINAL IN. 16 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.