The Screw,machine, cataloged under National Stock Number 5305-01-666-4231, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Lyn-Tron, Inc. Dba Lyn-Tron 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 | 5305-01-666-4231 |
| Primary Part Number | SS3471-01 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Lyn-Tron, Inc. Dba Lyn-Tron Inc |
| Status | ACTIVE |
| Head Height | 0.5525 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN |
| Fastener Length | 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN |
| Thread Length | 0.2975 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN |
| Nominal Thread Diameter | 0.250 INCHES IN |
| Head Style | KNURLED NO. 5 |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL CORROSION RESISTING |
| Internal Drive Style | SLOT |
| Thread Quantity Per Inch | 20 |
| Head Diameter | 0.500 INCHES MINIMUM AND 0.510 INCHES MAXIMUM 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 |
|---|---|
| SS3471-01 PRIMARY | Lyn-Tron, Inc. Dba Lyn-Tron Inc (USA) |
NSN 5305-01-666-4231 is a Screw,machine, manufactured by Lyn-Tron, Inc. Dba Lyn-Tron Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-666-4231 has 1 manufacturer part number on file: SS3471-01 (Lyn-Tron, Inc. Dba Lyn-Tron Inc).
Key specifications for SS3471-01: Head Height: 0.5525 INCHES MINIMUM AND 0.5725 INCHES MAXIMUM IN; Fastener Length: 0.860 INCHES MINIMUM AND 0.890 INCHES MAXIMUM IN; Thread Length: 0.2975 INCHES MINIMUM AND 0.3125 INCHES MAXIMUM IN; Nominal Thread Diameter: 0.250 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.