The Screw,machine, cataloged under National Stock Number 5305-01-307-4391, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Astronics Test Systems Inc. Government technical data includes 13 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 | 5305-01-307-4391 |
| Primary Part Number | 616329 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Astronics Test Systems Inc |
| Status | ACTIVE |
| Head Height | 1.96 MILLIMETERS MINIMUM AND 2.10 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6H |
| Screw Surface Treatment | ZINC |
| Fastener Length | 8.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.6 |
| Thread Length | 6.8 MILLIMETERS MINIMUM AND 8.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 3.5 MILLIMETERS MM |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL |
| Internal Drive Style | CROSS RECESS TYPE 1 |
| Thread Series Designator | M |
| Head Diameter | 6.64 MILLIMETERS MINIMUM AND 7.00 MILLIMETERS MAXIMUM MM |
| 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 |
|---|---|
| 616329 PRIMARY | Astronics Test Systems Inc (USA) |
NSN 5305-01-307-4391 is a Screw,machine, manufactured by Astronics Test Systems Inc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-307-4391 has 1 manufacturer part number on file: 616329 (Astronics Test Systems Inc).
Key specifications for 616329: Head Height: 1.96 MILLIMETERS MINIMUM AND 2.10 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6H; Screw Surface Treatment: ZINC; Fastener Length: 8.0 MILLIMETERS NOMINAL MM. 13 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.