The Screw,machine, cataloged under National Stock Number 5305-00-830-1643, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 15 specifications, cited from the U.S. Government catalog. 3 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-00-830-1643 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Screw Surface Treatment | CADMIUM |
| Fastener Length | 0.620 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS 5070 ASSN STD SINGLE MATERIAL RESPONSE |
| Thread Length | 0.421 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN |
| Hardness Rating | 23.0 ROCKWELL C MAXIMUM |
| Nominal Thread Diameter | 0.312 INCHES IN |
| Head Style | FLAT COUNTERSUNK |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL COMP 1022 |
| Internal Drive Style | SLOT |
| Countersink Angle | 99.0 DEGREES MINIMUM AND 101.0 DEGREES MAXIMUM |
| Thread Class | 2A A |
| Thread Quantity Per Inch | 24 |
| Thread Series Designator | UNF |
| Head Diameter | 0.600 INCHES MINIMUM AND 0.635 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 |
| Reference | Meaning |
|---|---|
| 1-160-265-01 | 3/9 Design control — primary reference U.S. Government activity |
| 5305-17 | 5/1 Secondary reference Defense Logistics Agency Dba Defense Supply Center Philadelphia |
| 1-160-265-01 | C/1 Advisory reference — outside the item-of-supply concept Ozark Aeroworks Llc |
NSN 5305-00-830-1643 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-00-830-1643: Screw Surface Treatment: CADMIUM; Fastener Length: 0.620 INCHES NOMINAL IN; Screw Material Document and Classification: AMS 5070 ASSN STD SINGLE MATERIAL RESPONSE; Thread Length: 0.421 INCHES MINIMUM AND 0.436 INCHES MAXIMUM IN. 15 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.