The Screw,machine, cataloged under National Stock Number 5305-01-308-8121, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Chart Inc. - Process Systems Division. 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 | 5305-01-308-8121 |
| Primary Part Number | 2522 004 08031 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Chart Inc. - Process Systems Division |
| Status | ACTIVE |
| Head Height | 2.0 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Screw Surface Treatment | NICKEL |
| Fastener Length | 20.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.5 |
| Thread Length | 19.0 MILLIMETERS MINIMUM AND 20.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 3.0 MILLIMETERS MM |
| Head Style | FLAT CHAMFER |
| Thread Direction | RIGHT-HAND |
| Screw Material | COPPER AND ZINC ALLOY |
| Internal Drive Style | SLOT |
| Thread Series Designator | M |
| Head Diameter | 5.5 MILLIMETERS NOMINAL 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 |
|---|---|
| 2522 004 08031 PRIMARY | Chart Inc. - Process Systems Division (USA) |
NSN 5305-01-308-8121 is a Screw,machine, manufactured by Chart Inc. - Process Systems Division, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-308-8121 has 1 manufacturer part number on file: 2522 004 08031 (Chart Inc. - Process Systems Division).
Key specifications for 2522 004 08031: Head Height: 2.0 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Screw Surface Treatment: NICKEL; Fastener Length: 20.0 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.