The Screw,machine, cataloged under National Stock Number 5305-01-224-3728, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Viavi Solutionsllc. 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-224-3728 |
| Primary Part Number | 21837/633 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Viavi Solutionsllc |
| Status | ACTIVE |
| Head Height | 3.42 MILLIMETERS MINIMUM AND 3.60 MILLIMETERS MAXIMUM MM |
| External Thread Tolerance Class | 6G G |
| Screw Surface Treatment | ZINC |
| Fastener Length | 59.40 MILLIMETERS MINIMUM AND 60.60 MILLIMETERS MAXIMUM MM |
| Thread Pitch in Millimeters | 1.0 |
| Thread Length | 57.4 MILLIMETERS MINIMUM AND 58.6 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 6.0 MILLIMETERS MM |
| Head Style | PAN NO. 2 |
| Thread Direction | RIGHT-HAND |
| Screw Material | STEEL PROPERTY CLASS 4.8 |
| Internal Drive Style | SLOT |
| Thread Series Designator | M |
| Head Diameter | 11.57 MILLIMETERS MINIMUM AND 12.00 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 |
|---|---|
| 21837/633 PRIMARY | Viavi Solutionsllc (USA) |
| Reference | Meaning |
|---|---|
| 21837-633W | 5/9 Secondary reference Marconi Electronics Inc Marconi Instruments Div |
| 21837-633W | 5/9 Secondary reference Viavi Solutionsllc |
NSN 5305-01-224-3728 is a Screw,machine, manufactured by Viavi Solutionsllc, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-224-3728 has 1 manufacturer part number on file: 21837/633 (Viavi Solutionsllc).
Key specifications for 21837/633: Head Height: 3.42 MILLIMETERS MINIMUM AND 3.60 MILLIMETERS MAXIMUM MM; External Thread Tolerance Class: 6G G; Screw Surface Treatment: ZINC; Fastener Length: 59.40 MILLIMETERS MINIMUM AND 60.60 MILLIMETERS MAXIMUM 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.