The Screw,machine, cataloged under National Stock Number 5305-01-291-2249, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is International Business Machines Corp Parts Order Center Dept E - 54. 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through both NSN and commercial part number lookups. 1 additional reference document (drawings, advisory and superseded references) is recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-291-2249 |
| Primary Part Number | 1621156 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | International Business Machines Corp Parts Order Center Dept E - 54 |
| Status | ACTIVE |
| Head Height | 1.8 MILLIMETERS NOMINAL MM |
| External Thread Tolerance Class | 6G G |
| Fastener Length | 14.0 MILLIMETERS NOMINAL MM |
| Thread Pitch in Millimeters | 0.5 |
| Thread Length | 13.0 MILLIMETERS MINIMUM AND 14.0 MILLIMETERS MAXIMUM MM |
| Nominal Thread Diameter | 3.0 MILLIMETERS MM |
| Head Style | PAN |
| Thread Direction | RIGHT-HAND |
| Thread Series Designator | M |
| Head Diameter | 6.0 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 |
|---|---|
| 1621156 PRIMARY | International Business Machines Corp Parts Order Center Dept E - 54 (USA) |
| Reference | Meaning |
|---|---|
| 1621156 | 5/9 Secondary reference International Business Machines Corporation Dba IBM |
NSN 5305-01-291-2249 is a Screw,machine, manufactured by International Business Machines Corp Parts Order Center Dept E - 54, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-291-2249 has 1 manufacturer part number on file: 1621156 (International Business Machines Corp Parts Order Center Dept E - 54).
Key specifications for 1621156: Head Height: 1.8 MILLIMETERS NOMINAL MM; External Thread Tolerance Class: 6G G; Fastener Length: 14.0 MILLIMETERS NOMINAL MM; Thread Pitch in Millimeters: 0.5. 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.