The Screw,machine, cataloged under National Stock Number 5305-01-348-8097, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. The manufacturer of record is Sae International Dba Sae International. Government technical data includes 18 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through both NSN and commercial part number lookups. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog.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 | 5305-01-348-8097 |
| Primary Part Number | MS9559-18 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Manufacturer | Sae International Dba Sae International |
| Status | ACTIVE |
| Extended Washer Thickness | 0.030 INCHES MINIMUM IN |
| Head Height | 0.230 INCHES NOMINAL IN |
| Bearing Surface of Head Surface Finish | 32.0 MICROINCHES |
| Fastener Length | 1.250 INCHES NOMINAL IN |
| Screw Material Document and Classification | AMS5731 ASSN STD SINGLE MATERIAL RESPONSE |
| Extended Washer Diameter | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.638 INCHES MINIMUM AND 0.678 INCHES MAXIMUM IN |
| Shank Surface Finish | 32.0 MICROINCHES |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | DOUBLE HEXAGON W/ HOLE |
| Thread Direction | RIGHT-HAND |
| Thread Surface Finish | 32.0 MICROINCHES |
| Width Between Flats | 0.2188 INCHES NOMINAL IN |
| Screw Material | IRON ALLOY 660 |
| Internal Drive Style | W/O INTERNAL DRIVE |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 36 |
| Thread Series Designator | UNIFIED NATIONAL JOINT FINE (UNJF) |
| 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 |
|---|---|
| MS9559-18 PRIMARY | Sae International Dba Sae International (USA) |
| Reference | Meaning |
|---|---|
| MS9559-18 | 5/9 Secondary reference U.S. Government activity |
| MS9559-18 | 3/9 Design control — primary reference U.S. Government activity |
NSN 5305-01-348-8097 is a Screw,machine, manufactured by Sae International Dba Sae International, classified under FSC 5305, Screws. Status: active.
NSN 5305-01-348-8097 has 1 manufacturer part number on file: MS9559-18 (Sae International Dba Sae International).
Key specifications for MS9559-18: Extended Washer Thickness: 0.030 INCHES MINIMUM IN; Head Height: 0.230 INCHES NOMINAL IN; Bearing Surface of Head Surface Finish: 32.0 MICROINCHES; Fastener Length: 1.250 INCHES NOMINAL IN. 18 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.