The Screw,machine, cataloged under National Stock Number 5305-01-017-2560, is classified within Federal Supply Class 5305 (Screws) of the Hardware and Abrasives group. Government technical data includes 19 specifications, cited from the U.S. Government catalog. 2 additional reference documents (drawings, advisory and superseded references) are recorded in the U.S. Government catalog. Current acquisition status: Active.
| Parameter | Value |
|---|---|
| NSN | 5305-01-017-2560 |
| Item Name | Screw,machine |
| FSC / FSG | 5305 / 53 — Screws |
| Status | ACTIVE |
| Extended Washer Thickness | 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN |
| Head Height | 0.250 INCHES NOMINAL IN |
| Bearing Surface of Head Surface Finish | 63.0 MICROINCHES |
| Fastener Length | 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Screw Material Document and Classification | AMS 5732 ASSN STD SINGLE MATERIAL RESPONSE |
| Extended Washer Diameter | 0.312 INCHES NOMINAL IN |
| Thread Length | 0.490 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN |
| Hardness Rating | 26.0 ROCKWELL C NOMINAL |
| Nominal Thread Diameter | 0.164 INCHES IN |
| Head Style | DOUBLE HEXAGON W/ HOLE |
| Thread Direction | RIGHT-HAND |
| Width Between Flats | 0.212 INCHES MINIMUM AND 0.220 INCHES MAXIMUM IN |
| Screw Material | IRON ALLOY 660 |
| Thread Class | 3A A |
| Thread Quantity Per Inch | 32 |
| Hole Quantity | 4 |
| Thread Series Designator | UNIFIED NATIONAL COARSE (UNC) |
| Head Hole Configuration Style | HEXAGON LONGITUDINAL HOLE |
| Hole Diameter | 0.047 INCHES NOMINAL 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 |
|---|---|
| R1057P7L | 3/2 Design control — primary reference U.S. Government activity |
| R1057P7L | 5/9 Secondary reference Sps Technologies, Llc Dba Air Industries Company Div Air Industries Company |
NSN 5305-01-017-2560 is a Screw,machine, classified under FSC 5305, Screws. Status: active.
Key specifications for 5305-01-017-2560: Extended Washer Thickness: 0.030 INCHES MINIMUM AND 0.040 INCHES MAXIMUM IN; Head Height: 0.250 INCHES NOMINAL IN; Bearing Surface of Head Surface Finish: 63.0 MICROINCHES; Fastener Length: 0.552 INCHES MINIMUM AND 0.572 INCHES MAXIMUM IN. 19 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.