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NAS560HK4-17
Machine Screw
Description
Fastener Length: 1-39/64", Thread: 1/4-28, Thread Length: 9/16
Specifications
| Countersink Angle | 99.0 degrees minimum and 101.0 degrees maximum |
|---|---|
| Fastener Length | 1.573 inches minimum and 1.618 inches maximum |
| Hardness Rating | 248.0 brinell standard minimum and 321.0 brinell standard maximum |
| Head Diameter | 0.452 inches minimum and 0.510 inches maximum |
| Head Style | Flat countersunk |
| Internal Drive Style | Cross recess type 1 |
| Length | 1 39/64 |
| Material | Iron |
| Min. Tensile Strength (psi) | 140000 pounds per square inch |
| Screw Material | Iron alloy 660 |
| Screw Material Specification | Ams 5735 assn std 1st material response or ams 5733 assn std 2nd material response |
| Thread Class | 3a |
| Thread Diameter | 0.250 |
| Thread Direction | Right-hand |
| Thread Length | 0.425 inches minimum and 0.571 inches maximum |
| Thread Qty | 28 |
| Thread Qty Per Inch (tpi) | 28 |
| Thread Series Designator | UNF |
| Thread Size | 1/4 |
Cross-reference
No interchangeable or dimensionally similar parts are on record for NAS560HK4-17. Try the cross-reference lookup to search by a different part number.
Catalog data updated 2026-07-05. Report a data error