Machine Screw — DIN 84 / DIN 85 / DIN 963 / DIN 7985
Machine screws have a uniform machine thread along the full length and a flat tip — designed to thread into a tapped hole or accept a nut. Available in dozens of head styles (pan, round, fillister, countersunk, raised countersunk) and drive types.
Specifications
| Standards | DIN 84 (cheese head slotted), DIN 85 (pan head slotted), DIN 963 (countersunk slotted), DIN 7985 (pan head Phillips), DIN 965 (countersunk Phillips), ISO equivalents |
|---|---|
| Property Class | 4.8, 8.8 |
| Diameter | M2 – M16 |
| Material | Carbon steel, Stainless 304/316, Brass |
| Surface Finish | Plain, Zinc plated, Black, Stainless, Brass |
Frequently Asked Questions
What's the difference between a machine screw and a bolt?
Functionally there is significant overlap, especially at smaller sizes. Generally, a machine screw is smaller (typically below M8), has a uniform thread along the full length, and is intended to be turned into a tapped hole or held with a nut and tightened from the screwdriver/wrench head. A bolt is generally larger and intended to be held by a nut tightened from the nut side. The terminology is loose in practice.
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