Set Screws Half Dog Point
What are Set Screws Half Dog Point?
Half dog point set screws are headless fasteners with a short cylindrical tip that fits into a shallow hole or slot. The shortened “dog” provides positive indexing and repeatable alignment while staying easier to assemble than a full dog point.
Why choose Set Screws Half Dog Point
- Positive indexing — the dog tip locates in a detent or slot to prevent rotation or axial slip.
- Alignment help — repeatable clocking of components to an exact position.
- Headless profile — flush fit for tight clearances and clean appearance.
Common applications for Set Screws Half Dog Point
- Collars, cams, gears, and pulleys with prepared detents
- Indexing levers, knobs, and handles
- Fixtures, jigs, instruments, and precision mechanisms
Materials and finishes for Set Screws Half Dog Point
- Alloy steel black oxide for high strength indoors.
- 18-8 / 304 stainless for general corrosion resistance.
- 316 stainless for marine/coastal environments.
How to size and specify Set Screws Half Dog Point
Order by diameter × thread × overall length and confirm the dog length matches your detent depth. Typical drives are hex-socket.
How Half Dog Point Set Screws compare to other point styles
- Half dog vs full dog — full dog suits deeper holes; half dog fits shallow detents and eases alignment.
- Half dog vs cup — dog indexes in a feature; cup relies on frictional bite on the shaft.
- Half dog vs flat — flat bears on a machined flat with minimal marking.
Installation tips for Set Screws Half Dog Point
- Drill and deburr the detent/slot to fit the dog tip; seat fully before torquing.
- Use threadlocker or a jam screw where vibration is expected.
Set Screws Half Dog Point FAQs
See the accordion below for quick answers on sizing, dog length selection, materials, and when to choose half dog vs other point styles.
To index a part in a shallow hole or slot so it locks in a repeatable position without relying only on friction.
Match the dog to the detent depth so the tip seats fully without bottoming. Leave clearance so the screw clamps the part, not just the dog tip.
Use half dog for shallow detents or when easier alignment is needed; use full dog for deeper holes and maximum anti-rotation.
It contacts only in the detent/slot, minimizing surface marking elsewhere. Avoid cone points if surface finish must be preserved.
Black-oxide alloy for high strength in dry interiors; 304 for general corrosion resistance; 316 for marine/coastal or chloride exposure.
Often yes, indexing resists rotation, but threadlocker or a jam screw helps against vibration.
Order by diameter × thread × overall length (end-to-end). Dog length is specified separately or per the product drawing.