DONGGUAN ZUFEK PRECISION CO., LTD.
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PRODUCT FAMILY COLLECTION

Compound Structures

Multiple locating features, cross holes, press-in features and mixed threaded sections in one custom part.

Drawing and sample checks

ProductsApplicationWhat to specifyWhat to check
Screws with Integral Locating PinsA local pin or locating extension combines a screw connection with a drawing-defined positioning feature.Provide the mating hole and assembly direction. Confirm which feature locates and which provides the clamp.Verify alignment and insertion with the locating hole.
Double-Ended Shoulder ScrewsTwo threaded ends and a larger central shoulder combine connection and axial location in one part.Include both mating components and explain which end is installed first.Trial each end and verify the assembled axial stack.
Cross-Drilled & Head-Hole ScrewsA radial or transverse hole provides a specified passage for a pin, wire or other assembly element.State the intended retention method and load requirements; a cross hole alone does not establish secure retention.Check the internal intersection and pin or passage clearance.
Multi-Step & Multi-Shoulder ScrewsSeveral diameters and locating faces fit a more complex stack of mating components.Use a datum-based drawing and identify the surfaces that actually locate or carry load.Check diameters and axial distances after finishing.
Custom Clinch Screws & StudsDrawing-specific press-in features can combine a threaded component with a sheet-metal attachment interface.Provide the panel specification and acceptance tests. Do not assume a custom feature shares the ratings of a branded standard clinch part.Trial installation and verify push-out and torque-out as agreed.

Plan the manufacturing route.

Volume, material and functional features determine how the design is produced.

Drawing and sample checks

  1. Reference the bore, step and thread to functional datums
  2. Check their relationship after finishing.
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