Flat Phillips Tapping

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Flat Phillips Tapping | Screw Manufacturing for 50 Years | Sen Chang

Sen Chang Industrial Co., Ltd., since 1968, is a Flat Phillips Tapping | CE certified screw manufacturer based in Taiwan.

ISO 9001 certified self tapping screw production processes and stainless steel screws and bolts with meticulous quality control. Screws and bolts including Machine Screws, Tapping Screws, SEMS Screws, Coating Screws and High Tensile Screws.

Sen Chang has been supplying nuts and bolts to customers, both with advanced technology and 48 years of experience, Sen Chang ensures each customer's demands are met.

Flat Phillips Tapping


Process: Using multi blow headers to make the head, to thread, and then slot before passivation
All the items are inspected during the process and before shipping, complying with ISO Working Instruction
Inspection Tools: Calipers, Protrusion-height gage, Micrometer, 2.5D and 2D projector
Measurement Points: Head diameter, Head height, Phillips Rec depth, Phillips plug gauge, Thread length, Major diameter, Minor diameter, Thread angle, Pitch, Thread cutting lenght


  • 45° Broad Thread Pointed Tail(15°/30°)


  • Item Specification: 8*5/8
  • Item Material: 18-8 SS