L-Shape 6-Lobe Drive Wrench / 45 years of experiences for production stainless steel fasteners.

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Wrench | Screw Manufacturing for 50 Years | Sen Chang

Sen Chang Industrial Co., Ltd., since 1968, is a Wrench | 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.



All the items are inspected during the process and before shipping, complying with ISO Working Instruction
Inspection Tools: Calipers, Micrometer, 2.5D and 2D projector
Measurement Points: Across the flat and corner, Height, Inside diameter
Measurement Points: Long flat, Short flat, Rec inside diameter


  • T25 6-Lobe Drive + PIN Wrench Rec
  • Sandblasting
  • L-Shape


  • Item Specification: 65*20mm
  • Available Material: CRV

Available Product

  • T4~~T100