Flat Head #1 Square

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Flat Head #1 Square | Custom Nuts and Bolts Manufacturing - Sen Chang

Sen Chang Industrial Co., Ltd., since 1968, is a Flat Head #1 Square | nuts and bolts 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 Head #1 Square

CM008-151131-1

Process: Using multi blow header to make the head and then threading before passivation. Acid washing after heat treating. At last plating and beeswaxing
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, Square depth, Square plug gauge, Total length, Major diameter, Minor diameter, Thread angle, Pitch, Drilling tail diameter, Drilling tail length, Plating inspection
Plating Reports Offered

Features

  • Drilling Machine Thread
  • Black Zinc Plated w/ Thickness being 3u
  • Surface Beeswaxing

Specification

  • Item Specification: M4*11
  • Item Material: 410SS
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