Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe

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We always think and practice corresponding to the change of circumstance, and grow up. We aim at the achievement of a richer mind and body and the living for Nut For Screws, Chipboard Screw, High Strength Screws, Our tenet is "Reasonable prices, economical production time and very best service" We hope to cooperate with much more shoppers for mutual enhancement and benefits.
Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe Detail:

Introduction

Self-tapping screws have a wide range of tip and thread patterns, and are available with almost any possible screw head design. Common features are the screw thread covering the whole length of the screw from tip to head and a pronounced thread hard enough for the intended substrate, often case-hardened.
For hard substrates such as metal or hard plastics, the self-tapping ability is often created by cutting a gap in the continuity of the thread on the screw, generating a flute and cutting edge similar to those on a tap. Thus, whereas a regular machine screw cannot tap its own hole in a metal substrate, a self-tapping one can (within reasonable limits of substrate hardness and depth).
For softer substrates such as wood or soft plastics, the self-tapping ability can come simply from a tip that tapers to a gimlet point (in which no flute is needed). Like the tip of a nail or gimlet, such a point forms the hole by displacement of the surrounding material rather than any chip-forming drilling/cutting/evacuating action.
Not all self-tapping screws have a sharp tip. The type B tip is blunt and intended for use with a pilot hole, often in sheet materials. The lack of a sharp tip is helpful for packaging and handling and in some applications may be helpful for reducing the clearance necessary on the reverse of a fastened panel or for making more thread available on a given length screw
Self-tapping screws can be divided into two classes; those that displace material (especially plastic and thin metal sheets) without removing it are termed thread-forming self-tapping screws; self-tappers with sharp cutting surfaces that remove the material as they are inserted are termed self-cutting.
Thread-forming screws may have a non-circular plan view, such as the five-fold symmetry of the pentalobular or three-fold symmetry for Taptite screws.
Thread-cutting screws have one or more flutes machined into their threads, giving cutting edges.

packaging & delivery

Packaging Details:
1) Sample order, 20/25kg per carton with our logo or neutral package;
2) Large orders, we can custom packaging;
3) Normal Packing: 1000/500/250pcs per small box. then into cartons and pallet;
4) As customers’ require.
Port:Tianjin, China
Lead Time:

in stock No stock
15 working Days To be negotiated

Product detail pictures:

Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe detail pictures

Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe detail pictures

Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe detail pictures


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We constantly think and practice corresponding to the change of circumstance, and grow up. We aim at the achievement of a richer mind and body along with the living for Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe, The product will supply to all over the world, such as: Montpellier, Bahamas, Holland, We have a good reputation for stable quality products, well received by customers at home and abroad. Our company would be guided by the idea of "Standing in Domestic Markets, Walking into International Markets". We sincerely hope that we could do business with car manufacturers, auto part buyers and the majority of colleagues both at home and abroad. We expect sincere cooperation and common development!
  • Product quality is good, quality assurance system is complete, every link can inquire and solve the problem timely!
    5 Stars By Myrna from Egypt - 2017.09.30 16:36
    Factory equipment is advanced in the industry and the product is fine workmanship, moreover the price is very cheap, value for money!
    5 Stars By Nina from Johannesburg - 2017.09.16 13:44

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