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

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Our eternal pursuits are the attitude of "regard the market, regard the custom, regard the science" as well as the theory of "quality the basic, believe in the 1st and management the advanced" for Yellow Zinc Metal Frame Anchor, Chipboard Screw, Nut Bolt, As we are moving forward, we keep an eye on our ever-expanding product range and make improvement to our services.
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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In the past few years, our company absorbed and digested advanced technologies both at home and abroad. Meanwhile, our company staffs a team of experts devoted to the development of Chinese Professional Screw Washers - JIS zinc plated Self Tapping Screw wholesale – Tonghe, The product will supply to all over the world, such as: Azerbaijan, India, Sao Paulo, We also have good cooperation relationships with many good manufacturers so that we can provide almost all of auto parts and after-sales service with high quality standard,lower price level and warmly service to meet demands of customers from different fields and different area.
  • We are old friends, the company's product quality has been always very good and this time the price is also very cheap.
    5 Stars By Emily from Italy - 2018.06.18 19:26
    Company director has very rich management experience and strict attitude, sales staff are warm and cheerful, technical staff are professional and responsible,so we have no worry about product,a nice manufacturer.
    5 Stars By Claire from California - 2018.05.15 10:52

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