Home » Products » Screw » Self Tapping Screw » DIN 7981 ISO 7049 Full Thread Zinc Plated Carbon Steel Cross Phillips Driver Pan Head Self Tapping Screw

DIN 7981 ISO 7049 Full Thread Zinc Plated Carbon Steel Cross Phillips Driver Pan Head Self Tapping Screw

A self-tapping screw is a screw that can tap its own hole as it is driven into the material. More narrowly, self-tapping is used only to describe a specific type of thread-cutting screw intended to produce a thread in relatively soft material or sheet materials, excluding wood screws. Other specific types of self-tapping screw include self-drilling screws and thread rolling screws.

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.


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Model:
DIN7981
Brand:
Weifeng/Oem
Code:
DIN7981

Self Tapping Screw self-tapping screw pan head self tapping screw pan self tapping screw philips pan head self tapping screw pan head self-tapping screw pan head phillips self tapping screw

Product Description

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Product Description

Din 7981 cross pan head self tapping screw generally does not need the self tapping screw used with nut. The head is semicircular, the thread is self tapping and the tail is tapered. When din7981 self tapping screw is screwed into the workpiece hole to be tightened, the internal thread is formed in the hole by extrusion and a reliable locking thread connection is formed.

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Company Video

Established in 2003, our company is a global industry and trade combined company. Our company is specialized in developing, manufacturing, trading and providing services for fasteners and hardware tools. We are located in Yuyao, a city famous for plastic and hardware products.

Our company is specialized in all series of fasteners, such as anchors, screws, bolts, nuts and tools. With more than 12 years' experience in this field, our company can offer products in accordance with different standards such as GB, DIN, JIS and ANSI. Our products are sold to more than 100 different countries. In addition, our company also accepts orders of special specifications as per customers' requirement.

Our company has a highly qualified working team with comprehensive knowledge, studious attitude and youthful spirit.

Our company focuses on credit and develops win-win and multilateral-win cooperation under the principle of mutual benefits, regarding contract and keeping faith.

During the new century, based on intensive trading, our company keeps on fully developing distribution on the network. With the idea of customer first, energetically providing increasing services based on the resource, we are delicate to becoming a manufacturing and trading enterprise of fasteners with high quality services.

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Comment & FAQ

Q: Are you a trading company or a manufacturer?

A: We are A factory.

Q: What is your lead time?

A: Generally speaking, we can deliver the goods together if it is available 2-5 days. lf the quantity is 1-2 containers, we can give you 30-45 days. lf the quantity is more than 2 containers and you are in a hurry, we can ask the factory to give priority to the production of your goods.

Q: Do you provide samples? ls it free or extra?

A: For new customers, we can provide samples of standard fasteners free of charge, but the Courier charges will be paid by the customer. For regular customers, we will send samples to you free of charge, and we will pay the express cost by ourselves.

Q: What are your terms of payment?

A: We can accept T/T for general orders, l/C, small orders or sample orders. We can accept Paypal and Western Union. Payment= $1000.100% in advance.Payment= S1000, 30% T/T in advance, balance before shipment.

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