Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan

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Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan Detail:

Similar to sheet metal screws, but they have a drill-shaped point to cut through sheet metal or steel which eliminates the need for drilling a pilot hole. These self-drilling screws are designed for use in soft steel or other metals.Self-drilling screw points are numbered from 1 through 5, the larger the number, the thicker metal it can go through without a pilot hole. A 5 point can drill a 0.5 in (13 mm) of steel, for example.Self Drilling Screws are used primarily when fastening into steel or other metals and are typically used to join materials like sheet metal. These screws are identified by the unique point or flute at the end of each screw.

The ability of a screw to advance when turned, while creating its own thread versus, say, machine screws which require a pre-threaded nut or other female insert. Self-Tapping screws can cut their own threads as the screw is driven in to the material. They function by having a cutting edge which drills away the material, making a tiny hole for the screw to go into. This has nothing to do with the point of the screw but has everything to do with the threads which are designed to cut through the material.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).

Drywall screws are the best way to fasten the drywall to the base material. With wide range of product and good quality, our drywall screws provide you the perfect solution for different kinds of drywall structures.

A man is fastening the drywall to wood studs with drywall screws.

Mainly used for fastening the drywall panels to metal or wood studs, the drywall screw with fine threads for metal studs and the coarse threads ones for wood studs.

Also used for fastening iron joists and wooden products, especially suitable for walls, ceilings, false ceiling and partitions.

The special designed drywall screws can be used for building materials and acoustics construction.

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Q1: Can you buy a samples placing orders?
A1: Yes,we welcome sample order to test and check quality.Mixed samples are acceptable.

Q2: What’s your leading time?
A2:It depends on the order quantity and the season you place the order.-Usually we can ship within 7-15 days for small quantity,and about 30 days for large quantity.

Q3: What is your payment term?
A3:T/T,Western Union,MoneyGram,and Paypal .This is negotiable.

Q4: What is the shipping method ?
A4:It could be shippied by sea,by air or by express, You can confirm with us before order.

Q5: How do you make your business long-term and good relationship?
A5:We keep good quality, competitive price and Excellent after-sales service to ensure our customers benefit .


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Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures

Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan detail pictures


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Being supported by an highly developed and specialist IT team, we could give technical support on pre-sales & after-sales service for Factory wholesale Self Tapping Screws For Ductwork - Wholesale price can be customized screw series – Dashan , The product will supply to all over the world, such as: Belize, New Zealand, New Orleans, Our company has already had a lot of top factories and qualified technology teams in China, offering the best goods, techniques and services to worldwide customers. Honesty is our principle, skilled operation is our work, service is our goal, and customers' satisfaction is our future!
  • The product manager is a very hot and professional person, we have a pleasant conversation, and finally we reached a consensus agreement.
    5 Stars By Paula from Algeria - 2018.09.23 17:37
    The customer service staff's attitude is very sincere and the reply is timely and very detailed, this is very helpful for our deal,thank you.
    5 Stars By Prudence from Philadelphia - 2017.03.07 13:42
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