Stainless Steel Carbon Steel Zinc-Coating Buttress Fetter Drive Thread Screw

• Material: Carbon Steel
• Type: Hexagon Head
• Groove: Cross
• Connection: Common Bolt
• Head Style: Hexagonal
• Standard: DIN, GB, ANSI, BSW, JIS, GOST
• Model NO.: EST, UL, ISO, CB, CE
• Grade: 4.8
• Size: 1/4"~1" M2~M22
• Surface Finish: Black/Blue/Clear/Yellow/Gold Zinc Plating
• Head Type: Flat/Hex/Phillips/Cross/Pan
• Material Grade: Stainless Steel/Carbon Steel
• Transport Package: Plastic Bag/Small Box/Bulk Packing etc.
• Specification: 3.5mm(6#)
• Trademark: OEM
• Origin: Tianjin
• HS Code: 731814009
• Production Capacity: 50000pieces/Per Month

Product Description

We can produce kinds of screws like Drywall screws, Chipboard screws, Truss head screws, Hex head screws. Annealed wire and other steel products. We have 9 wire drawing production lines, 2 heat-treatment production lines, 135 machines for making head, 91 machines for making thread, 23 machines for making tails. It helps us offer a fast delivery time to our customers. Our annual production volume reaches 18, 000 tons. 80% of our products are exported. We Mainly export to Asia, South America, Russia, Middle East and other countries. We also can produce special screws according to our customers' requirements. Stable quality and good services are the development tenet we always adhere do. We will continue to practice win-win promise, commit to joint development with partners and create a better tomorrow together. Hope to see you in our Factory. 

 

Buttress Screw

Yellow Zinc Plating refers to the color of the chromate that is applied after zinc has been deposited on to the surface of the part. Yellow chromate prevents the zinc from corroding and increases the overall protection of the finish.

Type:	Buttress Screw
Definition:	Buttress screw: a screw thread in which the driving face is made perpendicular to the axis of the screw (as in a square thread) while the back face makes an angle with the axis (as in a V thread) in order to combine efficiency in the transmission of power with strength.
Description:	What type of thread is Buttress? Buttress threads are specifically designed to handle high axial thrust in one direction. Buttress threads also typically have a higher number of threads per inch which allows increased linear screw motion per turn of the screw similarly to an ACME and Square thread. Buttress threads have a thread where the lines are spaced further apart, making them look more coarse. So they are sometimes called "coarse threads."
Application:	They are most commonly used for leadscrews where the load is principally applied in one direction. The asymmetric thread form allows the thread to have low friction and withstand greater loads than other forms in one direction, but at the cost of higher friction and inferior load bearing in the opposite direction.
Others:	The profile of a buttress thread or saw thread resembles a saw tooth. This makes it possible to transfer immense force along the screw with a flank angle of 30° to 40°.
Feel Free to contact us if you have any questions.

 

 

 

PRODUCTS SHOW:

 

 

 

FAQ
1,How to deal with defects?
Before your shipment ,we will inspect carefully and make sure the product is perfect. And we will provide two year warranty so please kindly to purchase.
2,Can you offer OEM &ODM?
Our company accept OEM&ODM, if your need it, please inform us of your specific requirements.
3,What is the MOQ of your product?
a. Furniture hardware, such as hinge, latch, wooden connector and etc. MOQ=5000pcs
b. Construction hardware, such as anchor pole, bracket and etc. : MOQ=1000pcs
c. Fasteners, such as screw, nut, bolt, washer and etc. :MOQ=1ton
d. Gloves, such as safety glove, examination glove and etc. : MOQ=1000pcs
e. Protective products, such as mask, coverall and etc. : MOQ=1000pcs
4,what's your mode of transportation/shipping?
By sea, By air, By DHL, FedEx, UPS, TNT ,EMS EXPRESS etc.
Of course, you can also specify the mode of transportation as well as tell us your specific requirements.
5,Payment Terms
T/T, L/C, Western Union. Paypal . if you need to pay by other ways, please negotiate with us.
6,Delivery time
7-30days after we receive your prepayment or L/C
7,I don't trust your products quality, can you provide samples?
Yes, we can offer you free samples, but you need to pay the freight. after your first order, the sample freight fee will refund to you.
8,Are you a factory or a trade company?
We are both factory and trade company, welcome to visit our factory at any time.
 We will offer what you want, solve the problems what you have,
just don't hesitate to contact us!