Twist-off-Type Tension Control Bolt Assemblies

• Material: Alloy Steel
• Type: Round Head
• Connection: Steel Structure
• Shipping Cost: Estimated freight per unit.: about shipping cost and estimated delivery time.
• Currency: US$
• Return&refunds: You can apply for a refund up to 30 days after receipt of the products.
• Model NO.: HYZF185207
• Head Style: Round
• Standard: ASTM F3125
• Application: Machinery, Chemical Industry, Environmental, Building, Steel Structure
• Finish: Black
• Other Finish: Hot DIP Galvanized
• Pitches: Unc
• Thread Type: Partial Thread
• Set: 1bolt+1nut+1washer
• Transport Package: Cartons and Pallets
• Specification: 3/4"X3.1/2"
• Trademark: HYZ A325 TC
• Origin: China
• HS Code: 731815
• Production Capacity: 5 Million Sets/Month
• Package Size: 113.00cm * 80.00cm * 53.00cm
• Package Gross Weight: 894.480kg

Product Description

Product Description

 

Our Tension control bolt (TC bolt) is a heavy duty bolt used in steel frame construction. The head is usually domed and is not designed to be driven. The end of the shank has a spline on it which is engaged by a special power wrench which prevents the bolt from turning while the nut is tightened. When the appropriate tension is reached the spline shears off.  

Product Name	Twist Off Type Tension Control Structural Bolt/Nut/Washer Assemblies
Place of Origin	China
Material	Alloy steel: ML40Cr(bolt),SWRCH45K(nut),45#(washer)
Surface treatment	Hot Dip galvanized,Dacromet,Black,Phosphorus saponification
Set	1bolt+1nut+1washer
Grade	ASTM F3125(Grade F1852)
Diameter(inch)	3/4"
Length(inch)	1-3/4"
Head Marking	HYZ A325 TC
Certificates	CE,SGS,ISO 9001,FPC BC1
Available standard	ASTM F2280,JSS II-09:1996,EN14399,GB/T3632-2008

 

1.Dimensions:

2.Mechanical Properties:
1.)Property Grade:

Bolt	Nut	Washer
f1852	A563 DH(A194 2H)	F436

2.)Mechanical Property Requirements for Specimens Machined from Bolts:

Item	Tensile strength   (PSI)	Yield strength   (PSI)	Elongation   (%)	Reduction of area   (%)
Standard Value	120 000	92 000	14	35
Test result	135 500	109 850	15.6	52

3.)Hardness Requirements for BOLT, nut and washer:
 

Bolt	Nut	Washer
HRC25~34	HRC24~38	HRC26~45

 

3.Installation Instructions:

 

Certifications

 

Packaging & Shipping

1.) 25 kgs per carton,36 cartons/900KG per pallet.
2.) 1 x 20' GP container can load about 20-28 pallets.

2.More variety of package(Customized package):

We also support more types of packaging or custom packaging,such Wooden cases, iron barrels ect...

For customization, please do not hesitate to contact us!

Company Profile

Hangzhou Jiaxiang Gaoqiang Bolts Co., Ltd. is founded in 2007 with registered capital of RMB 30 million and is professionally engaged in manufacturing high-strength bolts with large hexagon heads for steel structures, torsion and shear type high strength bolts and shear studs.
Located in Jinhua Industrial Park, Xiaoshan District, Hangzhou City, our plant covers an area of 22,000 square meters with convenient transportation and beautiful environment. It's two-hour drive to Shanghai and Ningbo Ports. Our company has strong technical force, advanced production equipments and testing equipments.

Our products cover 8.8S-10.9 S-Class. Our leading products of 10.9S high-strength large hexagon bolt pairs, torsion and shear type bolted pairs and welding studs are mainly used for railways, bridges, large industrial plants, high and super high-rise buildings, convention centers, sports stadiums and other large constructions. The annual production capacity is  1,500 million pieces. We are a member of China General Machine Components Industry Association and Shanghai Association of Fastener Industry Association of Metal Structures, and have passed ISO9001:2000 quality system certification.With high-quality products and reasonable prices, we warmly welcome customers to cooperate with us.  

        
                                                 

Project Reference

 

FAQ

Q: Are you trading company or manufacturer ?
A: We JIAXIANG BOLTS, founded in 2007, is the leading manufacturer in China for shear connector and high strength bolts.

Q: How long is your delivery time?
A: It we have stock, it takes about 3 days to deliver. If no stock, it takes about 7-15 days to deliver for 1X20"GP container.

Q: Do you accept small order?
A: Yes, we accept small order,Because our stock of all bolts is over 100 tons!And we also accept customization, we can customize the customer's brand, can also customize the brand packaging for the customer!

Q: Why Choose us?
A: 1)We have the most advanced production equipment in China, the quality is more reliable, the price is more affordable!
2)We are a well-known supplier in China, and our brand is also top, so the after-sales service is more guaranteed!
3)All of our service personnel have more than 10 years of trade experience for steel structure bolt!

Q: Do you have Quality Control Department?
A: Yes! Not only for that, our testing center has been granted as National Enterprise Technology Center. All the QC employees are qualified with national certificates. Our forward-looking technology allows to implement the testing requirements which is stricter than national standards.

Q: What is your terms of payment ?
A: T/T or L/C are accepted!