GB-T 14 Cup Head Square Neck Bolts
Product: GB-T 14 Cup Head Square Neck Bolts
Property Class:4.6,4.8,5.6,5.8,8.8,10.9,12.9,A2-70, A4-70,A4-80
Finish:Zinc Plating（Yellow Zinc, Zinc Blue, Rinse Color), Black, Phosphate & Oil, Zinc Phosphate, Hot-dip Galvanized(HDG),Dacromet, Geomet
Material:Steel
Export country: USA, Japan, Australia, Europe and so on
Support customer customization
Carriage bolts are divided into large semi-round head carriage bolts and small semi-round head carriage bolts according to the head size.
Pictures
Product drawing
Product Specification
Size | M5 | M6 | M8 | M10 | M12 | M16 | M20 | |
P | 0.8 | 1 | 1.25 | 1.5 | 1.75 | 2 | 2.5 | |
e min | 5.9 | 7.2 | 9.6 | 12.2 | 14.7 | 19.9 | 24.9 | |
dk | max | 13 | 16 | 20 | 24 | 30 | 38 | 46 |
min | 11.9 | 14.9 | 18.7 | 22.7 | 28.7 | 36.4 | 44.4 | |
ds | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
min | 4.48 | 5.35 | 7.19 | 9.03 | 10.86 | 14.70 | 18.38 | |
k | max | 3.1 | 3.6 | 4.8 | 5.8 | 6.8 | 8.9 | 10.9 |
min | 2.5 | 3 | 4 | 5 | 6 | 8 | 10 | |
k1 | min | 2.9 | 3.4 | 4.4 | 5.4 | 7.2 | 11.1 | 14.1 |
max | 4.1 | 4.6 | 5.6 | 6.6 | 8.8 | 12.9 | 15.9 | |
s | max | 5.48 | 6.48 | 8.58 | 10.58 | 12.7 | 16.7 | 20.84 |
min | 4.52 | 5.52 | 7.42 | 9.42 | 11.3 | 15.3 | 19.16 | |
r max | 0.4 | 0.5 | 0.8 | 0.8 | 1.2 | 1.2 | 1.6 | |
Support customer customization | ||||||||
Application
Our merchandise are extensively used in mechanical, electrical, automotive, constructing construction, railways, bridges, steamships, fireplace safety and verbal exchange system, etc.
Some introduction about our company
Workshop
Certification
Through scientific management, Jinan Star Fastener Co., Ltd. has obtained the 2015 version of ISO9001 quality management system certification. In 2017, the laboratory passed the national CNAS certification. In 2018, the company passed the European CE certification.
Testing Equipment
Star Fastener corporation has a specialised laboratory with digital hardness testers, microscopes, regularly occurring checking out machines, axial pressure meters, hydrogen embrittlement detection devices, magnetic particle flaw detectors, metallographic analyzers, carbon and sulfur analyzers and salt spray checking out machines, etc. Experimental trying out gear is used to behavior complete trying out of the chemical composition of uncooked materials, product hardness, mechanical properties, coating thickness and corrosion resistance to make certain that all merchandise meet trendy necessities and fulfill customers.
Production equipment
Our company has more than 300 production equipment.The product production process includes: Annealing, shot blasting, cold heading, thread rolling, heat treatment, galvanizing, finished product testing, packaging, etc. are all completed in the company.
Packing
Our service:
1. Customize best fasteners: Customize offerings primarily based on the samples and drawings provided.
2. Cost-effectiveness: Wide choice of parts, provided by means of expert factories, and aggressive prices.
3. Professional manufacturer: All our fasteners are designed and manufactured in accordance to buyers' specs and performance.
4. Quality guaranteed: sturdiness trying out and key science layout to enhance the provider lifestyles of fasteners.
5. Perfect fastening options with 60 years of journey to clear up your problems: huge choice of parts.
FAQ
1. Please send catalog?
If you need a catalog, you can leave your email to us and we will send the catalog within 2 working hours.
2. Can you accept using my own logo or design on the merchandise?
Yes, no problem.
3. How do you manipulate your quality?
We require QC to look into each manufacturing hyperlink of every batch of goods. We can supply you with MTC and manufacturing unit certificates after the items are completed.
4. Can I visit your factory?
Certainly. We welcome you to visit our factory at any time. It is better to contact us before coming and let us know your schedule so that we can pick you up from the airport or train station
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