Round Head Square Neck Carriage Bolt Zinc
AMERICA DIVISION OF TOP SHINE CO.,LTD. , https://www.fiestasupplier.com
1. Description: Round Head Square Neck Carriage Bolt with Zinc Coating
2. Material: High-quality steel
3. Surface Treatment: Zinc plating for enhanced corrosion resistance
4. Size Range: M5 to M20; 1/4" to 3/4"
5. Length: Up to 200mm (8 inches)
6. Mechanical Properties: Available in Class 6.8, 8.8, and Grade 2, 5
7. Packaging: Bulk packing followed by palletization for secure shipping.
The company specializes in a wide range of bolt types, including carriage bolts, hex bolts, hex socket cap screws, Allen screws, lag bolts (coach screws), hex flange bolts, thread rods, square bolts, and more. Customized bolts can also be manufactured based on customer drawings.
If you are interested in our products, feel free to contact us at any time. We are always ready to assist and provide detailed information.
Technical Delivery Conditions
Material
Steel
Stainless steel
General requirements
As specified in ISO 8992
Thread
Tolerance
8g
Standard
DIN ISO965-1; DIN ISO965-2
Mechanical properties
Property class
4.6, 4.8, 8.8
A2-70, A4-70
Standard
DIN EN ISO 898 Part 1
DIN EN ISO 3506-1
Limit deviations geometrical tolerance
Product grade
C
Standard
DIN EN ISO 4759-1
Surface finish
DIN EN ISO 26157-1 shall apply with regard to permissible surface discontinuities
DIN EN ISO 16048 shall apply with regard to passivation DIN EN ISO 4042 shall apply with regard to electroplating DIN EN ISO 10684 shall apply with regard to hot dip galvanize DIN EN ISO 10683 shall apply with regard to non-electrolytically applied zinc flake coating If different electroplating or other surface protection is desired, this shall be agreed upon at the time of ordering
Acceptance inspection
DIN EN ISO 3269 shall apply with regard to acceptance inspection
Q&A
Who is Lockey?
Lockey is a fastener manufacturer established in 1973. It is part of the Dragon Iron Group, which focuses on the production and sale of fasteners, hardware parts, forging, and machine components for the automotive and other industries. The group has its headquarters in A Lien, Taiwan, while Lockey Industrial Co., Ltd. was set up in Dongguan City in 2003 as the foreign sales department. Our plant is located in Jingjiang City, making it easy for us to export our products worldwide.
What does Lockey do?
As a fastener manufacturer, Lockey produces a wide range of products such as bolts, studs, thread rods, hex nuts, nylon nuts, flange locknuts, tapping screws, drilling screws, wood screws, machine screws, socket cap screws, washers, structural applications, and more. We also manufacture custom fasteners, hardware parts, and machine components for the automotive industry, including parts for Toyota and Honda. Over 70% of our products are exported globally.
Why choose Lockey?
Lockey is committed to innovation, which drives our continuous development. We combine technological and conceptual innovations to stay ahead in the market. Our team consists of skilled professionals who excel in management and cooperation. We don't just sell products—we build long-term partnerships. We share the latest information about fasteners, price trends, and even profit with our clients. We are not just a supplier but a true partner and friend.
How does Lockey ensure quality?
With over 40 years of experience in fastener manufacturing and an ISO 9001 certification, we have a robust quality assurance system in place. We focus on factors that may affect product quality and ensure all our staff are well-trained. 80% of our employees have worked with us for over five years and undergo regular training to prevent and handle any issues effectively.
Can Lockey produce non-standard items?
Yes, we can. If you have specific design drawings, send them to our sales representative, and we will provide a quotation.
Do you have a published price list?
No, we do not. Market conditions fluctuate, so we offer flexible pricing tailored to your needs. Our sales team ensures you get the best possible price.
Do you offer discounts?
Yes, we do. Discounts are available based on order quantity. While we believe our sales team offers competitive prices, larger orders may qualify for additional savings.
Do you provide samples?
We offer free stored samples. However, we do not cover the cost of express delivery for samples.
What is the delivery time?
Delivery times vary depending on the order size. Standard items usually take 20–40 days, while non-standard items may take 35–60 days. Contact your sales representative for an accurate timeline.
What are the payment terms?
We prefer T/T and L/C. Western Union is also accepted for small payments like sample freight.