Hex Socket Cap Screw DIN7991
1. Description: Hex Socket Cap Screw DIN7991
2. Material: Stainless Steel
3. Surface Treatment: Passivated
4. Size: M6 to M24, 1/4" to 1"
5. Length: Up to 500mm
6. Mechanical Properties: A2/4-50/70
7. Packing: Bulk packing and box packing
We specialize in manufacturing a wide range of bolts, including Socket Cap Screws, Hex Head Screws, Carriage Bolts, Square Head Bolts, and more. Our products adhere to international standards such as DIN, GB, ANSI, ISO, and JIS. We utilize imported equipment, materials, and matrices to ensure the highest quality. In addition to standard items, we also produce custom fasteners tailored to specific needs.
Our company has over 40 years of experience in the fastener industry, with an ISO 9001 certification. We are committed to innovation and continuous improvement, ensuring that our products meet the highest standards. With a skilled workforce and a strong focus on quality control, we guarantee reliable and durable fasteners for various industries, including automotive, construction, and machinery.
Please feel free to contact us if you're interested in our products. We take pride in offering competitive pricing, excellent customer service, and long-term partnerships. Whether you need standard or non-standard components, we are here to support your requirements.
**Technical Delivery Conditions**
| Material | Steel | Stainless Steel | Non-ferrous Metal |
|----------|-------|------------------|--------------------|
| General Requirements | As specified in DIN 267 Part 1 | - | - |
| Thread Tolerance | 6g | - | - |
| Thread Standard | DIN13 Part 12 & 15 | - | - |
| Mechanical Properties | Property class 8.8 | - | - |
| For ≤M20 | A2-70 (CuZn), A4-70 (Copper) | - | - |
| For >M20 | A2-50 (Zinc Alloy), A4-50 (Other) | - | - |
| Mechanical Property Standard | ISO 898 Part 1 | DIN267 Part 11 | DIN267 Part 18 |
| Limit Deviations & Geometrical Tolerance | Product Grade A | - | - |
| Geometrical Tolerance Standard | ISO 4759 Part 1 | - | - |
| Surface Finish | Blackened, Bright | - | - |
| Surface Roughness Standard | DIN267 Part 2 | - | - |
| Surface Discontinuities Standard | DIN267 Part 19 | - | - |
| Electroplating Standard | DIN267 Part 9 | - | - |
| Acceptance Inspection | DIN267 Part 5 | - | - |
**Q&A**
**Who is Lockey?**
Lockey is a fastener manufacturer established in 1973. It is part of the Dragon Iron Group, which specializes in the production and sales of fasteners, hardware parts, forging, and machine parts for the automotive and other industries. The group's headquarters are located in A Lien, Taiwan. Lockey Industrial Co., Ltd. was set up in 2003 in Dongguan City to serve as the foreign sales department of the group. Our plant is based in Jingjiang City, enabling efficient export of our products.
**What does Lockey do?**
As a fastener manufacturer, we produce a wide range of products, including but not limited to:
1. Bolts, studs, and threaded rods
2. Hex nuts, nylon nuts, flange locknuts
3. Tapping screws, drilling screws, wood screws, machine screws, socket cap screws
4. Washers (plain, spring, tooth)
5. Structural applications (ASTM A325/A490, ASTM F1852/F2280, DIN6914/5/6, DIN7990)
In addition, we offer special fasteners, hardware parts, forging, and machine parts for the automotive industry. We supply parts for major brands like Toyota and Honda. Over 70% of our products are exported worldwide.
**Why choose Lockey?**
Lockey never stops innovating. Innovation is the driving force behind our growth and development. We focus on both technological and conceptual innovation to stay ahead in the market. We have a team of experienced professionals who excel in management and cooperation. When you work with us, you can expect high-quality results and a collaborative approach.
We are not just a supplier; we are your partner. We share the latest information on fasteners, price trends, and even profit-sharing opportunities. We care about your success and the quality of our products in use.
**How does Lockey ensure quality?**
With over 40 years of experience and an ISO 9001 certificate, we maintain strict quality control processes. We identify and address potential issues proactively. 80% of our staff are skilled workers with over five years of experience. Employees undergo regular training to improve their skills and ensure consistent product quality.
**Does Lockey produce non-standard items?**
Yes, we do. Please send your specifications or drawings to our sales representative, and we will provide a quotation.
**Do you have a published price list?**
No, we don’t. Market conditions are always changing, so we prefer to be flexible with pricing. Our sales team works closely with customers to provide the best possible price for your order.
**Do you offer discounts?**
Yes, we offer discounts for large orders. However, we believe our sales team provides the best pricing available. While you may receive a small discount, our goal is to deliver value and quality.
**Do you provide samples?**
Yes, we do. Stored samples are free of charge. However, we do not have a budget for express shipping.
**What is the delivery time?**
It depends on the order quantity. Standard items usually take 20–40 days, while non-standard items may take 35–60 days. Please consult with our sales representative for an accurate delivery date.
**What are the payment terms?**
T/T and L/C are preferred. Western Union is also acceptable for low-value payments, such as sample shipping fees.
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TD DYNAMICS CO., LIMITED , https://www.tddynamics.com