**Grade 8 Hex Bolt for Machine**
1. Description: Grade 8 Hex Bolt for Machine
2. Material: High Strength Steel
3. Surface: Plain
4. Size: M6 to M36, or 1/4" to 1-1/2"
5. Length: Up to 800mm
6. Mechanical Properties: Grade 8
7. Packing: Bulk packing and box packing
We are a professional manufacturer of bolts including hex head screws, carriage bolts, square head bolts, and more. Our products comply with international standards such as DIN, GB, ANSI, ISO, and JIS. We use imported equipment, materials, and molds to ensure high-quality production. In addition to standard products, we also offer custom-made fasteners tailored to specific requirements.
If you're interested in our products, please feel free to contact us. With over 40 years of experience in the fastener industry, we guarantee the best quality and service.
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### **Technical Delivery Conditions**
| **Material** | Steel | Stainless Steel | Non-ferrous Metal |
|--------------|-------|------------------|--------------------|
| **General Requirements** | As specified in DIN 267 part 1 | - | - |
| **Thread Tolerance** | 6g | - | - |
| **Thread Standard** | DIN 13 Part 12 & 15 | - | - |
| **Property Class** | 5.6, 8.8, 10.9 | A2-70, A4-70 | C3, C4 |
| **Standard for Property Class** | ISO 898 Part 1 | DIN 267 Part 11 | DIN 267 Part 18 |
| **Limit Deviations and Geometrical Tolerance** | Product grade A (up to M24, L ≤ 10d or 150mm), B (exceeding M24 or L > 10d or 150mm) | - | - |
| **Standard for Limit Deviations** | ISO 4759 Part 1 | - | - |
| **Surface Finish** | Blackened (for property class 8.8 and above), Bright | Bright | Bright |
| **Surface Roughness** | DIN 267 Part 2 | - | - |
| **Permissible Surface Discontinuities** | DIN 267 Part 19 | - | - |
| **Electroplating** | DIN 267 Part 9 | - | - |
| **Hot Dip Galvanizing** | DIN 267 Part 10 | - | - |
| **Acceptance Inspection** | DIN 267 Part 5 | - | - |
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### **Q&A**
**Who is Lockey?**
Lockey is a fastener manufacturer established in 1973. Dragon Iron Group focuses on the production and sale of fasteners, hardware parts, forging, and machine parts for the automotive and other industries. The group’s headquarters is located in A Lien, Taiwan. Lockey Industrial Co., Ltd. was set up in 2003 in Dongguan City as the foreign sales department, while the main plant is in Jingjiang City, making it easier for us to export our products globally.
**What does Lockey do?**
As a fastener manufacturer, we produce a wide range of products, including:
1. Bolts, studs, and thread 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 like ASTM A325/A490, ASTM F1852/2280, DIN 6914/5/6, DIN 7990
We also manufacture special fasteners, hardware parts, forging, and machine parts for the automotive industry, supplying parts for brands like Toyota and Honda. Approximately 70% of our products are exported.
**Why choose Lockey?**
Innovation is at the heart of everything we do. With over 40 years of experience, we continuously improve our technology and business concepts. We have a team of skilled professionals who are committed to quality, efficiency, and customer satisfaction.
We don’t just sell products—we build partnerships. We share the latest information about fasteners, price trends, and even profit with our clients. We are not just a supplier; we are your long-term partner and friend.
**How does Lockey ensure quality?**
With an ISO 9001 certification and over 40 years of manufacturing experience, we maintain strict quality control throughout the production process. We’ve developed comprehensive quality assurance systems based on factors that could affect product quality. 80% of our staff are skilled workers with over 5 years of experience, and they undergo regular training to ensure they can prevent and handle any issues effectively.
**Do you produce non-standard items?**
Yes, we do. If you have a drawing or specification, send it to our sales representative, and we’ll provide a quotation.
**Do you have a published price list?**
No, we don’t. Market conditions fluctuate, so we prefer to keep pricing flexible. Our sales team will provide the best possible price for your order.
**Do you offer discounts?**
Yes, we offer discounts based on order quantity. However, our sales team ensures you get the best price available, so the discount may not be very large.
**Do you provide samples?**
Yes, stored samples are free. However, we do not cover the cost of express shipping.
**What is the delivery time?**
It depends on the size of your order. Standard items take 20–40 days, while non-standard items may take 35–60 days. Please consult with your sales representative for an accurate timeline.
**What are the payment terms?**
Preferred payment methods are T/T and L/C. Western Union is also accepted for small payments like sample shipping fees.
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