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1. Description: High-strength heavy hex bolts made from alloy steel.
2. Material: Alloy Steel
3. Surface Finish: Plain, Zinc Plated, HDG
4. Size Range: M16 - M42, 5/8" - 2"
5. Length: Up to 1000mm
Our business line covers a wide range of high-strength bolts, including:
- A325 Tension Control Bolts
- A449 Tension Control Bolts
- A490 Tension Control Bolts
- DIN6914
For metric threads, we can meet classes 8.8, 10.9, and 12.9. We are committed to providing high-quality fasteners for various industries.
We look forward to hearing from you if you are interested in our products.
Technical Delivery Conditions
Material
Steel
Stainless Steel
Non-ferrous Metal
General Requirements
As specified in DIN 267 Part 1
Thread
Tolerance
6g
Standard
DIN13 Part 12 & 15
Mechanical Properties
Property Class
5.6, 8.8, 10.9
≤M20
A2-70
Subject to agreement
A4-70
>M20
A2-50
A4-50 C3, C4
Standard
ISO 898 Part 1
DIN267 Part 11
DIN267 Part 18
Limit Deviations Geometrical Tolerance
Product Grade
A for product up to size M24 and L ≤ 10d or 150mm; B for product exceeding size M24 or L > 10d or 150mm
Standard
ISO 4759 Part 1
Surface Finish
As processed Property class 8.8 and above: Blackened
Bright
Bright
DIN267 Part 2 shall apply regarding surface roughness DIN267 Part 19 shall apply regarding permissible surface discontinuities DIN267 Part 9 shall apply regarding electroplating DIN267 Part 10 shall apply regarding hot dip galvanizing
Acceptance Inspection
DIN267 Part 5 shall apply regarding acceptance inspection
Q&A
Who is Lockey?
Lockey Industrial Co., Ltd. is a fastener manufacturer established in 1973. It is part of the Dragon Iron Group, which focuses on manufacturing and selling fasteners, hardware parts, forging, and machine parts for the automotive and other industries. The group's headquarters are located in A Lien, Taiwan. Lockey was set up in 2003 in Dongguan City as the foreign sales department of the group. Our plant is based in Jingjiang City, making it easy for us to export our products. You can visit www.lockey-dg.com for more information.
What do Lockey produce?
As a fastener manufacturer, we mainly produce the following:
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. Plain washers, spring washers, tooth washers
5. Structural applications, ASTM A325/A490, ASTM F1852/2280, DIN6914/5/6
In addition, we also manufacture special fasteners, hardware parts, forging, and machine parts for the automotive industry. We supply parts for Toyota and Honda. Approximately 70% of our products are exported.
Why Lockey?
Lockey never stops innovating. Innovation is the driving force behind our growth. Through technological and conceptual innovation, we continue to move forward. We have a team of professionals skilled in management and cooperation. Contacting them will ensure a satisfactory outcome. We are not just a supplier but a partner. We don't only sell products, we share knowledge about fasteners, price trends, and even profit with our clients. We care about your success and the quality of our products.
How does Lockey ensure quality?
With over 40 years of experience in fastener manufacturing and an ISO9001 certificate, we have developed a comprehensive quality assurance system. Our staff includes highly skilled workers who have been with us for more than five years. They undergo regular training to ensure they understand how to prevent and resolve issues effectively.
Do you produce non-standard items?
Yes, we do. Please send your specifications to our sales representative, and we will provide a quotation.
Do you have a published price list?
No, we don’t. Market conditions change frequently, so standard pricing is hard to maintain. Our sales team offers flexible quotes to ensure you get the best price at any time.
Do you offer discounts?
Yes, we do. Discounts are available based on order quantity. However, we believe our sales team provides the best possible pricing. So while you may get a discount, it might not be very large. Feel free to explore further.
Do you provide samples?
Yes, stored samples are free. However, we do not cover express shipping costs.
Delivery Time?
It depends on the order quantity. Standard orders take about 20–40 days, while non-standard ones take 35–60 days. Please consult with your sales representative for an accurate shipment date.
Payment Terms?
We prefer T/T and L/C. Western Union is also acceptable for low-value payments, such as sample shipping fees.
Model NO.: lkop
Application: Construction and Industrial Use
Finish: Plain, Zinc Plated, Hot-Dipped Galvanized (HDG)
Market: Global
Sample: Free if available in stock
Optional Material: Stainless Steel, Carbon Steel, Alloy Steel, Brass
Optional Finish: Passivated, Zinc Plated, HDG
Optional Size: M16 to M42, 5/8" to 2"
Certificate: ISO9001, ISO/Ts16949
Trademark: LK
Transport Package: Bulk Packing, Small Box Packing
Specification: DIN, ANSI, ISO, and Custom
Origin: China
HS Code: 7318
Alloy Steel High Strength Heavy Hex Bolt