1> Description: Stainless Steel, Alloy Steel, Steel, Brass U Bolt
2> Material: Stainless Steel, Alloy Steel, Steel, Brass
3> Surface: Plain, Zinc, HDG...Passivated
4> Size: M5(3/16") up to M24(1")
5> Length: Up to 200mm
6> Mechanical Properties: Class 5.6, 8.8, 10.9 & Grade 2, 5, 8; A2, A4
7> Packing: Bulk packing and box packing and according to customer's requested then in pallet.





The main products for bolts include U Bolt, Hex. Lag bolt(Coach screw), Hex. Bolt, Carriage bolts, Hex. Socket cap screw, Allen Screw, Hex. Flange bolt, Thread Rod, Square Bolt, Hex. Bolt with nuts and some special bolt per the drawing from the client.
If you are interested in our products, please do not hesitate to contact us, then we could quote our best price as soon as we get from you.
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 with regard to surface roughness | |||||
DIN267 Part 19 shall apply with regard to permissible surface discontinuities | |||||
DIN267 Part 9 shall apply with regard to electropiating | |||||
DIN267 Part 10 shall apply with regard to hot dip galvanizing | |||||
Acceptance inspection | DIN267 Part 5 shall apply with regard to acceptance inspection |
Who is Lockey?
Full name Lockey Industrial Co., Ltd. A fastener manufacturer founded in 1973. Dragon Iron Group focuses on the manufacturing and sales of fasteners, hardware parts, forging, and machine parts for automotive and other industries.
Dragon Group has its headquarters, Dragon Iron Enterprise, in A Lien, Taiwan.
Lockey Industrial Co., Ltd. was established in 2003 in Dongguan City as the Foreign Sales Department of the group. Our plant was set up in Jingjiang City, allowing us to easily export our products.http://www.lockey-dg.com/eng_001.htm provides more information.
What does Lockey produce?
As a fastener manufacturer, we mainly produce including, but not only:
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, DIN7990...
Additionally, special fasteners, hardware parts, forging, and machine parts for automotive are also in our range. We make parts for Toyota, Honda.
70% of our products are exported.
Why choose Lockey?
Lockey never stops innovating. Innovation is the driving force behind our development. We focus on both technological and conceptual innovation, helping us stay ahead in the market. We have a team of skilled professionals who excel in management and collaboration. Working with them ensures a satisfying result.
We are glad you chose Lockey as your supplier, but we are more than that—we are partners. We don't just sell; we share. We provide updates on fasteners, price trends, and even profit-sharing opportunities.
We are friends. We care about your success and the quality of our products during use.
How does Lockey ensure quality?
With over 40 years of experience in fastener manufacturing and an ISO9001 certificate, we handle challenges effectively. We have a quality assurance system based on ISO9001, developed with our extensive experience. Criteria are set to address factors that may affect quality. 80% of our staff are skilled and have worked at Lockey for over five years. Employees undergo training to improve their skills and prevent issues.
Do you produce non-standard items?
Yes, we do. Send your specifications to our sales representative, and you will receive a quotation.
Do you have a published price list?
No, we do not have a published price list. Market conditions fluctuate, making standard pricing difficult. Our sales team can offer flexible quotes, ensuring you get the best price available when needed.
Do you offer discounts?
Of course. We can offer you a discount based on large quantities. However, we believe our sales representatives already offer the best possible price. While you might get a small discount, it’s not significant. Feel free to explore further.
Do you provide samples?
Yes, and stored samples are free of charge. However, we do not have a budget for express shipping.
Delivery time?
It depends on your order quantity. Standard orders take about 20-40 days, while non-standard ones take 35-60 days. Contact your sales representative for an accurate shipment date.
Payment terms?
T/T and L/C are preferred payment methods. Western Union is acceptable for low-value payments, such as sample express fees.
plastic pipe making machine in Pipe Extrusion Machine production line
Plastic pipe making machine application:
Plastic pipe application and usage amount is far ahead in the plastic pipe field,good surface hardness and tensile strength, good anti-aging, high safety factor, it is widely used in electrical cable pipe,water supply pipe,drain pipe, agricultural water supply system, architectural water supply system, pavement of cables etc.
Production line with high efficiency single screw extruder and through the spiral or basket type Mould by multi - Crawler traction machine vacuum sizing cooling and. As is known to all, large-diameter PE pipe are tractive pipe variety, KR specially developed rapid traction switching device, so as to solve the the problem. By the appropriate transformation part of the unit, you can achieve a two-layer or multi-layer co extruded, replacing the extruded layer material or add special materials according to the requirements of the use, such as flame retardant, antistatic, corrosion resistance, nano antibacterial materials, greatly improving the pipe use, reduce raw material consumption, thereby reducing the cost of pipes.
Production line using PLC control system, man-machine dialogue interface, simple operation, stand-alone adjustment, the full board linkage, automatic fault alarm, production and reliable.
Plastic Pipe Making Machine,Plastic Tube Making Machine,Plastic Pipe Manufacturing Machine,Plastic Tube Manufacturing Machine
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