Your Professional Bolts Manufacturer

 

Wuxi Lemar Metal Products Co., Ltd. is a professional fastener system service group integrating scientific research, manufacturing, sales and logistics. It follows the business philosophy of "striving for excellence and adhering to integrity" and has established a good image in the field of fastener manufacturing and sales. It has established long-term cooperative relationships with major well-known logistics brands at home and abroad to ensure that products are delivered to customers at the fastest speed and are well received by users.

 

 
  • Class 10.9 Hex Flange Bolt

    NO.:LM-1526. Standard:DIN 6921. Grade:10.9. Material:Carbon steel/Stainless steel

  • Stainless Steel Hex Flange Bolt

    NO.:LM-1525. Type:Hex Flange Screws. Standard:DIN 6921. Material:Carbon steel/Stainless steel

  • Zinc Plated Hex Flange Bolt

    No:LM-1524. Surface treatment:Colored zinc plating. Standard:DIN 6921. Material:Carbon steel/Stainless steel

  • DIN 6921 Hexagon Flange Bolt

    No:LM-1523. Standard:DIN 6921. Material:Carbon steel/Stainless steel. Type:Flange External Hex bolt

  • External Hex Expansion Bolt

    No.:LM-1478. Product Name:Expanding Expansion Bolt. Material:Metal Stainless steel. Brand:Lemarmetal

  • Stainless Steel Expansion Bolts

    No.:LM-1477. Product Name:Expanding Expansion Bolt. Material:Metal Stainless steel. Brand:Lemarmetal

  • Sleeve Type Expansion Anchor Bolts

    No.:LM-1476. Product Name:Expanding Expansion Bolt. Material:Metal Stainless steel. Brand:Lemarmetal

  • Heavy Duty Expansion Bolts

    No.:LM-1475. Product Name:Expanding Expansion Bolt. Material:Metal Stainless steel. Brand:Lemarmetal

  • Masonry Screw Anchor

    No.:LM-1269. Material:Carbon Steel/Stainless Steel. Finish:Yellow Zinc Plated/White Zinc Plated/HDG. Head Style:Hex

  • Drop-in Anchor Bolt

    Number:LM-1262. Material: Carbon Steel. Type: Full Thread Stud Bolts + Anchor. Model Number:Drop In Anchor

  • Bolt Hex HD M16

    No.:LM-1500. Type:Full Thread Hexagon Bolts. Size:M16*190mm. Material:Stainless steel or Galvanized.

  • Embedded Anchor Bolt

    N0.:LM-1248. Product name:Ground anchor bolt. Application:Metal/Buliding/General Industry/Electric Power Cable. Material:Steel. Surface treatment:Zinc plain

First 1234 Last
 
Why Choose Us
 

Technical team support
Possess full process manufacturing capabilities and experimental research and development capabilities for fasteners. With strong technical strength and 3D marketing network, it has more than 100,000 enterprise-level users and serves 57 industries.

 

Production Equipment
Our company has cold heading machines, thread rolling machines, wire drawing machines, thread rolling machines, tapping machines, vibration plate automatic assembly and other processing and feeding equipment.

 

Sales Market
Lemar Assisting scientific research enterprises,exported to Europe,North America, Africa, Central Asia, Middle East.

 

Bolts - Overview

 

 

A bolt is a type of mechanical fastener, typically made of metal, that is used to hold objects together. It's characterized by a threaded shaft and a head, designed to be inserted through holes in assembled parts and secured with a nut on the opposite side, creating a strong clamping force.

 

Product Specification
 

We provide the Hexagon Flange Bolt specifications:

Thread Spec. d

M5

M6

M8

B

L<120

16

18

22

120

/

/

28

Dc

MAX

11.8

14.2

18

K

MAX

5.4

6.6

8.1

S

MAX

8

10

13

MIN

7.64

9.64

12.57

Ds

MAX

5

6

8

MIN

4.82

5.82

7.78

 

Advantages of Bolts

 
 
01
 

High load capacity

Can handle heavy loads and provide significant clamping force – perfect for structural and heavy-duty applications.

 
02
 

Secure fastening

Provides a robust and secure connection.

 
03
 

Versatile

Bolts can be used in a wide range of materials and applications, including structural, automotive, and industrial settings.

Stainless Steel Expansion Bolts

 

Common types

 
External Hex Expansion Bolt

An External Hex Expansion Bolt, also known as an expansion anchor, is a type of fastener used to secure objects to concrete, masonry, or other solid materials. It works by creating an expanding force within a drilled hole, providing a secure and reliable anchor point.

Sleeve Type Expansion Anchor Bolts

Sleeve Type Expansion Anchor Bolts, as the name suggests, is the bolt to fix purpose through expansion force. It is mainly composed of bolt rods, expansion pipes and washers. When we screw the bolt into expansion tube, the tube will expand, and then produce close friction with the substrate (such as concrete, brick wall, etc.), so as to achieve the purpose of fixing the bolt.

Masonry Screw Anchor

Masonry Screw Anchor is a combination anchor bolt used to connect concrete and steel structures. Its construction features six raised corners that allow the anchors to be welded together with steel bars. During installation, the anchor bolt automatically cuts through the steel bar at the weld, creating a strong connection. This type of anchor is suitable for various types of buildings, such as Bridges, high-rise buildings, tunnels, etc.

Drop-in Anchor Bolt

Drop-in Anchor Bolt is special expansion bolt designed so that almost no marks are visible on the surface after installation. ‌ This type of bolt usually consists of an expansion bolt sleeve and a bolt. The working principle is that the expansion of the expansion bolt sleeve on the concrete or brick masonry wall or foundation is used to anchor the bolt.

Embedded Anchor Bolt

Embedded Anchor Bolt is also known as anchor plate anchor bolt, welded anchor bolt, anchor claw type anchor bolt, reinforcement plate anchor bolt, anchor bolt, anchor screw, anchor wire, etc. It is specially used to be buried in concrete foundation and used as the base for fixing various machines and equipment. 7-character anchor bolt is the most commonly used anchor bolt.

 

Sleeve Type Expansion Anchor Bolts

 

Application of Bolts

High load-bearing requirements: Typically used in applications where there's a significant load or stress that needs to be supported. They're ideal for situations where strength and stability are paramount.


Applications: Construction, oil & gas pipes, heavy machinery

 

Adjustability: Easy adjustability since they're used in combination with nuts. If you need to fine-tune the tension or alignment of parts, bolts are a better choice.


Applications: Automotive suspension systems, conveyor systems

 

Disassembly and maintenance: Suitable for applications where disassembly for maintenance, repair, or future modifications is necessary. You can simply remove the nut to disassemble the components.


Applications: Solar panels, construction equipment, manufacturing machinery

 

 

Material of Bolts

Stainless Steel Fasteners
Stainless steel is made from chromium and nickel. Chromium makes the metal highly corrosion-resistant and, therefore, long-lasting. The carbon properties prevent it from hardening effectively, making it stronger than most grade 2 plates of steel.

 

Carbon Steel Fasteners
Most bolts and screws are made from grade 2, 5, or 8 carbon steel.

  • Grade 2: Inexpensive but least durable.
  • Grade 5: Common in the automotive industry.
  • Grade 8: Often used in mechanical applications like vehicle suspension systems.

You'll also come across alloyed carbon steel. Alloy steel offers low corrosion resistance. But it typically needs an additional coating to make it less brittle.

 

Bronze and Brass Fasteners
Bronze fasteners don't rust very often because they contain tin and copper alloy. The quality makes it ideal for aquatic-based applications like underwater construction.
Brass is an alloy of copper and zinc. It boasts similar electric conductivity and anti-corrosive properties as bronze. On the downside, brass is relatively softer and has lower tensile strength.

Heavy Duty Expansion Bolts

 

Customization Process

 

Requirement Discussion

Contact us and provide your design drawings, size specifications, and other technical parameters.

01

Design Proposal

Our professional team will develop a design proposal and provide a quotation based on your requirements.

02

Sample Production

We produce samples according to the design proposal and conduct rigorous testing.

03

Mass Production

Upon your approval, we commence mass production to ensure timely delivery and consistent quality.

04

After-Sales Service

We offer ongoing technical support and service to ensure the long-term stable operation of our products.

05

 

Galvanized Expansion Bolts

 

Other Services
  • Surface treatment: Plain, Galvanized, Hot Dip Galvanized, Black Oxide, Anodized, etc.
  • Excellent quality control system for fine dimensional accuracy.
  • Various materials are available as per your request
  • Conform to international standard.
  • We had got certificate of ISO9001: 2008, SGS & RoHS.
  • Prompt delivery.
  • Various sizes are available.
  • Material: Stainless Steel 18-8 18-10, Carbon steel Gr4.8 Gr8.8 Gr10.9, Gr12.9, Aluminum, Copper, etc.
  • Packing Stylet: General export packing
  • Can be made with different standards such as ISO, DIN, AS/NZS, GB, ANSI, BS and special standard.
  • Good customer service
  • OEM is available

 

Package & Delivery

 

Package: Standard export package
Delivery: By air express, by sea

 

productcate-1-1

 

FAQ

 

Q: What types of bolts are available, and how do I choose the right one for my project?

A: We carry blind bolts, carriage bolts, eye bolts, flange bolts, heavy hex bolts, machine bolts, self-sealing hex bolts, square head bolts, and vibration resistant bolts. Your choice depends on material, threading, environmental exposure, and structural load requirements.

Q: How are bolts measured?

A: Bolts are measured by diameter (e.g., M10, M12), length (from under the head), and thread pitch (distance between threads). Metric and standard sizes are both available.

Q: Can I buy bolts in bulk or large quantities?

A: Yes. We specialize in serving B2B customers with bulk bolt orders, available by the box, carton, or pallet. Custom quotes and volume pricing are available.

Q: What materials and finishes are available for your bolts?

A: We offer bolts in stainless steel, zinc-plated steel, titanium, and galvanized finishes. Each material offers benefits like corrosion resistance, strength, and chemical resistance for specific use cases.

Q: What’s the difference between bolts and screws?

A: Bolts typically require a nut and pre-drilled hole, while screws often tap directly into materials. Screws are better for lighter-duty fastening, where bolts may be overkill.Hexagon Flange Bolt

Q: Q: Are you manufacturer or trading company?

A: We are manufacturer.

Q: What's your best delivery time?

A: Within 15-30 days.

Q: What is the quality control of your product?

A: Follow strictly quality control measures for implementation,

Q: Will your company provide free sample?

A: It depends on which sort of item you want to get. Some can be provided free of charge, however, the client shall assume the shipping fees himself.

Q: Is OEM open to clients?

A: Yes, we can provide both OEM and ODM service.

Q: How can our company be your distribution partner?

A: We welcome you to be our distributor. For further details, please contact us.

Q: What is the payment of sample?

A: T/T and Alipay both acceptable.

Q: What is your sample policy?

A: If we have stock, we can provide samples, but the customer must pay the sample fee and express fee Question.

Q: Have you tested all your goods before shipment?

A: Yes, we will conduct 100% test before delivery, and we will send detailed photos of parts for your approval Question.

We're well-known as one of the leading bolts manufacturers and suppliers in China. If you're going to wholesale high quality bolts made in China, welcome to get pricelist and free sample from our factory. Also, OEM service is available.

bolts, Antiluce Drop Lock

Send Inquiry