Self-drilling Screws - China Self-drilling Screws Manufacturers Suppliers Factory

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Your Professional Self-drilling Screws 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.

Plastic Expansion Wall Plug
No：LM-1536. Material:Carbon steel. Standard:National Standard. Brand:Lemar
Brick Wall Expansion Screws
NO.:LM-1534. Type:Countersunk Head. Linking Method:Combination. Fastener Type:Expansion Bolt
Metal Expansion Tube
NO.:LM-1533. Type:Countersunk Head. Linking Method:Combination. Fastener Type:Expansion Bolt
Wall Anchor For Concrete Wall
No：LM-1532. Type:Countersunk Head. Linking Method:Combination. Fastener Type:Expansion Bolt
Tree Shaped Steel Wall Anchor
No：LM-1531. Type:Countersunk Head. Linking Method:Combination. Fastener Type:Expansion Bolt
Fan Head Screw
NO.:LM-1530. Material:Iron/Carbon Steel. Surface Treatment:Black Nickel/Nickel Plating. Standard:ISO 7046-2-2016
Heat Dissipation Screws Fixer
NO.:LM-1529. Material:Iron/Carbon Steel. Surface Treatment:Black Nickel/Nickel Plating. Standard:ISO 7046-2-2016
Computer Case Fan Screw
No：LM-1528. Material:Iron/Carbon Steel. Surface Treatment:Black Nickel/Nickel Plating. Standard: ISO 7046-2-2016
Cooling Fan Mount Screw
No：LM-1527. Material:Iron/Carbon Steel. Surface Treatment:Black Nickel/Nickel Plating. Standard:ISO 7046-2-2016
Hexagon Head Self Drilling Screw
No.:LM-1446. Drive System:External Hex. Usage:Wood, Metal, Sheet Metal. Surface Treatment:Zinc Plated, Black Oxide. Head Type:Hex
Hex Washer Head Self Drilling Screw
No.:LM-1445. Drive System:External Hex. Usage:Wood, Metal, Sheet Metal. Surface Treatment:Zinc Plated, Black Oxide. Head Type:Hex
Hexagon Drill Tail Screw
No.:LM-1444. Drive System:External Hex. Usage:Wood, Metal, Sheet Metal. Surface Treatment:Zinc Plated, Black Oxide. Head Type:Hex

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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.

Self-drilling Screws - Overview

Self-drilling screws are fasteners with a drill-shaped point that allows them to create their own pilot hole as they are driven into a material. This eliminates the need to pre-drill holes, saving time and effort, especially in applications like sheet metal fabrication or metal frame construction.

Product Specification

We provide the following product specifications：

Screw Size	1/4 in
Drill Point Size	#3
Head Type	Hex Washer
Drive Type	Hex
Material	Steel
Length (Inch)	1
Length Under Head (Inch)	1
Finish Coating	Zinc
System Of Measurement	Inch
Length Measurement Type	Length Under Head
UNSPSC Code	31161528
Country of Origin	VARIOUS

Advantages of Self-drilling Screws

Save Time

Self-drilling screws need no pilot hole to cut and fasten. These screws can drill, tap and fasten all at one go. This saves time and saves you from the extra work of drilling and then fastening. Your time, resources and stress will be simplified using the self-drilling screws.

Anti Corrosion

Self-drilling screws are made up of hard steel or stainless steel that has been treated to increase its hardness. Stainless steel does not get rusted thus it is corrosion free and long-lasting. Self-drilling screws, since are made up of the hard steel are long-lasting they are each customer’s first choice.

Durability

Self-drilling screws also come with accessories that prevent the possibility of rust. The corrosion-resistant surface of the self-drilling screws lasts longer against the deteriorating effects of weathering. This enhances the durability of the screws and has various reapplications and thus it makes the drilling an easy task.

Reduced Preparation

Self-drilling screws do not need any kind of pre-drilling or pre-fixing. Self-drilling provides efficient performance by reducing preparation time and constantly ensures a precise and durable bond. Self-drilling screws have been designed to penetrate or cut directly into the material. This allows the users to cut out the pre-drilling step in the process and create an unbeatable tight thread.

Improved Efficiency

Self-drilling screws require minimum preparation to drill into the materials. As a result of its precise thread that is created by the screw itself, self-drilling screws are also the product of choice for items that are required to be assembled or dissembled. As the screw follows the same thread each time it ensures a strong and consistent bond.

Types of Self-drilling Screws

Unslotted Indented hex washer head (available with serrations too)

Unslotted indented hex washer head with bonded washer under the head (this creates a leak proof seal)

Pan head (with Phillips or square drive)

Flat head

Flat head with reamer with wings (allows you to attach wood to steel)

Modified Truss

Bugle

Pan head framing screws

Wafer

Pancake

Square trim head

Oval

Application

Roofing Applications
Self-drilling screws used for metal roofing installations are uniquely designed with a built-in washer, commonly a bonded neoprene washer, to create a weather-tight seal during fastening. These roofing fasteners prevent water intrusion and are ideal for corrugated metal sheets, steel panels, and cladding systems where leak prevention is critical. Like other self-drilling screws, they feature a drill bit-shaped point that simplifies and speeds up the insertion process, minimizing material fractures and improving overall roof integrity. Choosing stainless steel or coated versions further enhances their resistance to corrosion and harsh environments commonly encountered on rooftops.

Decking Installation
Prior to the invention of self-drilling screws, builders and contractors needed to pre-drill pilot holes before screw insertion, especially for hardwoods and composite decking. The introduction of self-drilling screws has revolutionized this process by eliminating the need for pre-drilling, significantly reducing job time and labor costs while delivering high-speed, precision-driven fastening. These deck screws feature specially hardened drill tips and corrosion-resistant coatings to withstand outdoor conditions and provide lasting, rust-proof performance when securing deck boards to joists. This advancement in decking fastener technology ensures stronger, more reliable connections, minimal material splitting, and an overall cleaner finish.

Sheet Metal Fabrication
Metal sheets are integral to framing, ductwork, enclosure fabrication, and a broad range of industrial products. To speed up the production process and ensure firm, vibration-resistant connections, self-drilling screws are used as industrial fasteners. The self-drilling screw's integral drill tip is uniquely suited for penetrating metals from 20 to 14 gauge, outperforming traditional fastening methods and offering enhanced pull-out resistance. Common applications include HVAC installation, manufacturing steel furniture, automobile assembly, and constructing building facades. The use of advanced materials—such as coated carbon steel, stainless steel, or bi-metal designs—expands their longevity and suitability for both indoor and outdoor applications.

Medical Engineering
In the medical field—especially orthopedics, spinal surgery, organ replacement, and tissue and muscle repair—self-drilling locking screws provide surgeons with efficient, high-performance solutions for bone fixation and implant anchoring. Medical-grade self-drilling screws, often made of titanium or surgical stainless steel, allow for rapid insertion without the need for pre-drilling, reducing operating room time and risk of thermal necrosis in bone. Proper use demands meticulous length calibration and ensuring biomechanical stability. These screws are an integral component in modern trauma plating systems and are regulated under strict quality standards for medical device fasteners.

Other Services

We stock commonly used fasteners including sheet metal screws, machine screws, hex cap screws, and hex lag screws, along with specialty fasteners like sidewalk bolts, tamper-proof screws, and tri-bulb rivets.

Over 18 Million Fasteners

Order as few as one piece, or scale up for large projects. Volume pricing discounts are applied as quantity increases.

Dedicated Support

For OEMs, contractors, MROs, municipalities, wholesale, and industrial buyers.

Easy Online Ordering

Create an account and check out quickly. Choose your shipping speed based on project timelines.

No Quantity Minimums

Get exactly what you need, fast, whether it's a single screw or thousands.

Custom Cutting Services

Threaded rod, studs, bolts, and more, cut and chamfered to spec.

Flexible Purchasing

Request a quote or apply for Net 30 terms, whether you're buying for business or personal use.

Package & Delivery

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

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FAQ

Q: When would you use a self-tapping screw?

A: Self tapping screws are mostly used when the medium into which it will be screws is something like metal. Although, self tapping screws are also used to drill wooden and plastic materials. They tend to have a sharp point, and the threads are also sharp to act like knives cutting into any kind of medium.

Q: What is the difference between a self-drilling screw and a screw?

A: Traditional screws require a pilot hole to be drilled first before the screw is inserted. This means using two tools, a drill for the pilot hole and a screwdriver for fastening. On the other hand, self-drilling screws come with a built-in drill bit tip.

Q: Do self-tapping screws hold well?

A: These screws can typically hold around 80 to 100 pounds of weight, but the holding power depends on the length of the screw and the insertion angle. Self-tapping metal screws can become stronger with certain alloy compositions, depending on the amount of chromium or nickel.

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 self-drilling screws manufacturers and suppliers in China. If you're going to wholesale high quality self-drilling screws made in China, welcome to get pricelist and free sample from our factory. Also, OEM service is available.

self drilling screws, Flat Head Flat Tail

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