How do I select the correct drill point?

The drill-point length and drilling capacity should be selected according to the combined thickness and hardness of the metal components. The drill point should penetrate the material before the threads begin to engage.

Torx Cylinder Head Partial Thread Self-Drilling Screw for Metal and Steel

Name: Torx Cylinder Head Partial Thread Self-Drilling Screw for Metal and Steel
Brand: Eastland Building Materials Co., Ltd.
SKU: 2324840305

Jiangsu, ChinaEastland Building Materials Co., Ltd.

US$0.50-1.50

50,000 Pieces

Product specifications

Raw Materials

Surface Treatment

Thread

Product profile

Customization

Available

Material

Carbon Steel

Type

Self-Drilling Screw

Model NO.

orx Cylinder Head Partial Thread Self-Drilling Scr

Groove

Torx

Connection

Screw

Head Style

Cylinder

Standard

DIN, GB, ANSI, BSW, JIS, GOST

Grade

8.8

Application

Construction

Place of Origin

China

Brand Name

Eastland

Design Style

Modern

After-Sale-Service

Onsite Inspection

Warranty

More Than 5 Years

Transport Package

Box

Specification

Customized

Trademark

EASTLAND

Origin

Nanjing, China

Production Capacity

500, 0000 Pieces/Year

Key features

1. Integrated Drill Point. The drill point combines drilling and thread-forming operations, helping reduce installation steps within the specified metal thickness range.

2. Secure Torx Drive. The Torx recess provides stable driver-bit engagement and efficient torque transfer while helping reduce slipping during installation.

3. Accessible Cylinder Head. The cylinder head provides a defined bearing surface and remains accessible after installation for convenient tightening or removal.

4. Partial-Thread Configuration. The partially threaded shank can provide clearance through the upper component and support controlled positioning in suitable metal assemblies.

5. Customizable Drilling Performance. Different diameters, lengths, drill-point sizes, materials and surface finishes can be customized for specific metal thicknesses and applications.

Company profile

Eastland Building Materials Co., Ltd.

Jiangsu, China

Business Type: Manufacturer/Factory, Trading Company, OtherExport Year: 2014-05-22Average Response Time: ≤10.62hTerms of Payment: LC, T/TInternational Commercial Terms(Incoterms): FOB, CFR, CIF

AI-Powered supplier vetting

SummaryEastland Building Materials Co., Ltd. is a China-based supplier in Nanjing, Jiangsu, associated with manufacturing activities and operating as a trading company while also being identified as a manufacturer/factory. Its stated business focuses on AAC/ALC panels, blocks, floor slabs, and related construction products. The supplier reports German-origin automated production equipment and annual capacity exceeding 1.6 million cubic meters, indicating substantial stated production capability. It lists multiple management-system certifications and serves several international regions. Exporting reportedly began in 2014, with quotations available under CFR, FOB, and CIF terms and payment accepted by LC or T/T. However, quality-control staffing, R&D engineer experience, and overall staff experience are unavailable. The available trade record shows one transaction and one associated buyer, while customer-use descriptions cover hotels, schools, villas, apartments, and shopping malls. No direct evidence establishes...

Supplier typeThe supplier is classified as a trading company in its company-nature data, while its business-entity classification also includes Trading Company and Manufacturer/Factory. Its stated activities involve developing and manufacturing AAC products, and associated companies are in manufacturing, indicating a mixed trading-and-manufacturing profile rather than a purely trading operation.

CertificationsThe supplier lists ISO 9000, ISO 9001, ISO 14001, ISO 14000, and ISO 20000 management-system certifications. This is explicit evidence of certification holdings, although the slices do not provide certificate numbers, validity dates, or scope details.

Production capacityThe supplier reports fully automatic German production lines and machines, annual production capacity exceeding 1.6 million cubic meters, and manufacturing of AAC panels and blocks. It also reports lead times within 15 working days in both off-peak and peak seasons, providing explicit evidence of substantial stated production capability, although quality-control staffing data is unavailable.

Client casesThe supplier states that its AAC panels have been used in hotels, schools, villas, apartments, shopping malls, and other buildings. The trade record also identifies one associated buyer and one transaction, but it does not provide independently verifiable project names, quantities, locations, or references.

Product Q&A

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

A self-drilling screw has an integrated drill point that can drill and form threads in one operation. A conventional self-tapping screw normally requires a pre-drilled or punched pilot hole.

Q:Does this screw require pre-drilling?

Pre-drilling is generally not required when the material type and total thickness are within the rated drilling capacity of the screw point.

Q:What materials can this screw be used with?

It is designed for sheet metal, light-gauge steel and related metal assemblies. The appropriate drill point must be selected according to the material hardness and total thickness.

Q:What is the purpose of the partial-thread design?

The unthreaded section can provide clearance through the upper component, while the threaded section engages the lower component. The correct shank and thread lengths must match the assembly thickness.

Q:What tool is required for installation?

A matching Torx driver bit and a speed-controlled installation tool should be used. The recommended torque and rotational speed depend on the screw diameter, drill point and metal thickness.