Authorized NSI Industries Distributor
NSI Industries QTEKD1 - Self Drilling and Tapping Screw, Steel material, #8 Size, 1/2 in. length, 1/4 in. head width, Hex head, Zinc Chromate finish, 100 per pack, Swaged point type, #2 driver size. For use with MT208B Chuck.
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NSI Industries

QTEKD1

Alternate Item Number: 39120

UPC: 639720391206

Documents & Media
Specification Sheet

Contact for Pricing

Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Overview

NSI Industries QTEKD1 #8 x 1/2" Hex Head Self-Drilling Screws are precision-engineered fasteners designed for rapid metal-to-metal or metal-to-wood assembly without pre-drilling. These screws combine a swaged drill point with a #2 driver size hex head, enabling direct installation into 22-18 gauge steel or compatible substrates. The zinc chromate finish provides corrosion resistance for indoor and outdoor applications, including HVAC, electrical enclosures, and general construction. Each pack contains 100 screws with a 1/4" head width and 1/2" length, optimized for use with MT208B chucks and standard hex drivers. The swaged point type eliminates the need for separate drill bits, reducing installation time by up to 40% compared to traditional tapping screws. Compatible with #2 Robertson or hex sockets, these screws deliver consistent clamping force with minimal torque loss. Ideal for applications requiring flush-mounted fasteners with high pull-out resistance, such as ductwork, paneling, and machinery frames. The UNSPSC code 31162103 classifies these as self-drilling tapping screws, ensuring compliance with industrial procurement standards.
  • Swaged drill point eliminates pre-drilling in 22-18 gauge steel
  • Hex head (#2 driver) for secure wrench or socket engagement
  • Zinc chromate finish resists corrosion in indoor/outdoor use
  • 1/2" length x 1/4" head width for flush-mounted applications
  • 100 screws per pack, optimized for MT208B chuck compatibility

Specifications

Application
Electrical, Plumbing, Heating and Air Conditioning Industries
Finish
Zink Chromate
Head Type
Hex
Head Width
1/4 IN
Length
1/2 in
Material
Steel
Size
#8
Special Features
Features: Four Drives in One Head
Type
Self Drilling and Tapping Screw
Package Dimensions (L x W x H)
3 IN x 3 IN x 2.15 IN
Package Dimensions (L x W x H)
7.62 cm x 7.62 cm x 5.461 cm
Package Weight (Imperial)
0.380 L
Package Weight (Metric)
0.172 kg
#8 x 1/2 Indented Hex (1/4) Hd Slot Tapping Screw Zinc u/m 5,000

DS1525M

#8 x 1/2 Indented Hex (1/4) Hd Slot Tapping Screw Zinc u/m 5,000
This is a plastic anchor assortment designed for use in sheetrock, plaster, brickwork, concrete, or tile. The anchors are plastic with a yellow dyed finish and are intended as a light-duty alternative to steel hollow wall anchors. The assortment includes #4–6–8 anchors with a 0.750 in length and a 3/16 in drill size.

39717

This is a plastic anchor assortment designed for use in sheetrock, plaster, brickwork, concrete, or tile. The anchors are plastic with a yellow dyed finish and are intended as a light-duty alternative to steel hollow wall anchors. The assortment includes #4–6–8 anchors with a 0.750 in length and a 3/16 in drill size.
3 Pieces Knock-Out Seal, 3/4 in. size, 10 per pack

75KOS

3 Pieces Knock-Out Seal, 3/4 in. size, 10 per pack
3 Pieces Knock-Out Seal, 1/2 in. size, 10 per pack

50KOS

3 Pieces Knock-Out Seal, 1/2 in. size, 10 per pack
3 Pieces Knock-Out Seal, 1-1/4 in. size, 10 per pack

125KOS

3 Pieces Knock-Out Seal, 1-1/4 in. size, 10 per pack
3 Pieces Knock-Out Seal, 1-1/2 in. size, 10 per pack

150KOS

3 Pieces Knock-Out Seal, 1-1/2 in. size, 10 per pack
3 Pieces Knock-Out Seal, 2-1/2 in. size, 10 per pack

250KOS

3 Pieces Knock-Out Seal, 2-1/2 in. size, 10 per pack
3 Pieces Knock-Out Seal, 3-1/2 in. size, 5 per pack

350KOS

3 Pieces Knock-Out Seal, 3-1/2 in. size, 5 per pack

Frequently Asked Questions

What product series does this specification sheet cover?

This specification sheet applies to all Hex Head QuaDrive Self Drilling & Tapping Screws – Steel Zinc in the QTEKD series.

Frequently Asked Questions about NSI Industries

How are Tork products typically installed?

Tork products are typically installed by trained technicians who follow a comprehensive commissioning process. This includes verifying the work environment, conducting electrical installation checks, performing internal and external equipment inspections, powering on the system, and executing operational tests to ensure compatibility and reliability.

What environmental ratings do Tork products have?

Tork products are designed to meet various environmental ratings, including NEMA Type 4X and Type 6, which provide protection against corrosion, windblown dust, rain, and occasional temporary submersion. These ratings ensure that Tork products can withstand harsh industrial environments while maintaining operational integrity.

What communication protocols do Tork products support?

Tork products support a comprehensive range of communication protocols, including PROFIBUS DP V1, PROFINET with dual port, EtherNet/IP with dual port, CANopen, and Modbus RTU integrated as standard. These protocols facilitate flexible network integration and high-performance communication across various industrial automation systems.

What are the key features of Tork products?

Tork products are designed with advanced features that enhance efficiency and reliability in industrial applications. Key features include integrated harmonics and EMC design for improved power quality, removable terminals for quick installation, and USB ports for easy troubleshooting. Additionally, Tork solutions emphasize user-friendly setup with application wizards and memory modules for convenient parameter management.

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Tork offers a diverse range of products primarily focused on industrial automation, including TORK® Photocontrols, lighting controls, and various electrical components such as enclosures, occupancy sensors, and grounding solutions. These products are designed to enhance efficiency and reliability in commercial and industrial applications.

What technical support does Tork offer?

Tork offers a comprehensive range of technical support services, including 24/7 customer support, on-site service management, and a technical hotline network. With three advanced technical support centers and over 8,000 hours of technical training conducted annually, Tork ensures certified expertise across 25+ languages to assist customers effectively. Their commitment to service is reflected in a 98% Service Level Agreement compliance rate, providing reliable support for all operational needs.

What industries and applications are Tork products used for?

Tork products are utilized across a variety of industries, including food processing, healthcare, hospitality, and manufacturing. They are designed for applications such as hand hygiene, surface cleaning, and dispensing solutions, ensuring efficiency and compliance in environments that require high standards of cleanliness and safety.

What certifications and standards do Tork products comply with?

Tork products comply with UL and cUL certifications, ensuring they meet rigorous safety and performance standards. Additionally, many models are designed to meet NEMA enclosure ratings, providing protection against environmental factors.

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Remke products are typically installed through a systematic process that includes site audits to verify proper wiring, followed by remote or on-site commissioning. This commissioning involves installation verification, programming, and communication testing to ensure the system operates reliably and meets design specifications.

What accessories are available for Remke products?

Remke offers a wide range of accessories for their products, including panel mounting kits, fuse holders for voltage inputs, ferrites for communication modules, and current transformers. These accessories enhance the functionality and protection of Remke's industrial automation solutions, ensuring reliable performance in various applications.