NSI Industries QCSH30 - Concrete Screw, Steel material, 1/4 in. Size, 2-1/4 in. length, 5/16 in. head width, Hex head, 2000 Hr Mechanical Zinc, Corrosion Resistant finish, CD6 drill stock number, Quadrive drive type, USA Made, 100 per pack
NSI Industries

QCSH30

Alternate Item Number: 39150

UPC: 639720391503

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Specification Sheet

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Minimum Qty: 100

Multiplier: 100

*Contact for lower quantities*

Overview

NSI Industries QCSH30 is a precision-engineered concrete screw designed for secure fastening in structural and non-structural concrete applications. Made in the USA, this steel screw features a 1/4" diameter and 2-1/4" length, providing robust holding power for heavy-duty installations. The 5/16" hex head accommodates standard hex drivers, while the Quadrive drive type ensures efficient torque transfer and reduced cam-out during installation. The mechanical zinc finish offers 2000 hours of corrosion resistance, meeting demanding environmental requirements. With a CD6 drill point, this screw pre-drills and installs in one step, eliminating the need for separate drilling and tapping operations. The corrosion-resistant finish makes it ideal for outdoor, industrial, and marine applications where durability is critical. Each pack contains 100 screws, ensuring bulk availability for large projects. The QCSH30 is optimized for use with concrete, masonry, and block materials, providing a reliable alternative to traditional expansion anchors or lag shields. Its design minimizes material stress while maximizing pull-out strength, making it a cost-effective solution for construction, infrastructure, and manufacturing applications.
  • 1/4" diameter x 2-1/4" length steel screw for concrete fastening
  • Hex head (5/16") with Quadrive drive for efficient installation
  • 2000-hour mechanical zinc finish for corrosion resistance
  • CD6 drill point for one-step installation in concrete
  • USA-made, 100 screws per pack for bulk availability

Specifications

Application
Electrical, Plumbing, Heating and Air Conditioning Industries
Head Type
Hexagon
Head Width
5/16 IN
Length
2-1/4 in
Material
Steel
Size
1/4 IN
Special Features
Features: One Concrete Screw Masonry Drill Packaged With Each Hard Body Pac Square Jar
Type
Tapping Screw
Package Dimensions (L x W x H)
3.5 IN x 3.5 IN x 5.75 IN
Package Dimensions (L x W x H)
8.89 cm x 8.89 cm x 14.605 cm
Package Weight (Imperial)
2.290 L
Package Weight (Metric)
1.039 kg
Concrete Screw, Steel material, 3/16 in. Size, 2-1/4 in. length, 1/4 in. head width, Hex head, 2000 Hr Mechanical Zinc, Corrosion Resistant finish, CD2 drill stock number, Quadrive drive type, USA Made, 100 per pack

QCSH3

Concrete Screw, Steel material, 3/16 in. Size, 2-1/4 in. length, 1/4 in. head width, Hex head, 2000 Hr Mechanical Zinc, Corrosion Resistant finish, CD2 drill stock number, Quadrive drive type, USA Made, 100 per pack
A Tapcon concrete screw with a flat head and Phillips drive. It is made of steel and has a Blue Climaseal coating for extra corrosion protection. The screw size is 1/4 inch by 2-1/4 inch and it uses a patented Advance Threadform.

60736

A Tapcon concrete screw with a flat head and Phillips drive. It is made of steel and has a Blue Climaseal coating for extra corrosion protection. The screw size is 1/4 inch by 2-1/4 inch and it uses a patented Advance Threadform.

Frequently Asked Questions

What are the available sizes for QCSH30 screws?

The QCSH30 screws are available in nominal diameters of 3/16 and 1/4 inches, with lengths ranging from 1-1/4 to 2-3/4 inches.

What is the material of QCSH30 screws?

QCSH30 screws are made of steel and are treated with a mechanical zinc finish for corrosion resistance.

What is the corrosion resistance of QCSH30 screws?

QCSH30 screws feature a corrosion-resistant mechanical zinc coating.

What is the full head height of the screws?

The full head height for the screws is between 0.140 and 0.145 inches for the 3/16 diameter and between 0.247 and 0.254 inches for the 1/4 diameter.

What is the width across flats for QCSH30 screws?

The width across flats for the screws is 0.244 to 0.250 inches for the 3/16 diameter and 0.307 to 0.312 inches for the 1/4 diameter.

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