Stewart Fastener J1248BHTZ Hex Washer Head Tek Screw

Product Description

The STEWART FASTENER J1248BHTZ is a self-drilling tek screw with a hex washer head, designed for fastening metal-to-metal and light structural connections in HVAC, sheet metal, and general trade applications. Built from steel with a zinc coating for corrosion resistance, this screw measures 12-14 thread size at 3 inches in length. The hex washer head allows for quick installation with a standard hex driver or nut driver bit, making it a practical choice for field technicians working with ductwork, equipment housings, and metal framing.

This tek screw is commonly used in commercial and residential HVAC duct fabrication, sheet metal assembly, electrical enclosure mounting, and light structural steel applications. The self-drilling tip eliminates the need for a pilot hole in most light-gauge metal work, reducing installation time on the job site. It suits any trade professional who regularly fastens sheet metal components in the field or in a shop environment.

Key Features

• Self-drilling tip drills its own pilot hole in light-gauge metal without pre-drilling
• Hex washer head provides a large bearing surface and positive driver engagement
• Steel construction with zinc coating for corrosion resistance
• 12-14 thread size at 3 inches length suits a range of sheet metal thicknesses
• Compatible with standard hex driver bits and nut driver attachments

Compatibility

Designed as a standard self-drilling tek screw for light-gauge metal-to-metal fastening applications in HVAC, sheet metal, and general trade use.

Installation Notes

Installation is typically performed by HVAC technicians, sheet metal workers, or electricians using a power drill or screw gun fitted with a hex driver bit. Ensure the workpiece is properly secured before driving. Do not overdrive the screw, as this can strip the threads or distort thin sheet metal. Follow applicable local codes and manufacturer guidelines for fastener spacing on structural assemblies.

Technical Specifications

• Thread Size: 12-14
• Length: 3 inches
• Head Type: Hex Washer Head
• Drive Type: Hex
• Screw Type: Self-Drilling Tek Screw
• Material: Steel
• Finish: Zinc
• UPC: 662352405553

Standard Information

• Brand: STEWART FASTENER
• Manufacturer Part Number: J1248BHTZ