250 Piece #8-14 Hex Washer Tek Screw Assortment Starter Kit

• Self-drilling hex washer head tek screws in #8, #10, #12, and #14 — multiple lengths per size
• QR-coded labeled storage plastic drawer — organized by size and ready to stock on your bench or service cart
• 250 pieces total, approximately 3 lbs

Type	Self-drilling hex washer head (Tek screw)
Sizes	#8, #10, #12, #14
Material	Carbon steel
Finish	Zinc plated
Drive	Hex washer head — 5/16" hex
Point	Self-drilling — no pilot hole required
Total pieces	250
Approx. weight	3 lbs
SKU	ASSTHWTSD12

• HVAC contractors — sheet metal duct assembly, duct flanges, and register boxes where self-drilling screws eliminate the pre-drill step
• Metal building construction — wall panels, roof sheeting, trim, and light structural connections on steel-framed buildings
• Electrical and enclosure fabrication — panel boxes, wireway covers, cable tray, and junction box assembly
• Roofing and siding crews — metal roofing panels and steel siding that require a fast-driving, self-seating fastener
• General sheet metal work — fabrication shops and service techs who need a reliable, organized supply of tek screws across the common size range

For higher-volume use, see the 500-Piece Hex Washer Tek Screw Assortment — the same sizes, doubled, at better value per screw.

A tek screw (also called a self-drilling screw) combines a drill point and a thread-forming body in one fastener. The drill point bores through the material, the shank taps the thread, and the head seats — all in a single driving operation, without a pre-drilled pilot hole. In sheet metal and light steel applications, this eliminates a step and significantly speeds up installation.

The hex washer head configuration is the standard choice for professional applications. The washer face spreads the clamping load to reduce pull-through on thinner material, and the hex drive is compatible with standard nut drivers, socket sets, and hex-tip impact drivers — no cam-out, no stripped heads.

The #8 through #14 range is calibrated for the most common commercial and industrial sheet metal thicknesses. Larger point numbers indicate a larger screw body and a heavier-duty self-drilling tip — #14 is the right choice for thicker gauge steel and heavier panels where a #8 or #10 would bind.

• Ships within 1–2 business days from our warehouse
• Volume pricing available — save up to 20% when ordering 3 or more kits
• B2B accounts: HVAC contractors, metal building crews, and fabrication shops can apply for a business account with custom pricing and a dedicated rep — contact us to get started