Pro-Twist · Self-Drilling Screws (Heavy Gauge)

High Hex Washer Head Screw

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Pro-Twist® High Hex Washer Head Screws are designed for metal to metal fastening with heavy gauge metal up to 3/8 in. thick with extra strength from high hex head. Commonly used in HVAC ductwork assembly and sheet metal construction. Zinc plated for enhanced corrosion resistance. 5/16 in. hex drive allows for a strong connection between tooltip and fastener for high torque during driving. #3 drill point pierces through metal substrates and fine threads provide a secure connection in metal to metal applications.

Application
Metal to Metal Screws
Head Type
High Hex Washer Head with Serrations
Thread Type
Fine Thread
Point Type
#3 Drill Point

Description, photography and documents as published by Pro-Twist. Their product page ↗

Part numbers

1 of 1. Every figure is Pro-Twist's published data.

	Part #
	HH1034

The same on every part number here

Application: Metal to Metal Screws
Gauge: #10
Length: 3/4 in.
Head Type: High Hex Washer Head with Serrations
Drive Type: 5/16 in. Hex Drive
Point Type: #3 Drill Point
Thread Type: Fine Thread
Self-Drilling: Yes
Finish or Coating: Zinc Plated
Base Material: High Carbon Steel
Hand Drive: Yes
Collated: No
Piece Count: 6500
Packaging: Carton

Details

Zinc plated high hex washer head screws for heavy gauge metal to metal fastening

Made from high carbon steel for strength and durability

For penetrating multiple layers of light gauge steel

5/16″ Hex Head for a secure hold during driving

Serrations under the drive head prevent spin out

Fine threads grip metal substrate and provide strong compressive hold

Zinc plated for increased corrosion resistance

#3 Self-drilling point cuts into metal panels easily without pre-drilling

Documents

3 documents, served straight from Pro-Twist so you always get the current revision.

Pro-Twist publishes these by line rather than by part number — one catalogue and one warranty cover the whole range. Anything above marked as an evaluation report is the listing this product is actually approved under.

Ask About This Product

Answered from Pro-Twist's own documents — the 3 sheets listed above — with the source and page behind every line.

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