Midwest Fasteners Blue Ruspert Steel Flat Head Tapping Screw

Midwest Fasteners Blue Ruspert Steel Flat Head Tapping Screw

The Midwest Fasteners Blue Ruspert Steel Flat Head Tapping Screw is a 5/16 diameter steel tapping screw family finished in Blue Ruspert for enhanced corrosion resistance on exterior and structural applications. This series is available in lengths from 5/16 x 2-3/4 through 5/16 x 4, letting installers match the exact length needed for a connection while keeping the same 5/16 diameter, flat head profile, and T-40 Star drive across every option. Each screw is manufactured from steel and finished with Blue Ruspert coating, which offers improved corrosion resistance over standard zinc plating, and features a flat head profile with a T-40 Star drive for strong bit engagement and reduced cam-out when driving into dense or engineered lumber.

Key Features

• Size Range: Available in 5/16 x 2-3/4, 5/16 x 3-1/4, and 5/16 x 4 to match project specifications calling for that diameter and length combination.
• Material & Finish: Steel construction with a Blue Ruspert coating for improved corrosion resistance over standard zinc plating.
• Head Style: Flat head for a clean, countersunk finish once installed.
• Drive Type: T-40 Star drive for secure bit engagement and reduced stripping during driving.
• Product Type: Tapping screw designed for self-tapping installation into wood and similar substrates.

Technical Specifications

• Product Type: Tapping Screw
• Product Finish: Blue Ruspert
• Connection Type: T-40 Star Bit
• Product Material: Steel
• Size Range: 5/16 x 2-3/4, 5/16 x 3-1/4, 5/16 x 4
• Drive Type: T-40 Star
• Head Style: Flat

Typical Applications

• Deck and outdoor framing connections where corrosion resistance matters.
• Heavy timber and ledger board fastening.
• Structural wood-to-wood connections requiring a flat, countersunk finish.
• General construction and remodeling projects using dense lumber.

Why Midwest Fasteners?

Midwest Fasteners builds this flat head tapping screw family from steel with a Blue Ruspert finish and a precision T-40 Star drive so contractors and fabricators get consistent sizing, reliable bit engagement, and dependable corrosion resistance regardless of which length in the 5/16 x 2-3/4 to 5/16 x 4 range is selected. The flat head design and precise diameter-and-length sizing make this series a dependable choice for professional installations that demand repeatable, consistent results across every job.