#12 x 3-1/2″ Half Thread Gray Ruspert Gutter Screws | High-Low Thread | #17 Point | 1,000 Per Box

Heavy duty gutter screw engineered for maximum reach, superior holding power, and long-lasting corrosion protection in the most demanding installations.

The #12 x 3-1/2″ Half Thread Gray Ruspert Coated Gutter Screw is our longest Ruspert screw — designed for applications requiring deeper fascia penetration where standard length screws simply won’t reach. The half thread design concentrates clamping force at the point of contact for a stronger, more secure connection through thicker substrate materials. The high-low thread and #17 self-piercing point provide aggressive penetration without pre-drilling.

The 1/4″ hex head is 28% taller than standard gutter screws — providing improved bit engagement, reducing bit slipping, and extending tool life over a long day on the job. The #12 washer under the head is larger than the standard #8 washer found on competing screws — distributing load more effectively for a stronger, more secure finished installation.

What is Ruspert Coating? Ruspert is an advanced three-layer metal surface treatment engineered for high performance corrosion resistance:

• Layer 1: Metallic zinc base coating
• Layer 2: Chemical conversion film
• Layer 3: Baked ceramic surface coating

The result is a screw that outlasts standard zinc plated and galvanized options in harsh outdoor environments — salt air, moisture, and extreme weather included.

Available in 1,000 count boxes — truck stock friendly for contractors stocking up for the season.

Also available in Ruspert:

• #12 x 1-1/2″ Ruspert Screws
• #12 x 2″ Ruspert Screws

Key Features:

• Three-layer Ruspert corrosion protection — zinc, conversion film, baked ceramic
• Half thread for maximum clamping force through thick materials
• High-low thread for superior holding power
• #17 self-piercing point — no pre-drilling required
• 1/4″ hex head — 28% taller than standard
• #12 washer — larger than standard #8
• 3-1/2″ length for deep fascia penetration
• 1,000 per box — truck stock friendly

Specifications:

• Size: #12 x 3-1/2″
• Coating: Gray Ruspert — 3 layer
• Thread: Half thread, high-low
• Point: #17 self-piercing
• Head: 1/4″ hex — 28% taller than standard
• Washer: #12
• Quantity: 1,000 per box