Unifix Chippy Woodscrews 5.0 x 100/66mm in a trade tub of 700. The longest in the Chippy range, built for heavy structural joinery where you're fixing through thick sections or multiple layers of timber. At 100mm total length with a 66mm partial thread, the plain shank clamps the top piece while the thread bites deep into the receiving timber.

Pozi drive with double countersunk head sits flush and pulls the workpiece tight. Single coarse thread at 40° gives fast driving and a strong grip. ZYP (zinc and yellow passivated) finish provides corrosion protection for interior use. CE approved to European construction product standards.

Features

• Pozi drive with positive engagement, reduced cam-out
• Double countersunk head sits flush with extra pull-down strength
• Partial thread (66mm) with plain shank for proper clamping action
• ZYP finish for corrosion resistance in dry interior environments
• CE approved
• Tub of 700 keeps screws organised on site

Best For

Roof timbers, ridge boards, heavy floor joists, staircase carriages, and structural connections through doubled-up or tripled timber. The 100mm length with partial thread gives deep engagement and strong clamping force for load-bearing joints. Pre-drill in hardwood to prevent splitting.

Specifications

• Size: 5.0 x 100mm (66mm thread)
• Head: Double countersunk (PZ2)
• Thread: Single coarse, 40°, partial
• Finish: Zinc & Yellow Passivated
• Material: Steel, CE approved
• Tub quantity: 700
• Product code: UCCHIPPYT/120