Unifix Chippy Woodscrews 4.0 x 50mm in a trade tub of 1,600. The extra 10mm over the 4x40 makes these the better choice for fixing into 50mm section timber, battening onto masonry plugs, and securing thicker trim or mouldings where you need more thread engagement without stepping up to a 5.0mm gauge.

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
• 40° deep single thread for fast driving and strong grip
• ZYP finish for corrosion resistance in dry interior environments
• CE approved
• Tub of 1,600 keeps screws organised on site

Best For

Battening onto plugged masonry, door linings into studwork, thicker mouldings, and general joinery into 50mm section timber. A step up from 4x40 when you need more holding depth without the bulk of a 5.0mm screw.

Specifications

• Size: 4.0 x 50mm
• Head: Double countersunk (PZ2)
• Thread: Single coarse, 40°
• Finish: Zinc & Yellow Passivated
• Material: Steel, CE approved
• Tub quantity: 1,600
• Product code: UCCHIPPYT/090