This 4.2mm diameter, 16mm length black self-tapping screw combines increased diameter strength with versatile medium-length penetration. Perfect for general construction and maintenance work, this size is particularly well-suited for HVAC installations, electrical enclosures, and securing metal framework where robust fastening is required through materials of moderate thickness. The flanged Pozi head incorporates an integrated washer effect that spreads fastening pressure across a wider area, protecting work surfaces from damage whilst ensuring secure retention. Self-tapping technology allows the screw to create its own thread as you drive it, saving time by eliminating pre-drilling steps. Manufactured to BS 4174 specifications and supplied in a pack of 100 within a resealable bag. Features and Benefits: • 4.2mm diameter x 16mm length ideal for medium-duty applications • Flanged Pozi head provides integrated washer effect for load distribution • Self-tapping design cuts own thread for efficient installation • Black finish offers corrosion resistance and professional appearance • Manufactured to BS 4174 British Standard • Pack of 100 in resealable bag Specifications: Brand: Sealey Nett Weight: 0.17kg Pack Qty: 100 Size: 4.2 x 16mm

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