M4 / M5 Zinc-Coated Self-Tapping Wood Screws - Full Thread, Countersunk Phillips Head, 16-80mm, 100 / 200 Pack

M4 and M5 zinc-coated self-tapping wood screws. Carbon steel with zinc coating for corrosion resistance. Full thread, countersunk flat head, Phillips cross drive. Self-tapping tip eliminates the need for pre-drilling in most wood and fibreboard applications. M4 variants available in 16mm, 20mm, 25mm, 30mm, and 35mm lengths in 200-piece packs. M5 variants available in 30mm, 40mm, 50mm, 60mm, 70mm, and 80mm lengths in 100-piece packs. 0.68kg.

Key Features

• Self-tapping tip - no pre-drilling required - the self-tapping point cuts its own thread as it is driven into the material, eliminating the pre-drilling step required with standard machine screws; this reduces installation time and the number of tools required, particularly for volume assembly tasks such as flat-pack furniture and cabinetry; suitable for softwood, hardwood, MDF, and fibreboard substrates depending on screw diameter and material density
• Full thread for maximum grip - the thread runs the full length of the screw shank from tip to head, providing maximum thread engagement in thin or short-depth materials; full thread is preferred for fibreboard and MDF applications where partial-thread designs may not achieve sufficient pull-out resistance
• Countersunk flat head - flush finish - the countersunk flat head is designed to sit flush with or below the material surface when driven fully; this provides a clean finish in furniture, joinery, and cabinetry applications where exposed screw heads would be visible or catch on other surfaces; compatible with countersink bits where a recess is required
• Phillips cross drive - the Phillips cross-head recess is compatible with Phillips screwdrivers and Phillips bits in all standard electric and manual drivers; widely available drive format with good torque transfer at typical wood screw installation torques
• Zinc coating for corrosion resistance - the zinc coating provides a barrier against oxidation and surface corrosion, extending the service life of the screw in indoor applications and in environments with moderate humidity exposure; appropriate for interior woodworking and furniture; not rated for fully outdoor or submerged applications

Variant Selection Guide

• M4 (200-pack) - 16mm, 20mm, 25mm, 30mm, 35mm - suited to lighter joinery, thin panel fixing, small furniture components, and cabinetry where a smaller fastener diameter is appropriate for the material thickness
• M5 (100-pack) - 30mm, 40mm, 50mm, 60mm, 70mm, 80mm - suited to heavier joinery, thicker panel and structural furniture fixing, and applications requiring greater pull-out resistance; the larger diameter and longer length range covers structural assembly in shelving, cabinets, and frames

Specifications

Suitable Applications

• Flat-pack and self-assembly furniture
• Cabinet and joinery assembly
• MDF and fibreboard panel fixing
• Shelving and storage unit construction
• Interior woodworking and DIY projects