Firefly Masonry Screws and Washers 4.7 X 37mm - Pack of 100 - FFC-MS4737M

• Designed for: Fixing of Firefly clips to trunking, timber track and general components into concrete and masonry
• Head style: Countersunk
• Drive bit: Phillips 2
• Drill point: Nail point
• Coating: 500hr Evoshield®
• Shank material: Carbon steel
• Material grade: AISI C1022
• Size: 4.7 x 37mm
• Fixture Thickness (mm): 5.0 – 20.0
• Minimum Drill Depth (mm): 35.0
• Minimum Embedment Depth (mm): 25.0
• Pilot Hole (mm): 4.35

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