#7 Underlayment
Timber Underlayment-to-Timber

Features:

• #2 Square drive - BIT2S
• High-Low threads
• Nibs under the head for easier countersinking
• Sharp point
• Trim head
• Class 3 (as per AS3566.2) mechanically galvanised coating

#8 Underlayment
Fiber Cement Board-to-Timber

Features:

• #2 Undersized Square Drive - BIT2SU
• Coarse Threads
• Nibs under the head for easier countersinking
• Type 17 Point
• Straight collation
• Corrosion Resistant