3.9 x 55mm Drywall Dense Board Screws, Phillips Head – Reduced Countersunk High-Low Thread – Black – (Pack of 1000)

Designed for attaching dense board to timber stud work. The super sharp point and high low thread is specially designed for an excellent fixing into timber.

• Phillips No.2 recess for a positive drive
• Reduced countersunk head for improved countersinking into the dense board
• High-Low thread for increased pull-out value into both timber and thin sheet metal
• Coarse thread for extreme hold
• 25° super sharp point for ease of penetration
• Fire Classification – A1