TIMCO Twin-Threaded Countersunk Silver Woodscrews - 7 x 1 1/4 (Box of 200)

A traditional twin-thread woodscrew with single lead start for a fast installation. Mainly used in soft timber applications or masonry with a plastic plug. NOTE: Partially threaded. Double countersunk head reduces the likelihood of head shear and assists completion of countersinking. Partially threaded from 1 1/4 and above. Made from C10-18 steel to ensure consistent quality. 60° twin-threads with parallel shank for faster insertion and greater pull-out resistance. Surface hardened up to 750 HV to prevent torque shearing under load and a core hardness of up to 450 HV for improved ductility.
25° sharp point and single lead for a fast start and improved thread acceptance.

TECHNICAL DATA:
Thread Dia. mm: 3.9
Length mm: 33
Thread Length mm: 21.8
Size mm: 3.9 x 33
Pack Quantity Unit: Pieces
Recess Type: Pozi
Head Dia. mm: 7.45
Substrates: Softwood
Gauge: 7
Salt Spray Resistance BS EN 9227 Hrs: 72
Corrosion Rating: 1 - Clean, dry; low humidity environments
Length inch: 1
Driver Bit Size: PZ2
Thread Type: 60° Twin Threads
Point Type: 25° Sharp
Size imp.: 7 x 1