SPAX® Flat Head Unidrive Screw, Yellow Zinc, Standard Thread

A patented MULTIhead design countersinks the screw head flush in wood and acts as a brake against metal hardware to prevent pull through. The SPAX® Flat Head Unidrive Screw has a combo drive system – use Phillips or Square drive bit installation. Eliminate pre-drilling in wood. Buy SPAX Flat Head Unidrive Screws with Phillips/Square drive bit combo in bulk from wholesalers, dealers, and specialty distributers or in project-appropriate package sizes at retail hardware and home improvement stores.

Base Part No.: 410102()

SPAX® Multi-Purpose Screws with Patented Thread Technology

SPAX Multi-purpose construction fasteners with Patented thread serrations and MULTIhead technology are the versatile multi-material screw for a wide range of interior applications in multiple materials including wood, concrete, masonry, sheet metal and plastic.

  • Heat treated to Grade-5 durability
  • Patented thread serrations reduce driving torque to prolong power tool battery life
  • Unique 4CUT™ Point prevents splitting and requires no pre-drilling in wood

Ensure professional results in less time. Whether you are working with wood, concrete, masonry, sheet metal, or plastic, choose premium quality SPAX Multi-Purpose Construction Screws on your project. Request a sample pack of SPAX Multi-Purpose Construction Screws today and build strong connections on the job site.

For CAD documents, please see Technical Documents.

SizeDrive/Bit SizeThreadAvailable Pkg. Options
Retail PaxLarge Retail Pax1 lb. Box3 lb. Box5 lb. BoxIndividualProject PaxContractor PaxBulk Pail
#6 x 1/2"#2 Phillips/#1 Sq.Standard50
#6 x 5/8"#2 Phillips/#1 Sq.Standard50
#6 x 1"#2 Phillips/#1 Sq.Standard40
#6 x 1-1/4"#2 Phillips/#1 Sq.Standard35
#8 x 3/4"#2 Phillips/#2 Sq.Standard35
#8 x 1"#2 Phillips/#2 Sq.Standard30
#8 x 1-1/4"#2 Phillips/#2 Sq.Standard30
#8 x 1-1/2"#2 Phillips/#2 Sq.Standard25197
#8 x 2"#2 Phillips/#2 Sq.Standard20161
#8 x 2-1/2"#2 Phillips/#2 Sq.Standard20133
#10 x 2"#2 Phillips/#2 Sq.Standard12105
#10 x 2-1/2"#2 Phillips/#2 Sq.Standard1088
#10 x 3"#2 Phillips/#2 Sq.Standard1672200