T-STAR plus Flat Head Yellow Zinc, Partial Thread - Multi-Purpose Structural Screws

A multi-purpose structural screw with functional qualities that let you drive faster, install easier, and reduce splitting wood. The T-STAR plus Flat Head has a patented MULTIhead that countersinks the screw head flush in wood. The exclusive T-STAR plus Drive offers superior bit engagement to prevent stripping and damaging your screw. Choose a structural screw that performs better than the rest, buy T-STAR plus Flat Head Yellow Zinc, Partial Thread screws in bulk from wholesalers, dealers, and specialty distributers or in project-appropriate package sizes at retail hardware and home improvement stores.


SPAX T-Star plus flat head fasteners with yellow zinc coating are designed for use in multiple material connections often found inside residential buildings. These "work horse" construction fasteners are designed to countersink in wood for a clean-flush finish and provides a quick and easy installation. In addition, they provide long-lasting, "contractor proven" secure connections.

Material and coating

Cold-rolled "carbon steel" wire, heat treated to grade 5 durability and plated with a yellow zinc finish to prevent red rust. "Yellow zinc" is tested and recognized for use in above ground contact pressure treated lumber for interior dry/damp general construction applications (e.g. AWPA UC1-UC2)

Base Part No.: 419102()

SPAX® T-STAR Plus Drive Fastener

  • Heat treated to Grade-5 durability gives our screws greater strength and reduces breakage
  • Patented thread serration technology reduces driving torque to prolong power tool battery life
  • Unique 4CUT™ Point requires no pre-drilling in wood and prevents wood splitting

Whether you’re working with wood, concrete, masonry, sheet metal, or plastic, use SPAX Multi-Purpose Construction Screws for a wide range of interior applications in multiple materials. Request a sample pack of SPAX Multi-Purpose Construction Screws today and build strong connections on the job site.


• 2-by framing connections

• Furring strips to concrete

• Cabinet frames

• Stair treads

• Subflooring attachments

• Hinge installation

• Indoor furniture

• Installing plumbing supports

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
#8 x 1-1/4"T-20 T-Star PlusPartial240675
#8 x 1-1/2"T-20 T-Star PlusPartial197535
#8 x 2"T-20 T-Star PlusPartial161465
#8 x 2-1/2"T-20 T-Star PlusPartial133375618
#9 x 2-1/2"T-20 T-Star PlusPartial116
#9 x 3-1/4"T-20 T-Star PlusPartial89
#10 x 1-1/2"T-20 T-Star PlusPartial133
#10 x 2"T-20 T-Star PlusPartial107
#10 x 2-1/2"T-20 T-Star PlusPartial87230
#10 x 3"T-20 T-Star PlusPartial1072200322
#10 x 3-1/2"T-20 T-Star PlusPartial57170
#14 x 3-1/2"T-30 T-Star PlusPartial10
#14 x 4"T-30 T-Star PlusPartial81000
#14 x 4-3/4"T-30 T-Star PlusPartial8