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T-STAR PLUS FLAT HEAD YELLOW ZINC
SPAX® T-STARplus® Flat Head fasteners with yellow zinc coating are designed for use in multiple material connections often found inside residential domains. These construction fasteners are designed to countersink in lumber for a clean-flush finish and provides a quick and easy installation. In addition, they provide long-lasting, "contractor proven" secure connections.
Available in: #10, #8, and #9 diameters
Purchase Options:
Material & Coating
Cold-rolled carbon steel wire, heat treated for strength and 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).
Features
The T-STARplus® Flat Head screw features ribs on the underside of the head that facilitate a clean, flush, or countersunk finish in wood and acts as a brake against metal hardware to prevent stripping out.
- IRC / IBC Code Compliant DrJ TER No. 2010-02 Construction Screw Properties
- Heat treated for strength and durability
- Serrated threads reduce driving torque to prolong power tool battery life
- Unique 4CUT™ Point prevents splitting and requires no pre-drilling in wood
- Superior bit fit to eliminate camming out
Whether you’re working with wood, concrete, masonry, sheet metal, or plastic, use SPAX Multi-Material Construction Screws on multiple materials.
SPAX ENGINEERED FASTENERS ARE THE MOST ADVANCED FASTENER PRODUCT ON THE MARKET
Typical Applications
- 2-by framing connections
- Cabinet frames
- Subfloor attachments
- Stair treads
- Indoor furniture
- Hinge installation
Downloads
Product Brochures
Application Guides
Reference Lateral Shear Values
Product Submittals
CAD & Dimensional Drawings
Download All#8 Flat Head T-STAR Plus and UNIDRIVE
#10 Flat Head T-STAR Plus and UNIDRIVE
Design Values & Loads
Southern Pine(SG=.55)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 175 | 190 | 190 |
| Head Pull-Through WH (lbs.) | 157 | 303 | 315 |
Douglas Fir(SG=.50)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 133 | 146 | 176 |
| Head Pull-Through WH (lbs.) | 157 | 211 | 238 |
Hem Fir & Spruce-Pine-Fir(SG=.42)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 127 | 132 | 144 |
| Head Pull-Through WH (lbs.) | 123 | 177 | 177 |
Southern Pine(SG=.55)
| Diameter | #14 (Dry) | #14 (Wet) |
|---|---|---|
| Withdrawal W (lbs./inch) | 205 | 140 |
| Head Pull-Through WH (lbs.) | 240 | 155 |
Laminated Veneer Lumber(SG=.50)
| Diameter | #14 (Dry) | #14 (Wet) |
|---|---|---|
| Withdrawal W (lbs./inch) | 180 | - |
| Head Pull-Through WH (lbs.) | 350 | - |
Hem Fir & Spruce-Pine-Fir(SG=.42)
| Diameter | #14 (Dry) | #14 (Wet) |
|---|---|---|
| Withdrawal W (lbs./inch) | 130 | 95 |
| Head Pull-Through WH (lbs.) | 190 | 135 |
Plywood 15/32"(SG=.39)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 51 | 51 | 90 |
| Head Pull-Through WH (lbs.) | 120 | 125 | 151 |
Plywood 19/32"(SG=.39)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 83 | 92 | 92 |
| Head Pull-Through WH (lbs.) | 120 | 145 | 177 |
Plywood 23/32"(SG=.50)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 162 | 186 | 186 |
| Head Pull-Through WH (lbs.) | 212 | 258 | 293 |
OSB 15/32"(SG=.50)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 36 | 54 | 54 |
| Head Pull-Through WH (lbs.) | 68 | 68 | 78 |
OSB 19/32"(SG=.50)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 48 | 54 | 54 |
| Head Pull-Through WH (lbs.) | 78 | 78 | 78 |
OSB 23/32"(SG=.50)
| Diameter | #8 | #9 | #10 |
|---|---|---|---|
| Withdrawal W (lbs./inch) | 52 | 66 | 66 |
| Head Pull-Through WH (lbs.) | 110 | 110 | 110 |
ALLOWABLE WITHDRAWAL (W) AND HEAD PULL-THROUGH (WH)
- Tabulated withdrawal and head pull-through design values (W) and (WH) are shown at a CD = 1.0. Tabulated withdrawal and head pull-through values shall be adjusted by all applicable adjustment factors per NDS Table 11.3.1.
- Full withdrawal strength is calculated by multiplying the length of thread embedded in the main member by the tabulated reference withdrawal values.
- Head pull-through values for #8 diameter and larger in Southern Pine, Douglas-Fir, Hem-Fir and Spruce-Pine-Fir are minimum 1.5" side member thickness.
- For wood species with an assigned specific gravity between 0.42 and 0.50, use the tabulated values for specific gravity of 0.42. For wood species with an assigned specific gravity between 0.50 and 0.55, use the tabulated values for specific gravity of 0.50. For wood species with an assigned specific gravity greater than or equal to 0.55, use the tabulated values for specific gravity of 0.55.
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