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.
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.
- IRC / IBC Code Compliant DrJ TER No. 2010-02 Construction Screw Properties
- 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.
| Size | Drive/Bit Size | Thread | Available Pkg. Options | |||||||||
| Retail Pax | Large Retail Pax | 1 lb. Box | 3 lb. Box | 5 lb. Box | Individual | Project Pax | Contractor Pax | Mini Pail | Bulk Pail | |||
| #6 x 1/2" | #2 Phillips/#1 Sq. | Standard | 50 | |||||||||
| #6 x 5/8" | #2 Phillips/#1 Sq. | Standard | 50 | |||||||||
| #6 x 1" | #2 Phillips/#1 Sq. | Standard | 40 | |||||||||
| #6 x 1-1/4" | #2 Phillips/#1 Sq. | Standard | 35 | |||||||||
| #8 x 3/4" | #2 Phillips/#2 Sq. | Standard | 35 | |||||||||
| #8 x 1" | #2 Phillips/#2 Sq. | Standard | 30 | |||||||||
| #8 x 1-1/4" | #2 Phillips/#2 Sq. | Standard | 30 | |||||||||
| #8 x 1-1/2" | #2 Phillips/#2 Sq. | Standard | 25 | 197 | ||||||||
| #8 x 2" | #2 Phillips/#2 Sq. | Standard | 20 | 161 | ||||||||
| #8 x 2-1/2" | #2 Phillips/#2 Sq. | Standard | 20 | 133 | ||||||||
| #10 x 2" | #2 Phillips/#2 Sq. | Standard | 12 | 105 | ||||||||
| #10 x 2-1/2" | #2 Phillips/#2 Sq. | Standard | 12 | 81 | ||||||||
| #10 x 3" | #2 Phillips/#2 Sq. | Standard | 16 | 72 | 200 | |||||||
UNIDRIVE - Flat Head - Yellow Zinc - Specification Sheet (2 MB)
DrJ TER No. 2010-02 Construction Screw Properties 1-6-2023 (1 MB)
SPAX Bit Center Options (901 KB)
#6 Flat Head Unidrive 2-D Screw Size Reference Drawing (PDF) (274 KB)
#6 Flat Head Unidrive Full Scale CAD Files (DWG) (188 KB)
#6 Flat Head Unidrive Full Scale CAD Files (DXF) (782 KB)
#6 Flat Head Unidrive Full Scale CAD Files (PDF) (126 KB)
#8 Flat Head Unidrive 2-D Screw Size Reference Drawing (PDF) (272 KB)
#8 Flat Head Unidrive Full Scale CAD Files (DWG) (239 KB)
#8 Flat Head Unidrive Full Scale CAD Files (DXF) (1 MB)
#8 Flat Head Unidrive Full Scale CAD Files (PDF) (116 KB)
#10 Flat Head Unidrive 2-D Screw Size Reference Drawing (PDF) (269 KB)
#10 Flat Head Unidrive Full Scale CAD Files (DWG) (197 KB)
#10 Flat Head Unidrive Full Scale CAD Files (DXF) (888 KB)
#10 Flat Head Unidrive Full Scale CAD Files (PDF) (108 KB)