SPAX® Flat Head Unidrive Screw, Zinc, Standard Thread
A patented MULTIhead design featuring ribs on the underside of the head facilitates a clean, flush or countersunk finish in wood and acts as a brake against metal hardware to prevent stripping out and pull-over. The SPAX Flat Head Unidrive Screw is a premium quality, high-performance wood screw with a drive system for use in either a Phillips or square drive bit installation. Designed for wood applications, but versatile and functional for multiple materials, including masonry, drywall, and plastic, the zinc coated, standard thread flat head Unidrive screw delivers professional results. 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 MULTIhead
SPAX Multi-Purpose Construction Screws with patented MULTIhead are a versatile multi-material fastener solution for a wide range of interior applications, 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 gives our screws greater strength and reduces breakage
- Patented thread serration technology offers faster drive, professional installation, and reduces splitting
- Unique 4CUT™ Point requires no pre-drilling.
Keep a smooth surface whether you’re working with wood, concrete, masonry, sheet metal, or plastic, use SPAX Multi-Purpose Construction Screws on your project and achieve greater aesthetic and eliminate time consuming steps. 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 | 150 | ||||||||
| #6 x 5/8" | #2 Phillips/#1 Sq. | Standard | 50 | 150 | 582 | |||||||
| #6 x 3/4" | #2 Phillips/#1 Sq. | Standard | 45 | 100 | 480 | |||||||
| #6 x 1" | #2 Phillips/#1 Sq. | Standard | 40 | 100 | 384 | |||||||
| #6 x 1-1/4" | #2 Phillips/#1 Sq. | Standard | 35 | 100 | 335 | |||||||
| #6 x 1-1/2" | #2 Phillips/#1 Sq. | Standard | 30 | 283 | ||||||||
| #6 x 1-3/4" | #2 Phillips/#1 Sq. | Standard | 25 | |||||||||
| #8 x 5/8" | #2 Phillips/#2 Sq. | Standard | 40 | 405 | ||||||||
| #8 x 3/4" | #2 Phillips/#2 Sq. | Standard | 35 | 100 | 350 | |||||||
| #8 x 1" | #2 Phillips/#2 Sq. | Standard | 30 | 75 | ||||||||
| #8 x 1-1/4" | #2 Phillips/#2 Sq. | Standard | 30 | 75 | 240 | |||||||
| #8 x 1-1/2" | #2 Phillips/#2 Sq. | Standard | 25 | 40 | 197 | |||||||
| #8 x 1-3/4" | #2 Phillips/#2 Sq. | Standard | 20 | |||||||||
| #8 x 2" | #2 Phillips/#2 Sq. | Standard | 20 | 40 | 161 | 1500 | ||||||
| #8 x 2-1/2" | #2 Phillips/#2 Sq. | Standard | 20 | 40 | 133 | 1500 | ||||||
| #10 x 3/4" | #2 Phillips/#2 Sq. | Standard | 25 | |||||||||
| #10 x 1" | #2 Phillips/#2 Sq. | Standard | 20 | 100 | ||||||||
| #10 x 1-1/4" | #2 Phillips/#2 Sq. | Standard | 20 | |||||||||
| #10 x 1-1/2" | #2 Phillips/#2 Sq. | Standard | 15 | 130 | 2500 | |||||||
| #10 x 2" | #2 Phillips/#2 Sq. | Standard | 12 | 105 | 1500 | |||||||
| #10 x 2-1/2" | #2 Phillips/#2 Sq. | Standard | 12 | 88 | 1500 | |||||||
| #10 x 3" | #2 Phillips/#2 Sq. | Standard | 16 | 72 | 1500 | |||||||
| #10 x 3-1/2" | #2 Phillips/#2 Sq. | Standard | 57 | 1500 | ||||||||
UNIDRIVE - Flat Head - 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 (PDF) (126 KB)
#6 Flat Head Unidrive Full Scale CAD Files (DWG) (188 KB)
#6 Flat Head Unidrive Full Scale CAD Files (DXF) (782 KB)
#8 Flat Head Unidrive 2-D Screw Size Reference Drawing (PDF) (272 KB)
#8 Flat Head Unidrive Full Scale CAD Files (PDF) (116 KB)
#8 Flat Head Unidrive Full Scale CAD Files (DWG) (239 KB)
#8 Flat Head Unidrive Full Scale CAD Files (DXF) (1 MB)
#10 Flat Head Unidrive 2-D Screw Size Reference Drawing (PDF) (222 KB)
#10 Flat Head Unidrive Full Scale CAD Files (PDF) (108 KB)
#10 Flat Head Unidrive Full Scale CAD Files (DWG) (197 KB)
#10 Flat Head Unidrive Full Scale CAD Files (DXF) (888 KB)