Press Release

SPAX® Receives DrJ Engineering Technical Evaluation Report 2010-02 for Construction Screw Properties

December 16, 2021 SPAX® Construction Screws were tested and evaluated to determine their structural resistance properties which are used to develop reference design values for allowable stress design. The following properties were evaluated: Bending yield, tensile strength, shear strength head pull-through, withdrawal strength, lateral resistance and corrosion resistance.

SPAX® construction screw types covered in this TER include:

Carbon Steel Fastener Types
#6, #8, #10, #14 Unidrive Flat Head - zinc and yellow zinc coating
#8, #9, #10, #14 T-STAR plus Flat Head - zinc and yellow zinc coating
#8 Cross Recess Wafer Head - zinc coating
#8, #10 T-STAR plus Wafer Head - yellow zinc coating
#6, #8, #10 Unidrive Pan Head - zinc coating
#6, #8 T-STAR plus MDF & Hardwood Trim head - zinc coating

Stainless Steel Fastener Types
#9, #10 T-STAR plus Flat Head - stainless steel
#8, #10 T-STAR plus POWERDECK Trim Head - stainless steel

PDF Icon DrJ TER No. 2010-02 Construction Screw Properties 12-16-2021 (1 MB)