A: Hello, Thanks for reaching out! Assuming your question is regarding the pullout of the fastener, the 1/4" Diameter PowerLag has a withdrawal (pullout value) of 375#/in. in Southern Pine, 310#/in. in douglas fir, and 245#/in. in SPF. Thanks, SPAX US
A: I just noticed the star bit is a T-30 instead of a T-25.
A: a star bit screwdriver or an electric drill with a star bit T25 or the one designated on the label, or an impact tool with the same bite at shown above.
A: Hello, These can be installed using a drill or impact driver with a T30 drive bit. Thank you for being a SPAX customer. SPAX U.S.
A: You need a Torx bit for a drill/driver.
A: The SPAX ¼” power lag has an allowable withdrawal strength of 245 lbs./inch of thread in a wood member with a specific gravity of 0.42. Height specific gravity’s will yield an increased allowable withdrawal, please refer to our DrJ TER No. 1912.07 POWERLAGS Fastener Properties 4/15/2021. That is available on our website: www.spax.us
A: The Spax ¼” X 3” power lags have an allowable shear strength of 995 and a withdrawal design value in SPF 245 pounds per inch of penetration. Keep in mind any thickness of wall material (such as Drywall) should be taken into consideration. The installation of the fastener can affect its performance. Make sure the fastener goes into the center of the stud and it has adequate threads into the stud’s.
|Name||1/4 in. x 3 in. Torx Powerlag T-Star Drive Washer Head Yellow Zinc Coated Lag Screw||1/4 in. x 3 in. Hex Drive Hex Head Zinc Powerlag Screw||1/4 in. x 3 in. Hex Head Hex Drive High Corrosion Resistant (HCR) Coated PowerLag Screw||5/16 in. x 3-1/8 in. RSS Star Drive Washer Head Alternative Lag Screw|
|Size||1/4 in||1/4 in||1/4 in||5/16 in|
|Screw Length||3 in||3 in||3 in||3-1/8 in|
|Fastener Plating||Yellow Zinc||Zinc||Magni||Coated|
|Head Style||Washer Head||Hex||Hex||Washer Head|
|Features||ACQ Rated,Coated,Self Drilling,Self Tapping,Serrated Edges||Coated,Self Drilling,Self Tapping||ACQ Rated,Coated,Self Drilling,Self Tapping,Serrated Edges||ACQ Rated,Coated,Self Drilling,Self Tapping|
|View Product||View Product||View Product||View Product|