1.03.23 FAQ’s On Self Drillers For Thick Steel, Extra Long SDS MAX Bits & MC Stacker
FAQ On Self Drillers For Thick Steel
We sell a bunch of self drilling screws each month and we receive a bunch of questions as well. Below are answers to a few of the most common questions.
How much thread is there on the screw?
On a #5 point, the one that will drill up to 1/2″ thick steel, the drill point is about 3/4″ of an inch before you reach full thread engagement.
Do I need to pre drill?
On most standard steel, no, the drill point should handle it.
My steel is thicker than 1/2″, is there an option?
Sorry, no. 1/2″ is the limit. After 1/2″ the screw will bind up and usually snap.
What is the best screw for fastening 2×4’s to steel?
Our 1/40-20 flat head self driller with wings is what we recommend. The screw has a #4 point so it’s drill capacity is steel is limited to 3/8″. The wings clean out the wood and then snap off when you hit steel. We offer them in an exterior coated version and a stainless steel version.
Looking for a super long SDS MAX hammer bit? How about a 66″ long bit! We have them in both 3/4″ and 1″ diameters. We do have more common longer length bits as well like 5/8″ x 36″. You may not need them often but when you do we can help. Check size and stock here.
The new MC Stacker is a simple way to install mc cable and armored fiber cable. Add your choice of attachment to the 1/4-20 thread and drop your cable in. Learn more here.
