What Is Direct Fastening Anyway? Direct fastening is the process of forcing a stud or nail into concrete and steel. It is direct in that it eliminates any pre-drilling or tightening to expand an anchor. The most common form of direct fastening still has to be forcing a pin into concrete to fasten 2x material or metal studs for drywall.
If you are looking for extra long self drilling screws, often called TEK screws, you know that after about a 2″ length they can be hard to find. Most big box stores will handle some of the smaller sizes but some applications will call for a longer screw. For instance, you may be fastening foam to steel or you are going through a void before you hit the steel you need to attach to. Whatever the case, sometimes you simply need a longer length self driller. We stock #14 self drillers or TEKS in lengths up to 8″. Usually with the longer screws you will only find them in #14 diameter. The drill point is a #3 which has a drill drill capacity .060 – .220. Correct socket size for the # 14 self driller is 3/8″. If you are going to thicker steel, say 3/16″ or more you would need a screw with a #5 point. From time to time we get stock of 10″ screws when we do a mill run. We have a few customers that buy pallets at a time and so when they order, we add a few cases for our stock but when they sell out, we need to wait for the next big order. There are a lot of self driller screws online to choose from. We are proud to offer a top quality self driller you can rely on. We don’t just sell them online, we sell them face to face to our contractors. Rest assured, if they don’t like the quality, we will here about it! We have been supplying these screws for decades. On our site you will find the longer hex self drill screws set up in packages of 100 or 50 depending on the lengths. If you have a need for larger quantities, feel free to email us for case or pallet pricing. Shop our extra long self drillers here.
The Simpson-Strongtie THD50234RH rod hanger for 1/2″ rod in concrete is an excellent atlernative for suspening 1/2″ threaded rod in overhead. If you are dropping 1/2″ rod from concrete overhead for cable tray, fixtures or HVAC applications, this is an anchor you may want to check out. You may be used to using 1/2″ drop in anchors, drilling a 5/8″ hole and then trying to hammer with the set tool overhead to set the anchor. I have done it, not fun! Watch the video on the Simpson THD50234RH rod hanger, it is super easy to install. Just drill a 3/8″ hole to a minimum depth of 3″, blow the hole and drive in the hanger using an impact driver and a 11/16″ socket. While the initial cost may be higher than a drop in anchor, you will easily make it up in time, especially when you drop the set tool and have to climb down the ladder and grab it, again. It is safe to say, you tech’s cost you $1 a minute, likely more. It won’t take much to recoop cost.
One of the originators of the overhead rod hanger fasteners was Sammy Screws. While they offer a concrete rod hanger for 1/4″ and 3/8″ threaded rod, they do not have choice for the 1/2″ rod. The THD50234RH is desigend arount the tried and true Titen HD series of anchors. Unlinke the Sammy Screws, you do not need a special driver, just an 11/16″ socket and your impact driver. This is one of those anchors you may hesitate to try, again, the initial cost is higher, but once you try them, you will keep using them. They really are much more user friendly!
Perma-Grip Concrete Anchors For Fastening Lumber To Masonry Material. For fastening 2x or other material to concrete, block or brick, you may think of Tapcon screws. Another super easy secure alternative fastener for mounting 2x material or other lumber for that matter is the Perma-Grip Concrete anchor. We have been selling them here in MN for decades, lot’s of them. They are simple to install. Just drill a 3/16″ hole about 1″ to an 1-1/2″ hole past your desired embement and hammer in. To determine the correct anchor lenght, add 3/4″ to an 1″ to your material thickness. So for a 2 x 4, (1-1/2″) add an inch and you come up with the 2-1/2″ Perma-Grip. For 3/4″ plywood, you would use a 1-1/2″ etc. We show lengths of 3″ on our site but they are avaialble much longer so if you are fastening something thicker like foam, we can likely supply the correct lenght. It is important to use the correct length for desired pullout and ease of installation.
The most common application we see is any situation where 2x lumber is fastened to concrete. For large commercial jobs, the 2-1/2″ size is used fasten 2 x 6 material to the the top of concrete panels. Perm Grip anchors are also an ideal choice for garge door bucks and window openings. For multi family structures and basements, you won’t find an easier install than these handly little anchors. The anchor is covered with an exterior coating making it ok to use with treated lumber and exterior use.
If you are frustrated with Tapcon snapping or stripping (that’s a blog for another day) Give the Perma Grip anchor a try for fast secure installation.
For years the go to fasteners for poured concrete were wedge anchors. They offer fast relatively fool proof installations. Wedge anchors are a pretty straight forward install, drill the hole, blow it out, pound in the anchor and tighten. Your diameter that you drill is the same diameter as the wedge anchor. For instance, for a ½” wedge anchor you will use a ½” bit. Drill your hole at least ½” deeper than your intended embedment. You can drill all the way through the slab if you want in which case if you want to remove the anchor you could remove the nut and pound through. While diameter as small as ¼” are available, many times a Tapcon concrete screw would make a better choice when you get that small. Wedge anchors are available in diameters up to 1-1/4” and in standard zinc, mechanically galvanized and stainless steel.
Basics to remember when considering wedge anchors. Designed for poured concrete, not hollow applications. Drill bit matches diameter of anchor. Drill ½” beyond desired embedment. Follow manufacture’s recommended install, usually drill, clean pound in and tighten to recommended torque. Also follow minimum embedment guidelines. We stock a complete line of wedge anchors in diamters of 1/4″ to 1-1/4″ . If you don’t see the size you are looking for give us a call we likely have it. Standard finish is zinc but mechanically galvanized and stainless steel wedge anchors are available.
Choosing the correct fastener when fastening to concrete can be much more than preference. It can be a safety issue. While some plans or specs may call out a specific fastener, many situations are left up to the contractor to decide what is best. In most situations, I actually like it when the contractor has some input on what type of fastener to use as I feel when you mix data, experience and the real world, you will always come up with the best fastener. Certainly when an engineer calls out a certain anchor or fastener, you want to heed the direction. Many times you will see the note “or proved equal” so you may have a little leeway to choose a different manufacturer than noted. There are so many applications, conditions, opinions and methods when it comes to fastening to concrete that it can be difficult to know where to start and where to stop for that matter. Add to that it really depends on the nature of what you are fastening. So, we will break it down a little bit by anchor type.
Part 1 : Wedge Anchors.For years the go to fasteners for poured concrete were wedge anchors. They offer fast relatively fool proof installations. Wedge anchors are a pretty straight forward install, drill the hole, blow it out, pound in the anchor and tighten. Your diameter that you drill is the same ……..CONTINUE READING
Part 2 : Perma Grip Concrete Anchors
Perma-Grip Concrete Anchors For Fastening Lumber To Masonry Material. For fastening 2x or other material to concrete, block or brick, you may think of Tapcon screws. Another super easy secure alternative fastener for mounting 2x material or other lumber for that matter is the Perma-Grip Concrete anchor. We have been selling them here in MN for decades,…..CONTINUE READING
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