Spring Bolts, Tools & Adhesives

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Letter from the Inventor

"The standard rail bolt is as much of a pain to use now as it was in the beginning.

Please take the short time to become familiar with the Spring Bolt. You'll be amazed with the time it will save, and the many new doors it can open for you and your business.

Thank you,

Roger Rock
Stair Builder of 25 Years
and Inventor, Spring Bolt
Pat. Pending

 

LEARN MORE - FAQ's

Click any Question link for more information.

How does the Spring-Bolt work?
All of our concealed Spring-Bolt hardware works using the patented mechanics of one spring threading inside another spring. First drill a hole in the face of  both pieces of rail you are joining. Then attached a spring to the bottom of both holes. Insert the alignment pin that  comes with the kit into one of the springs. At this time you can either apply glue to both surfaces or assemble dry to check the joint for fit. You assemble the joint by aligning one spring with the other and twist the pieces together until you have 3 to 4 full turns after the two surfaces have come in contact with each other. No plugs or putty are needed since the Spring-Bolt installation process does not penetrate the finished surface of the rail.

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How precise do I have to be when drilling my holes?
Far less precision is needed to install a Spring-Bolt than is required with any other hardware. A hand held drill with one drill bit and one driver and you will install a Rail Spring-Bolt in less than 2 minutes.  View this video to get a better idea of how easy the Spring-Bolt is to use.
View Installation Video

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How well does the Spring-Bolt work in terms of profile alignment?
Once installed in the joint all of our Spring-Bolt products allow for approximately 1/8” of movement in all directions providing for easy and perfect profile alignment.

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I have used the Spring-Bolt Rail Connector and I had issues with the screws snapping off. Are you using a good quality screw?
When we screw into wood and the screw head comes into contact with the wood and we give the screw an extra 1/2 turn or so one of 3 things will happen.

The screw will:

  • Pull itself a little deeper into the wood.
  • Strip out.
  • Snap off at the head.

When we screw into wood using a washer (the spring acts as a washer) with the screw and the screw head comes into contact with the wood and we give the screw that extra twist the screw cannot pull itself deeper into the wood and so it will either strip or snap.

Also take into account that end grain of wood does not compress and that will also make a screw more prone to stripping or snapping.

In some cases I was able to install a screw along side the screw I broke. As soon as I broke a screw I adjusted the clutch on my drill or used a pilot hole for my screw. The springs need to be secured to the bottom of the hole but do not need to be embedded into wood at the base of the hole. I am a stair builder of 30 years and a carpenter for 44 years. I found that I needed to develop the new skill of screwing into end the grain of hardwoods since in all of my years I had little call for doing so.

Please know that our screws are made in America and that we have tests performed on the screws as they are being manufactured to ensure that the screws function as designed.

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How much time does it take to install a Spring-Bolt and what tools do I need?
The Regular Rail Spring-Bolt and the Rail To Post Spring-Bolt will install in less that 2 minutes. The Post To Deck Spring-Bolt will take 4 to 6 minutes to install. All Spring-Bolts require a drill, one drill bit and one driver.

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How cost effective are your Spring-Bolts?
If a man minute is worth $1.00 and you complete a joint 10 to 15 minutes quicker than you are without the Spring-Bolt then we can say that the Spring-Bolt is the most cost effective post and rail hardware on the market. If you are taking jobs away from your competition by informing the customer you are using the best hardware on the market because it is invisible and has passed load testing, IT IS.........PRICELESS.

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Do you have different sizes of Spring-Bolts?
Yes. We have designed Spring-Bolts for use on most of the connections you have to make to install a wood railing system.

  • The Regular Rail Spring-Bolt is designed to join railing fittings to standard size rails.

  • The Super Spring-Bolt is designed to join 2 pieces of straight, straight to bent or bent to bent rail. This size may also work for attaching a corner newel to a deck.

  • The Rail To Post Spring-Bolt is designed to attach rails to the face of block top posts or box newels. This size will also work for making rail fitting joints on large rail profiles.

  • The Rail To End Post Spring-Bolt consists of 2 pair of Rail To Post Springs. One pair of Springs are right hand threaded and the other pair of Springs are left hand threaded. Matching pairs are installed at each end of the rail. When the rail is twisted between two posts, both ends tighten at the same time. This is used to avoid the need to drill and PLUG the face of the newel located on the open end of a section of railing.

  • The Post To Deck Spring-Bolt is designed to attach a wood post to a wood or concrete deck.

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Do you need blocking in the deck system for the Post To Deck Spring-Bolt?
Yes. Solid sub structure in the deck is needed for any post to deck hardware that will meet local code load requirements. I am not aware of any hardware that would pass a certified load test without the availability and use of a solid sub structure.

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Does the Spring-Bolt work on 90 degree rail joints?
Yes. The Spring-Bolt gives you a  huge advantage when making 90 degree rail joints. The Spring-Bolt allows you to make the joint in less than 2 minutes and gives you a perfect joint. NO plugs, NO putty and NO sanding. The customer loves a perfect joint that is often in a highly visible location.

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What kind of glue do I use with the Spring-Bolt?
Instructions are printed on the bag of every kit you use. The Regular Rail Spring-Bolt uses yellow wood glue. The Super Spring-Bolt uses epoxy. That Rail To Post and the Rail To End Post Spring-Bolt kits require no glue. You may use epoxy if you want to use a glue. All Post To Deck Spring-Bolts use epoxy. We recommend 2 part Fasco 110 slow set. One pint will do 4 Post Spring-Bolts.

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What do I need to know about the Spring-Bolt Epoxy?
Our slow set epoxy is required when using our Post To Deck Spring-Bolt Kit. It is very important that the 2 parts of the epoxy are thoroughly mixed before placing epoxy in the spring holes. When you have thoroughly mixed the epoxy either place the epoxy in the hole immediately or spread the epoxy on your mixing board to create a thin layer of epoxy. By spreading the epoxy over your mixing board there will not be a heat build up. Heat build up will render the epoxy un useable in a relatively short period of time.

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What do I do if the hardware is installed and I want to make an adjustment to my cut?
Unscrew one spring from the bottom of the hole, trim the joint and re install the spring in the hole.

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Can I make rail joints in my shop and take them apart for quicker assembly in the field?
Yes. Once the joint has been made (without glue) you can untwist a joint in a few seconds. On the job you can twist the joints together dry to check for fit and then apply to make the joints permanent. This will cut down the time required on the job site.

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Can the Spring-Bolt be used for all joints?
No. The Spring-Bolt will not work to attach a stair rail that is plumb cut to a post.

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How strong is the Spring-Bolt hardware?
e have assembled typical wood railings in a certified test laboratory using our Spring-Bolts as per the instructions provided on each kit. When required loads were applied to our railings the railings passed residential and commercial testing. In addition we joined 2 each. 6” pieces of #6010 red oak rail using Tightbond II glue and a Regular Rail Spring-Bolt. While supported on both ends and ram pressure was applied to the center of the joint the joint held up to 1,368 LBS of force. You can print test results from our www.spring-bolt.com website.

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I used the Post To Deck Spring-Bolt and the springs did not create a strong pulling force. Does that affect the strength of the joint?
No. The springs in the Post To Deck Kit are designed to hold the post in position until the epoxy sets and cures. This requires a relatively small amount of pressure. Three or 4 turns after the post has come in contact with the post will create enough pressure to hold the post in place until the epoxy sets. This also allows for the post to be twisted in place without scratching the finish on the flooring. Once the epoxy has cured you will have the strongest post to deck attachments possible. In addition there are no unsightly wood plugs to install.

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Can I use Spring-Bolts for my outside deck rails?
Yes. Out Rail To Post and Rail To End Post Spring-Bolt Kits are made of stainless steel and come with stainless steel screws. We use a very heavy gauge stainless steel wire for springs. The pull force is very strong and forever constant. This will keep the joints tight when the moisture levels in the materials change with the changing humidity. We have a Post To Deck Spring-Bolt Kit made for exterior use. The post kit comes with coated springs, a 7/8” x 6” aluminum post pin and stainless steel screws. The springs and the aluminum pin are encased in epoxy and so are not in contact with the wood or the air. As is the case indoors the post to deck hardware requires blocking in the deck frame.

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Can the Spring-Bolt be used with composite railings?
Yes. Use the Spring-Bolt hardware as directed on the packaging.

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INSTALL IN Minutes:

  • Handrails
  • Newel Posts
  • Goosenecks
  • Upeasings
  • Volutes
  • Overeasings

These demo videos show how simple Spring-Bolt is!


Rock Lock Fastening Systems, Inc.

6519 Rock Creek Dr.
Lake Worth, FL 33467
561-951-3334 (p)