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Squirter® DTIs with
DuraSquirt® Formula

the best way to bolt™
;
Applied Bolting Technology™ LLC is the only U.S. manufacturer specializing exclusively in heat-treated DTIs (Direction Tension Indicators). Our DTIs meet the stringent requirements of ASTM,

AISC, RCSC, and the United States Fastener Quality Act of 1999. Engineered and tested, they also comply with compression standards set by ASTM, ASME, BS, and EN.

Recognized by all modern structural standards, our DTIs provide a proven, reliable method for always achieving proper bolt tension.

You can trust that materials specified and procured from Applied Bolting Technology™ are of the highest quality, delivered promptly, and fully supported.

Key Features of Squirter® DTIs

Squirter® DTIs provide Visual Verification of Bolt Tension™, ensuring structural integrity in construction projects. They are utilized globally by significant engineering, procurement, and construction (EPC) firms such as Bechtel, Fluor, Worley, Kiewit and Burns & McDonnell.

DuraSquirt® Formula: This is the patented Safety Orange indication media found inside every Squirter® DTI. It is engineered for extreme job site conditions — resisting wind, rain, heat, cold, and even front exhaust guns. Squirter® DTIs with DuraSquirt® Formula eliminate the need for feeler gauges. They enable fast, confident installations and inspections.

Size Range: DTIs are available in imperial sizes from 1/2″ to 1 1/2″ and metric sizes M12 to M36, as specified by ASTM F959, BS 7644, and EN 14399. They are compatible with F3125, A325, A490, 8.8, and 10.9 bolts.

Finishes: We offer various finishes, including galvanized (mechanical and thermally diffused zinc) and specialty coatings upon request. Type 3 steel and plain finish suit different environmental conditions and project requirements.

Unique Attributes:

  • Material Traceability – Applied Bolting Technology™ is the only DTI manufacturer that provides instant online access to all material certifications for every part they produce, ensuring complete traceability.
  • Compliance with Hardening Standards – We are the sole U.S. DTI manufacturer that hardens its DTIs per ASTM F959, BS 7644, EN 14399, AASHTO, AISC, RCSC specifications, and the U.S. Fastener Quality Act of 1999.
  • Extensive Inventory – With an on-site 15,000-cubic-foot warehouse, we maintain stock levels to satisify customer needs. We are currently shipping orders out within 2 business days.
  • Educational Contributions – Our proactive educational efforts regarding structural bolting are frequently referenced by large EPC companies, structural organizations like AISC, and publications such as Modern Steel and ENR.

Specification Recommendation:

To incorporate Squirter® DTIs into structural bolting specifications, consider adding the following statement:

“All High Strength Structural Bolts shall include an F959(M) Squirter® DTI, quenched and tempered in accordance with ASTM F959 section 4.3.2, manufactured by Applied Bolting Technology™, and installed and inspected per their instructions.”

By choosing Applied Bolting Technology™, you ensure the integrity and safety of your structural connections with reliable and efficient bolt tensioning solutions.

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Here’s What People Are Saying
About Applied Bolting Technology™

“Thank you again for your excellent help and generosity in holding the short educational/training/infomercial about structural bolting and your products. I had tried for months if not years to explain your products and all the particulars about bolting and tensioning etc. but it wasn’t until you guys helped with the presentation that we ever got it across.”

– Steve Gladow, Chance Rides

“You and your team were very thorough in your presentation of pre-installation verification (PIV) and more than willing to answer questions from the group. The hands-on demonstration in shop was superb, illustrating the correct procedures used for PIV as well as emphasizing key components during the testing.”

– Aaron D

“I’ve watched the evolution of different technologies in the industry, and certain technological advancements in welding and bolting. For me there’s two that stand out as the biggest impacts on our industry, one of them being Squirter® DTIs.”

– Thomas French, Senior Quality Manager, Kiewit Corporation

“I want to thank you for having Chris Curven stop by our job site in Jacksonville. We spent time together examining how we are bolting our steel together and how we are utilizing our Skidmore test. Chris was able to shed some light on how and why we can use our tester more effectively. He also believes that we are on the right track as far as the way we are getting the job done. He commented that this is one of the few job sites that he has visited that is not experiencing a lot of difficulty. I believe that is because of the conversations that you and I have had concerning the DTIs. I want to take this opportunity to thank you for helping me understand your product better. This in turn makes my job easier.”

– Joseph Fertig, W.W. Gay Mechanical

“We requested Applied Bolting Technology™ DTIs on this project, because we knew we could rely on their field assistance in case we had difficulty with our bolting procedures or the inspection company on the site. We installed 1 1/8″ A490 DTIs using a CP 612. Average time after snug was nine seconds! We are pleased to state the job went smoothly and our bolting hours came in on or below budget.”

– John Bosworth, Williams & Beasley Const. Co.

“All went well on the basis of the Squirter® DTI’s where we had no issues from the torquing criteria that was outlined in the specs given by Applied Bolting Technology™ for the A325 and A490 type bolts. We appreciate the training and took a lot of confidence from your demonstration to what we performed out in the field. I would say this is a great tool to be used.”

– Leon Cogan

“One thing I love about this industry is no matter how long you’re in it you learn something new almost every day and sitting through your presentation was no different. Next time we have a bolting issue in the field it’s going to run smoother because of the knowledge we now have.”

– Chris McCaffrey

“I want to thank you on behalf of myself and my apprentice class for all the years of coming down to my training facility and giving your presentation. There are always those questions that come with field bolting and tensioning methods, but you, with your equipment and lecture knowledge, give our apprentices a backbone that is second to none. Also, the t-shirts and maple syrup top the whole night off. I can’t wait to get you back in for my new class.”

– Mark S. Docie, Apprentice Coordinator and Training Director, Ironworkers Local 68

“Finally getting around to returning the left over t-shirts and wanted to say thanks to you for coming to our Local and giving your presentation. Due to the small size of our Local and our limited resources many times we are unable to participate in training programs. We really appreciate you working with Harvey to come here and Applied Bolting Technology™ for absorbing the costs associated with your trip. I know everyone was extremely impressed with your presentation and that Harvey and I will use the materials and information you presented many times in the future.”

– JCharles Whitesell, Apprenticeship Coordinator, Local Union 584

“I realize that you are in the business of selling Squirter® DTIs, which are a fascinating and novel aspect of the bolting industry, and the fact that you demonstrate all of the bolting methods in your presentation in addition to the direct tension indicator washers was tremendously appreciated. Many times when we as instructors attempt to involve industry specialists in our training, all we get is a sales pitch on the particular end of the industry that they represent. This leads many instructors to devalue the potential input of industry in the classroom. This couldn’t be further from the trust regarding your presentation. Your depth of knowledge, expertise on field bolting problem-shooting and rapport with the students makes the involvement of Applied Bolting Technology™ in the Ironworker Instructor Training Program a tremendous asset.”

– Kevin Bryenton, Vice President/Apprentice and Training Coordinator, Ironworkers Local 721

Pre-Installation Verification: Reduce Errors, Save Time

Applied Bolting Technology™ emphasizes the importance of Pre-Installation Verification to ensure the effectiveness of bolting methods. This verification process identifies potential issues between fasteners, tools, and installers before commencing field bolting operations.

Key Aspects of Pre-Installation Verification:

1. Fastener Capability:

• Assess whether the fastener assemblies can achieve at least 105% of the minimum required bolt pretension.

• Conduct tests by applying torque until the bolt tension measurement device indicates adequate pretension or until the bolt fails.

• If failure occurs before reaching the minimum pretension, or if the tensile load increases and then decreases without achieving the required pretension, the fastener assembly may be inadequate.

2. Tool Adequacy:

• Verify that installation tools can provide sufficient output torque to tighten adequately lubricated fastener assemblies to at least 105% of the minimum required pretension.

• Ensure that the tool’s drive chuck is appropriately sized for the fasteners being tightened. For example, when tightening ¾” bolts, the installation tool, as a general rule, should have a square drive chuck of ¾” or larger.

• Be cautious of tools that claim high torque outputs without specifying load conditions, as these claims may not reflect actual performance under load.

3. Installer Proficiency:

• Confirm that installers understand how to employ the selected bolting method correctly.

• Ensure that a snug-tightened condition is achieved before applying the pretensioning method.

• Avoid combining elements from different bolting methods, such as applying a torque value to rotate the nut during the Turn-Of-Nut method or using a torque wrench as an inspection technique after completing the turn.

4. Snug-Tightened Joints:

• Recognize that every bolted joint must be snug-tightened before applying a pretensioning method.

• Understand that the snug-tight condition is critical for methods like Turn-Of-Nut, which rely on the snug position as their starting point.

• Be aware that there are no specific minimum or maximum tension requirements for a “snugged” joint, as defined by AISC’s Specification for Structural Steel Buildings (360) Section J3, and RCSC Table 7.1 (2020)

By conducting thorough Pre-Installation Verification, potential issues can be identified and addressed, leading to more efficient and reliable bolting operations.

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