Fit-Up Bolts and Speed Nuts

Dependable Accessories for Your Next Concrete Construction Project
Tengco’s speed bolts are the ideal option for any highway construction project. These parts are typically used when securing steel form panels. When you choose Tengco as your concrete construction project parts supplier, you can feel confident you’re getting the most durable hardware available on the market today. 3/4" diameter fit-up bolts are manufactured using cold heading and made from medium carbon Gr.5 material plain.
- Tapered nose acts as a draft pin and helps arrange the steel panels
- Design of the threads and the clearances between the nut and fit up bolt allows for quick assembly and dismantling of the form
- Thread design permits concrete to be easily knocked out of the threads
- Reusable but not designed for permanent connections
Our catalog also includes speed nuts, which are used to fasten together the bolts. They’re also produced using cold heading and made to meet ASTM A563 Gr. C.
- Speed nuts have a greater height for better thread engagement and improved resistance to widening and stretching
- Speed nuts are ideal for use in structural applications.
- These parts are used with 3/4” diameter heavy hex fit-up bolts.
No matter which part you order, you can feel confident it will be designed to meet your exact specifications. If you have a project with specific requirements, our team can work with you to determine the optimal manufacturing method and metal for the parts. You can get started today by submitting a contact form and sharing a drawing of the part with our team.

Speed Nuts and Bolts You Can Rely On
At Tengco, creating durable parts is only part of our mission. We also want to make sure you have peace of mind in knowing you’ll never run out of parts again. We’ve designed our supply chain to minimize disruptions and maximize on-time deliveries. Here’s how we do it:
We Use Stock and Release
Tengco delivers inventory management solutions, so when you order your parts for the first time, we ask you how much you expect to use in a single month. We then ship the parts you need and produce 2-4 months’ worth of speed nuts and other parts so you never have too much or too little in inventory at any time.
We Partner With Suppliers Worldwide
Tengco’s global supplier network is built to ensure that companies worldwide can access the metal parts they need to get the job done on time, every time.

CBH342.1-P
- 3/4-6 X 2 Heavy Hex Fit-Up Bolt
- Weight: 371.5500000
Diameter: | 3/43/4 |
Threads Per Inch: | 66 |
Length: | 22 |
Material/Grade: | GR5GR5 |
Coating: | PlainPlain |
Extra Comment: |
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CBH344.1-P
- 3/4-6 X 4 Heavy Hex Fit-Up Bolt
- Weight: 625.7100000
Diameter: | 3/43/4 |
Threads Per Inch: | 66 |
Length: | 44 |
Material/Grade: | GR5GR5 |
Coating: | PlainPlain |
Extra Comment: | 2" Min Thread Fit Up Thread2" Min Thread Fit Up Thread |
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CNJ346-C
- 3/4-6 Heavy Hex Fit-Up Nut - Zinc Clear
- Weight: 173.0000000
Diameter: | 3/43/4 |
Threads Per Inch: | 66 |
Length: | N/AN/A |
Material/Grade: | A563 GR CA563 GR C |
Coating: | Zinc ClearZinc Clear |
Extra Comment: |
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CNJ346.1-P
- 3/4-6 Heavy Hex Fit-Up Nut - Plain
- Weight: 171.6600000
Diameter: | 3/43/4 |
Threads Per Inch: | 66 |
Length: | N/AN/A |
Material/Grade: | A563 GR CA563 GR C |
Coating: | PlainPlain |
Extra Comment: | Fit Up ThreadFit Up Thread |
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