U-Bolts

Key Features

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What Is a U-Bolt?

A u-bolt is a curved bolt that features threads on each end. U-Bolts act as the simplest but also the most widely used pipe guiding restraint. Custom sizes are readily available upon request including variable: rod thickness, width, length, and thread length.

APP's U-bolts are built to the standard Grinnell Figure 137 specifications and come with nuts included.
APP’s ProTek U-Bolts are in stock and combine the strength and simplicity of a u-bolt with our advanced polymer technology.
Custom sizes are available upon request including variable: rod thickness, width, length, and thread length
Custom finishes and materials include: Xylan, Teflon coated, or Cadmium Plated.

U-Bolt Options

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Standard U-Bolt

Standard u-bolts are bent to form a U that fits around a pipe or tube. It is threaded on both ends to allow attachment to a beam or structure.

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ProTek U-Bolt

ProTek u-bolts restrain the pipe while shielding it from metal-to-metal contact and rough abrasion from pipe movement.

U-Bolt Specifications

 

Standard U-Bolt

Composition

Carbon Steel or Stainless Steel

Tensile Strength

1,500 lbs. per square inch (ASTM D412)

Temperature Range

-67°F to 230°F

Installation

Four heavy hex nuts

Potential Accessories

ProTek Rod, ProTek Package (ProTek Wear Pad and ProTek Flat Plate)

Custom Manufacturing

  • Eliminates metal-to-metal contact, preventing corrosion, and extending the life of the piping system
  • Liner is formed directly into the strap's inner diameter to ensure high quality performance
  • Since the liner is not bonded there is no concern for delamination
  • Our liner contains UV inhibitors to protect against UV attack

Benefits

  • In stock and available for immediate shipping
  • Eliminates metal to metal contact that could damage pipe coatings and lead to corrosion
  • Coating has a low coefficient of friction to allow pipe movement
  • Low cost of installation
  • Product helps minimizes maintenance and operational costs throughout the lifetime of the piping system
  • Can be used on any type of pipe

Standard Sizes

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NPS Diameter Inside Width Length
1/2" 1/4" 15/16" 3-5/15"
3/4" 1/4" 1-1/18" 3-7-16"
1" 1/4" 1-3/8" 3-1/2"
1-1/4" 3/8" 1-3/4" 3-3/4"
1-1/2" 3/8" 2" 4"
2" 3/8" 2-7/16" 4-9/16"
2-1/2" 1/2" 3" 5-3/16"
3" 1/2" 3-5/8" 5-3/4"
3-1/2" 1/2" 4" 6-3/8"
4" 1/2" 4-5/8" 6-3/4"
5" 1/2" 5-5/8" 8"
6" 5/8" 6-3/4" 9-7/16"
8" 5/8" 6-3/4" 11-7/16"
10" 3/4" 10-7/8" 13-3/4"
12" 7/8" 12-7/8" 16"
14" 7/8" 14-1/4" 17-1/4"
16" 7/8" 16-1/4" 19-1/4"
18" 1" 18-1/4" 21-5/8"
20" 1" 18-1/4" 24-5/8"
22" 1" 22-1/4" 25-5/8"
24" 1" 24-1/4" 27-5/8"
30" 1" 30-1/4" 35"
36" 1" 36-1/4" 40-1/4"
 

 

Product FAQs

Do you have these in stock?

APP keeps sizes 0.5 NPS - 8" NPS HDG ProCoat u-bolts in stock. We are able to secure other standard sizes in a day.

Can you make custom sizes?

Yes, APP can customize the following:

  • Rod length
  • Radius
  • Rod diameters
  • Shapes (square)
  • Thread length

How many nuts come with them?

Our u-bolts come standard with 4 nuts. If you require more or less, let us know.

Can you provide plastic rod isolators?

Yes, APP's ProTek rod is available with or without ProTek u-bolts. APP also sells ProTek rods by desired length up to 10 feet.

What are the load ratings?

U-bolts are not load rated.