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U-BOLTS

U-BOLTS

U-bolts are “U” shaped bolts with threads on each end. They are primarily used to hang piping in industrial applications and are often called out by the nominal size pipe they are hanging (e.g. 2” U-bolts are used to hang 2” NPS pipe). Standard U-bolts typically come with nuts, however, the nuts need to be specified for special grade U-bolts .

There are no standard dimensions for exotic high nickel and specialty stainless U-bolts (like Hastelloy® C276 U-bolts, Duplex 2205 U-bolts, Nickel 200 U-bolts, 317L Stainless U-bolts), so Nickel Systems usually supplies them to Grinnell Standard Style UB – 137 regular dimensions. However, if special U-bolts with longer tangents and threads are required, they can also be manufactured, as well as other types of “bent” bolts. Nickel Systems would require a print in order to quote special dimensions per customer requirements.

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Specifications & Technical Data

Dimensions

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Pin Fields Diameter, D, and UNC Thread Inside Length, L Inside Width, C Thread Length, T Nominal Pipe Size
3, D 5, LCT Basic Max. Min. Basic Max. Min. Max. Min.
04 012 1/4 – 20 1.250 1.280 1.220 0.563 0.593 0.533 0.810 0.690 1/4
04 013 1/4 – 20 1.250 1.280 1.220 0.750 0.780 0.720 0.685 0.565 3/8
04 022 1/4 – 20 2.250 2.280 2.220 0.750 0.780 0.720 1.560 1.440 3/8
04 017 1/4 – 20 1.750 1.780 1.720 1.000 1.030 0.970 1.060 0.940 1/2
04 020 1/4 – 20 2.000 2.030 1.970 1.000 1.030 0.970 1.060 0.940 3/4
04 031 1/4 – 20 3.125 3.155 3.095 1.000 1.030 0.970 1.560 1.440 3/4
04 023 1/4 – 20 2.250 2.280 2.220 1.125 1.155 1.095 1.310 1.190 3/4
04 027 1/4 – 20 2.750 2.780 2.720 1.125 1.155 1.095 1.435 1.315 1
04 034 1/4 – 20 3.438 3.468 3.408 1.125 1.155 1.095 2.435 2.315 1
04 030 1/4 – 20 3.000 3.030 2.970 1.250 1.280 1.220 1.435 1.315 1 1/4
04 032 1/4 – 20 3.250 3.280 3.220 1.250 1.280 1.220 1.435 1.315 1 1/2
05 021 5/16 – 18 2.188 2.218 2.158 1.375 1.405 1.345 1.435 1.315 1/2
05 022 5/16 – 18 2.188 2.218 2.158 1.375 1.405 1.345 1.060 0.940 3/4
05 023 5/16 – 18 2.188 2.218 2.158 1.500 1.530 1.470 1.060 0.940 1
05 026 5/16 – 18 2.688 2.718 2.658 1.500 1.530 1.470 1.185 1.065 1 1/4
05 045 5/16 – 18 4.500 4.530 4.470 1.750 1.780 1.720 2.060 1.940 1 1/4
05 027 5/16 – 18 2.688 2.718 2.658 1.750 1.780 1.720 1.060 0.940 1 1/2
05 047 5/16 – 18 4.750 4.780 4.720 1.750 1.780 1.720 3.060 2.940 1 1/2
05 032 5/16 – 18 3.188 3.218 3.158 1.750 1.780 1.720 1.060 0.940 2
05 056 5/16 – 18 5.625 5.685 5.565 2.000 2.030 1.970 3.060 2.940 2
05 037 5/16 – 18 3.688 3.718 3.658 2.000 2.030 1.970 1.060 0.940 2 1/2
06 022 3/8 – 16 2.250 2.280 2.220 2.000 2.030 1.970 1.310 1.190 1/2
06 023 3/8 – 16 2.250 2.280 2.220 2.000 2.030 1.970 1.310 1.190 3/4
06 025 3/8 – 16 2.250 2.530 2.470 2.500 2.530 2.470 1.310 1.190 1
06 027 3/8 – 16 2.750 2.780 2.720 2.500 2.530 2.470 1.185 1.065 1 1/4
06 026 3/8 – 16 2.625 2.655 2.595 2.500 2.530 2.470 1.310 1.190 1 1/2
06 031 3/8 – 16 3.125 3.155 3.095 3.000 3.030 2.970 1.310 1.190 2
06 036 3/8 – 16 3.625 3.655 3.595 3.000 3.030 2.970 1.310 1.190 2 1/2
06 066 3/8 – 16 6.625 6.685 6.565 3.000 3.030 2.970 3.060 2.940 2 1/2
06 041 3/8 – 16 4.125 4.155 4.095 3.000 3.030 2.970 1.310 1.190 3
06 055 3/8 – 16 5.500 5.560 5.440 3.500 3.530 3.470 2.310 2.190 3 1/2
08 045 1/2 – 13 4.500 4.530 4.470 3.500 3.530 3.470 1.685 1.565 2 1/2
08 050 1/2 – 13 5.000 5.060 4.940 3.500 3.530 3.470 1.560 1.440 3
08 085 1/2 – 13 8.500 8.590 8.410 4.000 4.030 3.970 3.060 2.940 3
08 055 1/2 – 13 5.500 5.560 5.440 4.000 4.030 3.970 1.560 1.440 3 1/2

 

U-Bolt Specifications

  • ASME B18.31.5-2011
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Industries We Serve

Nickel Systems provides high quality exotic grade materials that hold up in the toughest, most severe heat and corrosive environments. With our large inventory of specialty fasteners in stock, we are always ready to answer the call to serve the most challenging applications.

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Pulp & Paper Mills
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Oil & Gas
A Close Up Of A Metal Pipe With Nuts And Bolts On It A Black And White Drawing Of A Bison Jumping In The Air
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