Also known as tank-strap bolts, these T-bolts are commonly used with a band clamp or a strap to hold fuel tanks and other objects in place. The large T-shaped head provides a secure grip for steady tightening. Length is measured from the top of the head.

Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch. Fine threads are closely spaced to prevent loosening from vibration.

Steel T-bolts without a finish are ready to be painted or finished.

Black-oxide steel T-bolts are mildly corrosion resistant in dry environments.

Zinc-plated steel T-bolts resist corrosion in wet environments.

3D CAD models availableFor technical drawings and 3-D models, click on a part number.

Head

Thread

Size Lg. Threading Thread

Lg. Thread

Spacing Wd. Thick. Tensile Strength, psi Each

Steel

3/8"-16 2 15/16" Partially Threaded 1 1/2" Coarse 1 3/4" 3/8" 120,000 91285A125 $7.76

3/8"-16 3 11/16" Partially Threaded 1 1/2" Coarse 2" 3/8" 120,000 91285A121 12.01

1/2"-13 3 3/4" Partially Threaded 2 1/2" Coarse 2" 1/2" 120,000 91285A123 10.05

1/2"-20 3 3/4" Partially Threaded 2 1/2" Fine 2" 1/2" 120,000 91285A124 11.68

Black-Oxide Steel

1/4"-20 2 5/8" Partially Threaded 1 1/2" Coarse 1 1/4" 1/4" Not Rated 91285A117 11.37

3/8"-16 5 3/16" Partially Threaded 4" Coarse 1 3/4" 3/8" Not Rated 91285A118 15.75

3/8"-24 3 11/16" Partially Threaded 1 1/2" Fine 2" 1/2" 120,000 91285A111 13.22

1/2"-13 6 1/4" Partially Threaded 5" Coarse 3" 1/2" Not Rated 91285A119 22.55

Zinc-Plated Steel

3/8"-16 2 15/16" Partially Threaded 1 1/2" Coarse 1 3/4" 3/8" 120,000 91285A114 9.69

3/8"-16 3 11/16" Partially Threaded 1 1/2" Coarse 2" 3/8" 120,000 91285A112 9.69

3/8"-24 3 11/16" Partially Threaded 1 1/2" Fine 2" 1/2" 120,000 91285A113 16.42

1/2"-13 3 3/4" Partially Threaded 2 1/2" Coarse 2" 1/2" 120,000 91285A115 11.49

1/2"-20 3 3/4" Partially Threaded 2 1/2" Fine 2" 1/2" 120,000 91285A116 13.62