Coburn-Myers Fastening Systems, Inc.
Coburn-Myers Fastening Systems, Inc.
3211 West 9th Street, Trainer, PA 19061-5242
Toll Free: (800) 662-7459
E-Mail: sales@coburnmyers.com
Web site: www.coburnmyers.com
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A tension control bolt (TC bolt) is a heavy duty bolt used in steel frame construction. The head is usually domed and is not designed to be driven. The end of the shank has a spline on it which is engaged by a special power wrench which prevents the bolt from turning while the nut is tightened. When the appropriate torque is reached the spline shears off.
A325 ROUND HEAD T.C. BOLT PLAIN W/ A563 DH HVY HEX NUT & F436 WASHER (INCH)
Unit of Measure
1 2 3 

Item #

Item Name

Package Quantity

Web Price

62C350BT1/NW N/A 5/8-11 X 1 1/2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 485 $1,089.19
62C175BT1/NW N/A 5/8-11 X 1 3/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 460 $1,090.85
62C200BT1/NW N/A 5/8-11 X 2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 440 $1,074.65
62C225BT1/NW N/A 5/8-11 X 2 1/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 420 $1,076.57
62C250BT1/NW N/A 5/8-11 X 2 1/2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 400 $1,073.70
62C275BT1/NW N/A 5/8-11 X 2 3/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 375 QUOTE
62C300BT1/NW N/A 5/8-11 X 3 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 360 $1,082.10
75C175BT1/NW N/A 3/4-10 X 1 3/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 300 $744.48
75C200BT1/NW N/A 3/4-10 X 2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 280 $728.73
75C225BTI/NW N/A 3/4-10 X 2 1/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 270 $733.98
75C250BT1/NW N/A 3/4-10 X 2 1/2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 250 $770.41
75C275BT1/NW N/A 3/4-10 X 2 3/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 250 $906.91
75C300BTI/NW N/A 3/4-10 X 3 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 240 $925.63
75C325BT1/NW N/A 3/4-10 X 3 1/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 230 QUOTE
75C350BT1/NW N/A 3/4-10 X 3 1/2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 220 $1,077.51
75C375BT1/NW N/A 3/4-10 X 3 3/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 200 $1,035.06
75C400BT1/NW N/A 3/4-10 X 4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 200 $1,158.47
75C425BT1/NW N/A 3/4-10 X 4 1/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 180 $1,088.30
75C450BT1/NW N/A 3/4-10 X 4 1/2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 180 QUOTE
75C475BT1/NW N/A 3/4-10 X 4 3/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 180 $1,158.96
75C500BT1/NW N/A 3/4-10 X 5 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 160 $1,061.45
75C525BT1/NW N/A 3/4-10 X 5 1/4 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 160 $1,093.79
75C550BT1/NW N/A 3/4-10 X 5 1/2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 150 $1,055.80
75C600BT1/NW N/A 3/4-10 X 6 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 150 $1,112.50
87C200BT1/NW N/A 7/8-9 X 2 TENSION CONTROL BOLT A325 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 200 $767.84
Unit of Measure
1 2 3