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.
A490 ROUND HEAD T.C. BOLT PLAIN W/ A563 DH HVY HEX NUT & F436 WASHER (INCH)
Unit of Measure
1 2 

Item #

Item Name

Package Quantity

Web Price

100C700BT4/NW N/A 1-8 X 7 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 70 QUOTE
112C275BT4/NW N/A 1 1/8-7 X 2 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 90 $1,711.21
112C300BT4/NW N/A 1 1/8-7 X 3 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 85 $1,428.53
112C325BT4/NW N/A 1 1/8-7 X 3 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 80 $1,383.59
112C350BT4/NW N/A 1 1/8-7 X 3 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 80 $1,305.18
112C375BT4/NW N/A 1 1/8-7 X 3 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 75 $1,389.89
112C400BT4/NW N/A 1 1/8-7 X 4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 75 $1,307.15
112C425BT4/NW N/A 1 1/8-7 X 4 1/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 70 $1,253.67
112C450BT4/NW N/A 1 1/8-7 X 4 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 70 $1,471.60
112C475BT4/NW N/A 1 1/8-7 X 4 3/4 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 65 $1,404.93
112C500BT4/NW N/A 1 1/8-7 X 5 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 70 QUOTE
112C550BT4/NW N/A 1 1/8-7 X 5 1/2 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 60 $1,413.12
112C600BT4/NW N/A 1 1/8-7 X 6 TENSION CONTROL BOLT A490 TYPE 1 (WITH NUT AND FLAT WASHER) N/A 60 QUOTE
Unit of Measure
1 2