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Re: threaded rod couplers

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Many of these couplers are proprietary vendor items but it is my experience that they are generally made to develop the strength of the rods being joined together.

For examples of hex and sleeve nuts from Portland Bolt see:

And Simpson Strong Tie CNW Couplers:

Thomas Hunt, S.E.

"Christopher Banbury" <cbanbury(--nospam--at)>
11/29/2007 08:47 AM
Please respond to seaint
threaded rod couplers

Does anyone know if threaded rod couplers, say ½” to ½”, are manufactured to an ASTM standard as are bolts and nuts? What assurances are there that the couplers will generate the full tensile design strength of the threaded rod (A36, A307)? Are couplers proprietary items that require the manufacturer’s certification or warranty? What grade of steel are they fabricated from?
Christopher Banbury, PE
Ark Engineering, Inc.
PO Box 10129, Brooksville, FL 34603
22 North Broad ST, Brooksville, FL 34601
Phone: (352) 754-2424
Fax: (352) 754-2412

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