STANDARD STRENGTH
COUPLER IDENTIFICATION
Example: CNR-610
CNR = Coupler Nut Reducer
610 = 3/4″ NC to 1-1/4″ – 7 NC Thread
MATERIAL GRADE
Standard Coupler Nuts are ASTM A563
Grade A (SAE Grade 2) and are used
with A36, A307, F1554 Gr36 & F1554 Gr55 rod
AUTOTIGHT REDUCING COUPLERS
HIGH STRENGTH
COUPLER IDENTIFICATION
High strength reducing couplers have
notches on the small end for identification
MATERIAL GRADE
High strength reducing couplers are Grade 5
and are used with B7, F1554 & Gr105 rod
AUTOTIGHT HIGH-STRENGTH REDUCING COUPLERS
