COUPLERS GRADE 80 KSI ITEMS
Part No. Bar Size O.D Length
No. Inches mm Inches mm Inches mm
C2280M 7 7/8" 22 1.50 38 4.33 110
C2580M 8 1" 25 1.77 45 4.53 115
C2880M 9 1-1/8" 28 1.89 48 4.92 125
C3280M 10 1-1/4" 32 2.24 57 5.51 140
C3680M 11 1-3/8" 36 2.50 63.5 5.91 150
C4380M 14 1-3/4" 43 2.99 76 7.62 193.5
C5780M 18 2-1/4" 57 3.74 95 8.66 220
C6380M 20 2-1/2" 63 4.02 102 10.24 260
C7580M 24 3" 75 4.49 114 11.81 300
C8980M 28 3-1/2" 89 5 127 13.39 340
C10080M 32 4" 100 5.51 140 15 380
FULL LOAD NUT GRADE 80 KSI ITEMS
Part No. Bar Size O.D Length
No. Inches mm Inches mm Inches mm
RN2280M 7 7/8" 22 1.5 38 1.77 45
RN2580M 8 1" 25 1.77 45 1.97 50
RN2880M 9 1-1/8" 28 1.89 48 2.36 60
RN3280M 10 1-1/4" 32 2.24 57 2.56 65
RN3680M 11 1-3/8" 36 2.5 63.5 2.76 70
RN4380M 14 1-3/4" 43 2.99 76 3.74 95
RN5780M 18 2-1/4" 57 3.74 95 4.33 110
RN6380M 20 2-1/2" 63 4.02 102 4.53 115
RN7580M 24 3" 75 4.49 114 5.71 145
RN8980M 28 3-1/2" 89 5.24 133 6.69 170
RN10080M 32 4" 100 5.75 146 7.5 190.5

Coupler Information

Stressbar Steel Systems International, Inc. distributes couplers for all available bar sizes. Our bars are continuously threaded along their entire length and are easily coupled to eliminate the need for field lap spicing. Couplers are designed and manufactured to develop 125% of the published yield strength of the threaded bars.

With our clients in mind, SSSI can ship couplers pre-attached to threaded bars for ease of installation on site. Shipped in easy to handle bundles, our material can be picked up and placed by hand. The following images display projects utilizing our bars and couplers without steel templates. in this case, the "loose" bars with pre-attached couplers were installed individually from the story below.

Installation Procedure Grade 80 + 97 Couplers

  • Mark each bar to be coupled with tape or paint at a distance of half the length of the coupler from bar ends.
  • Fully thread the coupler onto one bar.
  • Align the adjacent bar with the bar containing the coupler.
  • Spin the coupler over the adjacent bar until half of the coupler engages each bar to expose markings on both bars.
  • Align the adjacent bar with the bar containing the coupler.
  • Wrench tight the upper bars to cut slack and secure couplers.