GRC Couplings and Nipples

Columbia-MBF provides rigid steel couplings and nipples that are compatible with IMC and Rigid (GRC) Steel Conduits and Kwik-Couple®® Conduits. Refer to the individual charts for available sizes and box quantities.

Columbia-MBF steel couplings and nipples are Certified to Canadian Standards Association Safety Standard CSA C22.2 No.45.1 and manufactured in accordance with ANSI C80.1

CSA

Galvanized Rigid Conduit (GRC) Couplings

Trade SizeMetric DesignatorNominal O.D. (A)2Length (B)1Threades Per Inch1Approximate Weight per 100 PiecesStandard Package
1Mimimum requirement as per CSA Standard
2For information only, not a requirement as per CSA Standard
inmminmmlbkg
1/2161.0125.71 5/841.314125.4100
3/4211.2531.81 41/6441.714188.250
1271.5338.71 31/3250.011 1/23013.625
1 1/4351.8747.52 1/3251.611 1/23716.825
1 1/2412.1654.72 1/1652.411 1/25223.625
2532.6567.32 1/854.011 1/27232.715
2 1/2633.2582.63 3/1681.0817077.18
3783.8798.33 5/1684.1821095.36
3 1/2914.50114.33 13/3286.58340154.26
41034.88123.83 33/6489.38300136.15
51296.00152.43 61/64100.48475215.51
61557.20182.94 1/4108.08765347.01

Galvanized Rigid Conduit (GRC) Nipples

Trade SizeMetric DesignatorLength (A)Total Thread Length (B)1Threades Per Inch1Approximate Weight per 100 PiecesStandard Package
1Mimimum requirement as per CSA Standard
A tolerance of minus one thread applies to Total length of Thread
inmminmmlbkg
1/216(Close) 1 1/8290.7819.81462.725
1/2161 1/2380.7819.81483.625
1/2162510.7819.814125.425
1/2162 1/2640.7819.814156.825
1/2163760.7879.814198.625
1/2163 1/2890.7819.8142210.025
1/21641020.7819.8142611.825
1/21651270.7819.8143315.025
1/21661520.7819.8144018.125
1/21682030.7819.8145424.525
1/216102540.7819.8146830.825
1/216123050.7819.8148237.225
3/421(Close) 1 3/8350.7920.11494.125
3/4211 1/2380.7920.114104.525
3/4212510.7920.114146.425
3/4212 1/2640.7920.114198.625
3/4213760.7920.1142410.925
3/4213 1/2890.7920.1142812.725
3/42141020.7920.1143415.425
3/42151270.7920.1144319.525
3/42161520.7920.1145223.625
3/42182030.7920.1147333.125
3/421102540.7920.1148940.425
3/421123050.7920.11410949.425
127(Close) 1 1/2380.9824.911 1/2167.325
1272510.9824.911 1/22210.025
1272 1/2640.9824.911 1/22812.725
1273760.9824.911 1/23616.325
1273 1/2890.9824.911 1/24319.525
12741020.9824.911 1/24922.225
12751270.9824.911 1/26429.025
12761520.9824.911 1/27835.425
12782030.9824.911 1/210949.425
127102540.9824.911 1/213862.625
127123050.9824.911 1/216675.325
1 1/435(Close) 1 5/8411.0125.711 1/22210.025
1 1/4352511.0125.711 1/22812.725
1 1/4352 1/2641.0125.711 1/23716.825
1 1/4353761.0125.711 1/24721.325
1 1/4353 1/2891.0125.711 1/25524.925
1 1/43541021.0125.711 1/26629.925
1 1/43551271.0125.711 1/28438.125
1 1/43561521.0125.711 1/210045.425
1 1/43582031.0125.711 1/213661.725
1 1/435102541.0125.711 1/217679.810
1 1/435123051.0125.711 1/221698.010
1 1/241(Close) 1 3/4441.0326.211 1/22812.725
1 1/2412511.0326.211 1/23415.425
1 1/2412 1/2641.0326.211 1/24420.025
1 1/2413761.0326.211 1/25625.425
1 1/2413 1/2891.0326.211 1/26830.825
1 1/24141021.0326.211 1/28036.325
1 1/24151271.0326.211 1/210346.725
1 1/24161521.0326.211 1/212255.325
1 1/24182031.0326.211 1/217077.110
1 1/241102541.0326.211 1/221698.010
1 1/241123051.0326.211 1/2260117.910
253(Close) 2511.0626.911 1/24420.025
2532 1/2641.0626.911 1/25926.825
2533761.0626.911 1/27232.725
2533 1/2891.0626.911 1/28839.925
25341021.0626.911 1/210346.725
25351271.0626.911 1/213259.920
25361521.0626.911 1/216072.620
25382031.0626.911 1/222099.810
253102541.0626.911 1/2285129.310
253123051.0626.911 1/2335152.010
2 1/263(Close) 2 3/4701.5739.988438.110
2 1/2633761.5739.9810045.410
2 1/2633 1/2891.5739.9812054.410
2 1/26341021.5739.9815068.010
2 1/26351271.5739.9819789.48
2 1/26361521.5739.98240108.98
2 1/26382031.5739.98329149.28
2 1/263102541.5739.98422191.45
2 1/263123051.5739.98505229.15
378(Close) 2 5/8671.6341.4811853.510
3783761.6341.4813059.010
3783 1/2891.6341.4815771.25
37841021.6341.4820090.75
37851271.6341.48260117.95
37861521.6341.48300136.15
37882031.6341.48411186.45
378102541.6341.48528239.55
378123051.6341.48630285.85
3 1/291(Close) 2 3/4701.6842.7816072.65
3 1/29141021.6842.78240108.94
3 1/29151271.6842.78320145.24
3 1/29161521.6842.78373169.24
3 1/29182031.6842.78510231.33
3 1/291102541.6842.78655297.13
3 1/291123051.6842.78785356.13
4103(Close) 2 7/8731.7343.9818081.65
410341021.7343.98285129.34
410351271.7343.98380172.44
410361521.7343.98440199.64
410382031.7343.98600272.23
4103102541.7343.98775351.53
4103123051.7343.98925419.63
5129(Close) 3761.8446.78240108.91
512951271.8446.78480217.71
512961521.8446.78600272.21
512982031.8446.78825374.21
5129102541.8446.781055478.51
5129123051.8446.781260571.51
6155(Close) 3 1/8791.9549.58350158.81
615551271.9549.58660299.41
615561521.9549.58820372.01
615582031.9549.581125510.31
6155102541.9549.581440653.21
6155123051.9549.581720780.21