EFC International
EFC International
1940 Craigshire St. Louis,
MO 63146-4008
Phone: 1 314.434.28881
Contact: www.efc-intl.com/contact
Website: www.efc-intl.com
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Pre-Opened Constant Tension Bands are the ideal fasteners for hose-spigot connections which are subject to extreme temperature changes, or which tend to "slip away" under pressure of the clamp. This version is secured by a small plastic clip. After slipping the clamp onto the hose, this clip can be easily removed by hand. Pre-opened, (and if desired, pre-positioned on the hose) these spring band clamps are quick to assemble and easy to install. Their integrated spring retaining mechanism provides a continuously readjusting dynamic tightening effect. They are available in band widths of 12 and 15 mm and will accommodate nominal diameters from 13 up to 80 mm.
Pre-Opened Constant Tension Band Clamps
Unit of Measure
1 2 3 4 

Item #

Item Name

Band Width (Decimal)

Nominal Diameter (Decimal)

Expanded Diameter

15N0000165-MC104Q N/A 53.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.472 in12.00 mm N/A 2.087 in53 mm N/A 2.205 in55.80 mm
15N0000166-MC104Q N/A 55.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.472 in12.00 mm N/A 2.165 in55 mm N/A 2.283 in58.00 mm
15N0000167-MC104Q N/A 60.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.472 in12.00 mm N/A 2.362 in60.00 mm N/A 2.480 in63.00 mm
15N0000168-MC104Q N/A 15.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.591 in15 mm N/A 0.650 in16.80 mm
15N0000169-MC104Q N/A 16.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.630 in16 mm N/A 0.677 in17.20 mm
15N0000170-MC104Q N/A 17.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.669 in17 mm N/A 0.728 in18.50 mm
15N0000171-MC104Q N/A 19.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.748 in19 mm N/A 0.827 in21.00 mm
15N0000172-MC104Q N/A 20.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.787 in20 mm N/A 0.850 in21.60 mm
15N0000173-MC104Q N/A 21.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.827 in21 mm N/A 0.894 in22.70 mm
15N0000174-MC104Q N/A 23.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.906 in23 mm N/A 1.091 in24.70 mm
15N0000175-MC104Q N/A 24.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.945 in24 mm N/A 1.024 in26.00 mm
15N0000176-MC104Q N/A 25.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 0.984 in25 mm N/A 1.055 in26.80 mm
15N0000177-MC104Q N/A 27.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.063 in27 mm N/A 1.142 in29.00 mm
15N0000178-MC104Q N/A 29.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.142 in29 mm N/A 1.220 in31.00 mm
15N0000179-MC104Q N/A 32.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.260 in32 mm N/A 1.378 in35.00 mm
15N0000180-MC104Q N/A 35.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.378 in35 mm N/A 1.496 in38.00 mm
15N0000181-MC104Q N/A 36.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.417 in36 mm N/A 1.516 in38.50 mm
15N0000182-MC104Q N/A 37.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.457 in37.00 mm N/A 1.575 in40.00 mm
15N0000183-MC104Q N/A 40.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.575 in40 mm N/A 1.673 in42.50 mm
15N0000184-MC104Q N/A 42.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.654 in42 mm N/A 1.752 in44.50 mm
15N0000185-MC104Q N/A 44.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.732 in44 mm N/A 1.831 in46.50 mm
15N0000186-MC104Q N/A 46.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.811 in46 mm N/A 1.913 in48.60 mm
15N0000187-MC104Q N/A 47.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.850 in47 mm N/A 1.969 in50.00 mm
15N0000188-MC104Q N/A 49.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.929 in49 mm N/A 2.047 in52.00 mm
15N0000189-MC104Q N/A 50.00 Millimeter (mm) Nominal Diameter Pre-Opened Constant Tension Band Clamp N/A 0.591 in15.00 mm N/A 1.969 in50 mm N/A 2.087 in53.00 mm
Unit of Measure
1 2 3 4