ERICO B-Series LENTON LOCK - Manual (Page 2)

INSTRUCTION SHEET
Table 1. Torque values for coupler sizes #4 (12mm) through #9 (30mm)
Pre-Torque is not required for these sizes
Table 2. Alternate Step 4: Two-step torque sequence for coupler sizes 32(#10) and larger
Rebar Designation Coupler Socket Size
Pre Torque
(all bolts if required)
Average Torque to
Shear Bolts
Number of
Bolts
In-lb Metric Canada
Soft
Metric
in mm ft-lb N-m ft-lb N-m
#10 32 - 32 LL32B1 13/16 21 400 545 500 680 8
- 34 - - LL36B1 13/16 21 400 545 550 750 10
#11 36 35 M 36 LL36B1 13/16 21 400 545 550 750 10
- 38 - - LL40B1 13/16 21 400 545 580 790 12
- 40 - - LL40B1 13/16 21 400 545 580 790 12
#14 43 45 M 43 LL43B1 1 25 675 915 960 1300 14
#18 57 55 M 57 LL57B1 1 25 675 915 960 1300 18
Transition Splices: LENTON  LOCK is designed for use as a one-step transition/reducer splice on all types of rebar.
Contact ERICO for details.
Closure Pour Splices: Refer to instruction sheet PDF113 for details. Additional copies of instructions and application
information are available at www.erico.com
Alternate Step 4:
Alternate Step 4 is required for sizes 40 through 57(#18), and for Caltrans Ultimate requirements sizes 32(#10) and 36(#11).
Pre-torque the bolts beginning in the center of the coupler and working to the outside (A to D). See table 2. Then go back to bolt A
and finish tightening the bolts, once again beginning in the center of the coupler and working to the outside (A to D). The head of the
bolt shears off when the proper torque is achieved. A standard wrench, impact wrench or nut runner may be utilized for the final
tightening of the bolts.
If bolt head does not shear, the installer should verify the appropriate torque was met (see Table 2). If a minimum cover must
be maintained, the head can be cut off after the proper torque has been applied.
If during installation the bolt strips, as defined by a loss of resistance to the applied torque, stop the installation immediately.
Remove the un-sheared damaged bolt. Contact ERICO for LENTON
 Technical Support
Repeat procedure for other end of the sleeve.
Rebar Designation Coupler Socket Size
Average Torque to
Shear Bolts
Number
of Bolts
In-lb Metric Canada
Soft
Metric
in mm ft-lb N-m
- 10 - 10 LL12B1 1/2 13 150 205 6
#4 12 10 M 13 LL12B1 1/2 13 150 205 6
- 14 - - LL16B1 1/2 13 150 205 6
#5 16 15 M 16 LL16B1 1/2 13 150 205 6
- 18 - - LL20B1 1/2 13 150 205 8
#6 20 20 M 19 LL20B1 1/2 13 150 205 8
#7 22 - 22 LL22B1 5/8 16 250 340 8
#8 25 25 M 25 LL25B1 5/8 16 350 475 8
#9 28 30 M 29 LL28B1 5/8 16 350 475 10
- 30 - - LL28B1 5/8 16 350 475 10
TECHNICAL SUPPORT: PDF116_K 2 of 2
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