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ELFB Taper Form Bolt


The ELFB taper bolt is used to firmly attach a LENTON taper-threaded coupler onto formwork in precast and cast-in-place construction. This reusable form saving accessory allows forms to be pre-drilled with the correct spacing of the reinforcing steel, which speeds construction and allows the forms to be re-used on repetitive construction elements. This system can be used in conjunction with coupler boxes to eliminate the use of bend-out-boxes and also helps eliminate protruding dowel bars.

The screw-in bolt is designed to keep dirt, water and concrete slurry out of the coupler during the concrete pour. The bolt eliminates the need for form saving plates and simplifies the use of standard couplers in form saving applications.​


  • Multiple lengths available depending on form thickness
  • Used in both form saving and coupler box applications
  • Bar end protector included to protect the LENTON taper thread
  • Durable, re-usable and long lasting
  • Saves time and money


Part Number ELFB30X040
Material Steel
Nut Included Yes
Form Thickness (FT) 0.13" – 1.50"
Rebar Size, Metric 30 mm
Length (L) 5.12"
Outer Diameter (OD) 1.18"
Socket Width (SW) 1 7/8"
Unit Weight 2.7 lb
Number of Washers 1
Standard Packaging Quantity 10 pc
UPC 78285688860
Length dimension is for reference only.
Sizes not shown may be available by special order. Contact your LENTON representative for more information.

Pentair, CADDY, CADWELD, CRITEC, ERICO, ERIFLEX, ERITECH and LENTON are owned by Pentair or its global affiliates. All other trademarks are the property of their respective owners. Pentair reserves the right to change specifications without prior notice.


Instruction Sheets