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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The Sealed Radius Corner Hex Body Blind Threaded Insert provides all the spin-resistance features of the Standard Radius Corner Hex Body version in punched holes with the addition of a weathertight PVC foam seal bonded to the underside of its head. This seal will withstand 50 PSI (3.4 bars) of pressure. The radius corners of the body of this insert expand during installation to fill the corners of the hex hole, maximizing spin resistance. A backside flange is also formed, even in multiple thicknesses of materials without any need for adjustments. They are available with either standard Open Ends (as pictured), or Closed Ends for leakage protection past the threads, in a variety of corrosion resistant Materials and Finishes listed.
Unit of Measure

Specifications

Material

 N/A Steel 1010/1008

Thread Size

 N/A 3/8-16

Finish

 N/A Zinc Trivalent Chromate (Hex-Free)

Thread Type

 N/A Unified Coarse (UNC)

Head Outside Diameter

 N/A 0.655 in

Grip Call Out

 N/A 312

Maximum IATD

 N/A 1.170 mm

Maximum Dimension Ilb

 N/A 1.220 mm

Thread Call Out

 N/A 616

Body Features

 N/A Radius Corner Hex Body

End Features

 N/A Closed

Head Features

 N/A Sealed

Maximum Insert Across Flats D

 N/A 0.499 in

Length LB

 N/A 1.445 in

Maximum Grip Size

 N/A 0.250 in

Minimum Grip Size

 N/A 0.115 in

Head Outside Diameter Tolerance (±)

 N/A 0.025 in

Mounting Hole Across Flats

 N/A 0.500 in

Maximum Corner Radius

 N/A 0.040 in

Seal Pressure

 N/A 50 psi3.4 bar

Weathertight

 N/A Up to 50 psiUp to 3.4 bar

Restriction of Hazardous Substances Directive Standard

 N/A Yes

Features and Benefits

Features and Benefits

 N/A
  • Spin Out Resistance in punched hex holes
  • Avoid Stress Fractures and prolong punch & die life
  • Superior Thread Strength from internal rolled thread manufacturing process
  • Threads Gauge before & after installation, preventing thread dilation
  • Reduce Inventory - 250% larger grip range than standard rivet nuts
  • Superior Corrosion Resistance offered by several material/finish options
  • Quality Installation for varying thickness materials needs no adjustment when using special installation tools, locatable anywhere in assembly, before or after finish.

Additional Information

Additional Information

 N/A For optimal performance, specify a radius corner in your hex hole to avoid stress fractures and prolong punch and die life, and use these inserts with Grade 5 or Metric Class 8.8/9.8 mating thread-locking screws. PVC Foam Seal is not recommended for use with petroleum based liquids.

Note

Note

 N/A Contact EFC International directly for design configurations and materials/finishes not specified.

Special Installation tools are available through EFC International. Design options in materials & finishes not listed below are also available directly through EFC.