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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AH-Type Radius Corner Hex Body Inserts provide exceptional spin out resistance in punched hex holes and are recommended for use with mating thread-locking fasteners. The radius corners of these inserts expand and fill the corners of a hex hole. (These insert can help avoid stress fractures of your material and prolong punch and die life by specifying a radius corner in the hex hole.) These inserts are available with either standard Open End (as pictured), or Closed Ends for leakage protection past the threads. For complete weathertight security, we also offer a variation with a foam seal under the heading "Blind Threaded Inserts" in this section of the Encyclopedia.
Unit of Measure

Specifications

Thread Size

 N/A 8-32

Finish

 N/A Yellow Zinc Dichromate (hexavalent Chromate)

Head Diameter

 N/A 0.375 in

Length L

 N/A 0.435 in

Body Features

 N/A Radius Corner Hex Body

End Features

 N/A Open

Maximum Grip Size

 N/A 0.130 in

Minimum Grip Size

 N/A 0.080 in

Hole Size

 N/A 0.250 in

Head Height

 N/A 0.027 in

Maximum Insert Across Flats D

 N/A 0.249 in

Maximum Dimension Il

 N/A 0.295 in

Maximum Radius Corner R

 N/A 0.015 in

Material

 N/A Steel 1010/1008

Grip Call Out

 N/A 130

Thread Call Out

 N/A 832

Restriction of Hazardous Substances Directive Standard

 N/A No

Weight

 N/A 9.5 lb

Industry Standards/Certifications

 N/A Unified National Coarse (UNC)

Additional Information

Additional Information

 N/A Radius Corner Hex Body Inserts are designed to be used with Grade 5 or Metric Class 8.8/9.8 mating screws, and can be installed either prior to or after finish. For varying degrees of corrosion resistance, these inserts are offered in several material/finish options to suit your needs. Please contact EFC International directly for design configurations and materials/finishes not specified.

Features and Benefits

Features and Benefits

 N/A
  • Maximum spin out resistance in punched hex holes in varying thickness materials
  • Avoid Stress Fractures and prolong punch & die life
  • Superior Thread Strength from internal rolled thread manufacturing process
  • Threads Gauge before & after installation
  • Reduce Inventory - Grip range is 2-1/2 times that of conventional rivet nuts
  • Superior Corrosion Resistance offered by several finish options
  • Quality Installation - Locate special installation tools anywhere in assembly, even in variable thickness materials, before or after finish.

Note

Note

 N/A Special Installation tools are available by contacting EFC-International.