AL Type Inserts have a knurled body with a low-profile, large diameter head for maximum all-around strength and spin out resistance in drilled or punched holes. During insertion, the knurled body expands 360º to fill the hole, creating exceptional torque strength and resistance to vibration. A backside flange is formed, even in multiple thicknesses of materials without any need for adjustments. These inserts are to be used with Grade 5 or Metric 8.8/9.8 mating screws.
Unit of Measure

Specifications

Material1 N/A Steel 1010/1008
Finish2 N/A Yellow Zinc Dichromate per ASTM-B-633 Type II Fe/Zn (0.0003/8u) with Clear Protective Coating

Thread Size

N/A 1/4-20

Head Height

N/A 0.030 in

Mounting Hole Diameter

N/A 0.390 in

Head Outside Diameter

N/A 0.5 in

Maximum Dimension D

N/A 0.390 in

Thread Call Out

N/A 420

Maximum Dimension Il

N/A 0.380 in

Length

N/A 0.680 in

Restriction of Hazardous Substances Directive Standard

N/A No

Grip Range

N/A 0.165 to 0.260 in

Weight

N/A 16.73 lb

End Features

N/A Open

Industry Standards/Certifications

N/A Unified National Coarse (UNC)

Features and Benefits

Features and Benefits

N/A Maximum Versatility
  • 1 For other material, please contact EFC International.
  • 2 For other finishes, please contact EFC International.
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