These Knurled Inserts for Thicker Panels have tiny knurls under their head, and are designed to be installed into most materials over 0.030in/0.76mm in thickness. Their reduced length makes them ideal for limited clearance applications. They can be installed using lightweight, handheld pneumatic tools that can be located at any position in your assembly sequence. As the insert is installed, the threaded nut portion is drawn into the upper sleeve portion. This 360º swaging action expands the sleeve to firmly hold the insert in position in the hole. They are to be used with Grade 8/Metric 12.9 mating screws.
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AT Type Knurled Blind Threaded Inserts for Thicker Panels

10-24 Thread Size AT Type Knurled Blind Threaded Insert for Thicker Panels
AT Type Knurled Blind Threaded Inserts for Thicker Panels

6-32 Thread Size AT Type Knurled Blind Threaded Insert for Thicker Panels
AT Type Knurled Blind Threaded Inserts for Thicker Panels

4-40 Thread Size AT Type Knurled Blind Threaded Insert for Thicker Panels
AT Type Knurled Blind Threaded Inserts for Thicker Panels

4-40 Thread Size AT Type Knurled Blind Threaded Insert for Thicker Panels
AT Type Knurled Blind Threaded Inserts for Thicker Panels

4-40 Thread Size AT Type Knurled Blind Threaded Insert for Thicker Panels
Description N/A These Knurled Inserts for Thicker Panels have tiny knurls under their head, and are designed to be installed into most materials over 0.030in/0.76mm in thickness. Their reduced length makes them ideal for limited clearance applications. They can be installed using lightweight, handheld pneumatic tools that can be located at any position in your assembly sequence. As the insert is installed, the threaded nut portion is drawn into the upper sleeve portion. This 360º swaging action expands the sleeve to firmly hold the insert in position in the hole. They are to be used with Grade 8/Metric 12.9 mating screws.
Thread Size N/A 10-24 N/A 6-32 N/A 4-40 N/A 4-40 N/A 4-40
Finish N/A N/A N/A Cadmium N/A Cadmium with Clear Coat N/A Plain Zinc No Clear Coat
Mounting Hole Diameter N/A 0.400 in
Head Outside Diameter N/A 0.306 in N/A 0.240 in N/A 0.211 in N/A 0.211 in N/A 0.211 in
Maximum Dimension D N/A 0.280 in N/A 0.218 in N/A 0.187 in N/A 0.187 in N/A 0.187 in
Body Features N/A 360º Swaging
End Features N/A Open
Head Features N/A Knurl
Length N/A 0.370 in
Reference LB N/A 0.685 in N/A 0.675 in N/A 0.660 in N/A 0.660 in N/A 0.660 in
Maximum IATD N/A 0.385 in N/A 0.410 in N/A 0.395 in N/A 0.395 in N/A 0.395 in
Maximum Dimension Il N/A 0.205 in
Length LB N/A 0.520 in N/A 0.505 in N/A 0.495 in N/A 0.495 in N/A 0.495 in
Material N/A Aluminum 6061-T6 N/A Steel C1010 Steel C1110 N/A Steel C1010 Steel C1110 N/A Brass 360+ Brass 464 N/A Aluminum 6061-T6
Thread Call Out N/A 1024 N/A 632 N/A 440 N/A 440 N/A 440
Weight N/A
Restriction of Hazardous Substances Directive Standard N/A Yes N/A No N/A No N/A No N/A Yes
Industry Standards/Certifications N/A Unified National Coarse (UNC)
Features and Benefits N/A
  • Thick Panel Applications
  • Limited Clearance Applications - reduced overall length
  • Reduce Inventory- each of these inserts can be used in almost any thickness
  • Varying Thickness Materials without adjustment
  • Quality Installation - Locate special spin/spin torque stall tools anywhere in assembly, even in variable thickness materials, before or after finish.
Additional Information N/A These inserts are available with standard open ends, or closed ends to prevent leakage past the threads from either side of the application.
Note N/A Special Installation tools are available through EFC International. Design options without knurls under the head are also available directly through EFC. Special orders are subject to minimum order requirements.
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