Closed End Insertnuts eliminate leakage past the threads from either side of the application.
  • Wedged Head for greater torque capabilities, especially in soft or thin materials & electrical grounding applications.
  • Low Profile
  • Large Diameter Head
  • Knurled Body for use in punched or drilled holes. During insertion, the knurled body expands 360° to fill the hole, providing torque strength and vibration resistance. A flange forms on the backside, without any need for adjustments, even in multiple thicknesses of materials.
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Closed End Insert Nuts

0.02 to 0.08 Inch (in) Grip Closed End Insert Nut Low-Profile Knurled with Wedged Head
Closed End Insert Nuts

0.08 to 0.13 Inch (in) Grip Closed End Insert Nut Low-Profile Knurled with Wedged Head
Closed End Insert Nuts

0.02 to 0.08 Inch (in) Grip Closed End Insert Nut Low-Profile Knurled with Wedged Head
Closed End Insert Nuts

0.02 to 0.08 Inch (in) Grip Closed End Insert Nut Low-Profile Knurled with Wedged Head
Closed End Insert Nuts

0.08 to 0.13 Inch (in) Grip Closed End Insert Nut Low-Profile Knurled with Wedged Head
Description N/A Closed End Insertnuts eliminate leakage past the threads from either side of the application.
  • Wedged Head for greater torque capabilities, especially in soft or thin materials & electrical grounding applications.
  • Low Profile
  • Large Diameter Head
  • Knurled Body for use in punched or drilled holes. During insertion, the knurled body expands 360° to fill the hole, providing torque strength and vibration resistance. A flange forms on the backside, without any need for adjustments, even in multiple thicknesses of materials.
Thread Size N/A 6-32 N/A 6-32 N/A 8-32 N/A 8-32 N/A 8-32
Head Height N/A 0.030 in
Head Outside Diameter N/A 0.39 in
Hole Diameter N/A 0.265 in
Body Features N/A Knurled
Grip Call Out N/A 80 N/A 130 N/A 70 N/A 80 N/A 130
Maximum Grip Size N/A 0.080 in N/A 0.130 in N/A 0.080 in N/A 0.080 in N/A 0.130 in
Minimum Grip Size N/A 0.020 in N/A 0.080 in N/A 0.020 in N/A 0.020 in N/A 0.080 in
Head N/A Large
Material N/A Aluminum 5056 Brass 270/260 Monel 400 Steel 1010/1008
Maximum IATD N/A 0.61 in N/A 0.67 in N/A 0.61 in N/A 0.61 in N/A 0.67 in
Maximum ILB N/A 0.64 in N/A 0.58 in N/A 0.64 in N/A 0.64 in N/A 0.58 in
Dimension LB N/A 0.74 in
Thread Call Out N/A 632 N/A 632 N/A 832 N/A 832 N/A 832
End Features N/A Closed
Industry Standards/Certifications N/A Unified National Coarse (UNC)
Finish N/A
  • Tin-Zinc Trivalent Chromate ROHS compliant
  • Zinc/Yellow Dichromate per ASTM-B-633 Type II Fe/Zn (0.0003/8u) with Clear Protective Coating
  • Yellow Tin Zinc per BPS-TZ-327 (0.0003/8u) with Clear Protective Coating
  • Clear Protective Coating
  • Cadmium per QQP 416 Type I, Class 3 with Clear Protective Coating
  • Tin
Features and Benefits N/A
  • Maximum Torque Strength for soft or thin materials and electrical grounding applications
  • 360º Hole-Filling for torque strength and resistance to vibration
  • Backside Flange forms during installation even in variable thicknesses of material, without adjustment
  • 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 standard rivet nuts
  • Corrosion Resistance Tin/Zinc alloy finish
  • Special Installation Tools available through EFC International can be located at any position on your assembly line, before or after finish.
Note N/A Inserts listed on this page have Closed Ends, as pictured, for versatility.

Grip Range can be affected by parent material density and actual hole size. Therefore, EFC suggests trial installations to determine optimum grip.
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