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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Knurled Body Insert Nuts are used in punched or drilled holes. During insertion, the knurled body expands 360° to fill the hole, thus providing torque strength and vibration resistance. A flange forms on the backside, without any need for adjustments even in multiple thicknesses of materials. These Insert Nuts also offer
  • Wedged Heads for greater torque capabilities, especially in soft or thin materials and electrical grounding applications
  • Low Profiles
  • Large Diameter Heads, and
  • Open Ends for versatility
Knurled Body Insert Nuts
Unit of Measure
1 2 

Item #

Item Name

Thread Size

Head Outside Diameter

Hole Diameter

06000339-W-XX N/A 0.02 to 0.08 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 6-32 N/A 0.39 in N/A 0.265 in
06700071-W-XX N/A 0.08 to 0.13 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 6-32 N/A 0.39 in N/A 0.265 in
06000301-W-XX N/A 0.02 to 0.08 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 8-32 N/A 0.39 in N/A 0.265 in
06000371-W-XX N/A 0.08 to 0.13 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 8-32 N/A 0.39 in N/A 0.265 in
06000305-W-XX N/A 0.02 to 0.13 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 10-32 N/A 0.415 in N/A 0.296 in
06645004-W-XX N/A 0.13 to 0.225 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 10-32 N/A 0.415 in N/A 0.296 in
06000270-W-XX N/A 0.02 to 0.13 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 10-24 N/A 0.415 in N/A 0.296 in
06000356-W-XX N/A 0.13 to 0.225 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 10-24 N/A 0.415 in N/A 0.296 in
06700091-W-XX N/A 0.027 to 0.165 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 1/4-20 N/A 0.5 in N/A 0.39 in
06600385-W-XX N/A 0.165 to 0.26 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 1/4-20 N/A 0.5 in N/A 0.39 in
06000292-W-XX N/A 0.063 to 0.2 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 1/2-13 N/A 0.865 in N/A 0.687 in
06000310-W-XX N/A 0.2 to 0.35 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 1/2-13 N/A 0.865 in N/A 0.687 in
06700312-W-XX N/A 0.28 to 0.4 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 1/2-13 N/A 0.865 in N/A 0.687 in
06641007-W-XX N/A 0.027 to 0.15 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 5/16-18 N/A 0.685 in N/A 0.531 in
06000351-W-XX N/A 0.15 to 0.312 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 5/16-18 N/A 0.686 in N/A 0.531 in
06000279-W-XX N/A 0.027 to 0.15 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 3/8-16 N/A 0.687 in N/A 0.531 in
06004327-W-XX N/A 0.15 to 0.312 Inch (in) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A 3/8-16 N/A 0.688 in N/A 0.531 in
06648011-W-XX N/A 0.5 to 2 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M4x0.7 N/A 9.91 mm N/A 6.75 mm
06700122-W-XX N/A 2 to 3.3 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M4x0.7 N/A 9.91 mm N/A 6.75 mm
06700124-W-XX N/A 0.5 to 3.3 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M5x0.8 N/A 10.54 mm N/A 7.6 mm
06000316-W-XX N/A 3.3 to 5.7 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M5x0.8 N/A 10.54 mm N/A 7.6 mm
0670007063-W-XX N/A 0.7 to 4.2 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M6 x 1 N/A 12.7 mm N/A 10 mm
0670000488-W-XX N/A 4.2 to 6.6 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M6 x 1 N/A 12.7 mm N/A 10 mm
06000299-W-XX N/A 0.7 to 3.8 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M8 x 1.25 N/A 17.4 mm N/A 13.5 mm
06700262-W-XX N/A 3.8 to 7.9 Millimeter (mm) Open Grip Insert Nut Low-Profile Knurled Body with Wedged Head N/A M8 x 1.25 N/A 17.4 mm N/A 13.5 mm
Unit of Measure
1 2