Multi-Threaded Self-Retaining U-Nuts, also known as Tapped Barrel U-Nuts, are primarily used in the automotive industry where extra strength is required. The strength of the tapped barrel u-nut is equal to the machine screw used. It allows single-wrench tightening of the thread assembly. In addition, some multi-threaded u-nuts are available in Free Spin or Prevailing Torque designs. This page displays Metric Thread X Pitch Sizes M4 x 0.70 - M4.2 x 1.69 for various panel thicknesses and an assortment of specifications to meet your application needs.
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Multi-Threaded Self-Retaining U-Nuts

0.60 to 30.80 Millimeter (mm) Panel Thickness Phosphate and Oil Multi-Threaded Self-Retaining U-Nut
Multi-Threaded Self-Retaining U-Nuts

0.60 to 30.80 Millimeter (mm) Panel Thickness Phosphate and Oil Multi-Threaded Self-Retaining U-Nut
Multi-Threaded Self-Retaining U-Nuts

0.60 to 30.80 Millimeter (mm) Panel Thickness Phosphate and Oil Multi-Threaded Self-Retaining U-Nut
Multi-Threaded Self-Retaining U-Nuts

0.60 to 30.80 Millimeter (mm) Panel Thickness Phosphate and Dry Oil Dry-to-Touch Multi-Threaded Self-Retaining U-Nut
Multi-Threaded Self-Retaining U-Nuts

2.00 to 3.00 Millimeter (mm) Panel Thickness E-Coat/SEAL Coat Multi-Threaded Self-Retaining U-Nut
Description N/A Multi-Threaded Self-Retaining U-Nuts, also known as Tapped Barrel U-Nuts, are primarily used in the automotive industry where extra strength is required. The strength of the tapped barrel u-nut is equal to the machine screw used. It allows single-wrench tightening of the thread assembly. In addition, some multi-threaded u-nuts are available in Free Spin or Prevailing Torque designs. This page displays Metric Thread X Pitch Sizes M4 x 0.70 - M4.2 x 1.69 for various panel thicknesses and an assortment of specifications to meet your application needs.
Weight N/A
Material N/A Spring Steel
Thread Size N/A M4 N/A M4 N/A M4 N/A M4 N/A M4.2
Panel Thickness N/A 0.60 to 30.80 mm N/A 0.60 to 30.80 mm N/A 0.60 to 30.80 mm N/A 0.60 to 30.80 mm N/A 2.00 to 3.00 mm
Finish N/A Phosphate and Oil N/A Phosphate and Oil N/A Phosphate and Oil N/A Phosphate and Dry Oil Dry-to-Touch N/A E-Coat/SEAL Coat
Throat Depth N/A N/A 14 mm N/A 10 mm N/A 10 mm N/A 7.6 mm
Prevailing Torque N/A N/A N/A N/A N/A Yes
Fold Width N/A N/A 12.5 mm N/A 12.5 mm N/A 12.5 mm N/A 12.5 mm
Overall Length N/A N/A 21 mm N/A 17 mm N/A 17 mm N/A 16.9 mm
Overall Width N/A N/A N/A N/A 10.5 mm N/A
Pitch Size N/A N/A 0.70 in N/A 0.70 in N/A 0.70 in N/A 1.41 in
Original Equipment Manufacturer (OEM) Reference N/A N/A 11500655 - W520810-S2 / N623340 N/A 11500654 N/A (B) is approximate N/A W710829-S424
Features and Benefits N/A
  • Savings - Reduce labor, weight and cost of your applications
  • Performance - These will out-perform Weld-Nuts
  • Anti-Wrenching - No fear of cross threading or stripping
  • Prevailing Torque Locking Feature - Offered as an option
Additional Information N/A Phos & Oil; Aluminum Organic (Silver & Grey); Phos/Zinc/Organic Coating; Phos Coat with Electrodeposited Black Organic (E Coat) Coating with Oil.
Note N/A A wide selection of additional finishes is available upon request through EFC International. Dimensions labeled A, B, C, and/or D on the dimensions diagram may be approximate. Please consult with an EFC sales engineer is you have other requirements for your application.
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