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.
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M8 Multi-Threaded Self-Retaining U-Nuts

9.0 Millimeter (mm) Throat Depth M8 Multi-Threaded Self-Retaining U-Nut
M8 Multi-Threaded Self-Retaining U-Nuts

13.0 Millimeter (mm) Throat Depth M8 Multi-Threaded Self-Retaining U-Nut
M8 Multi-Threaded Self-Retaining U-Nuts

U-NUT W/PREVAILING TORQUE M8 X 1.25
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. 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. 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
Thread Size N/A M8 N/A M8 N/A M8 X 1.25 6H
Panel Thickness N/A 0.80 to 4.00 mm
Finish N/A Phosphorus and Oil; Aluminum Organic (Silver and Gray); Phos/Zinc/Organic Coating; Phos Coat with Electrodeposited Black Organic (E Coat) Coating with Oil. N/A Phosphorus and Oil; Aluminum Organic (Silver and Gray); Phos/Zinc/Organic Coating; Phos Coat with Electrodeposited Black Organic (E Coat) Coating with Oil. N/A METALLIC BASE COAT + SILVER METALLIC TOPCOAT
Note for Finish N/A A wide selection of additional finishes is available upon request through EFC International. N/A A wide selection of additional finishes is available upon request through EFC International. N/A 4004
Throat Depth N/A 9.0 mm N/A 13.0 mm N/A 8.0 mm
Prevailing Torque N/A No N/A Yes N/A Yes
Fold Width N/A 14.7 mm N/A N/A 14.2 mm
Overall Length N/A 32.00 mm N/A 24.89 mm N/A 25.0 mm
Overall Width N/A 17.5 mm N/A 17.02 mm N/A 17.0 mm
Pitch Size N/A 1.25 in
Material N/A Spring Steel N/A Spring Steel N/A 1050-1065 STEEL PER SAE J403
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
 		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
 		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
Note N/A 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. N/A 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. N/A
Original Equipment Manufacturer (OEM) Reference N/A N/A N/A Ford: W712349-S439
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