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5/16"-18 Grade C (USS) Ultra-Lock Nut - 50 Pack

5/16"-18 Grade C (USS) Ultra-Lock Nut

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Package Quantity: 50

Package Weight: 0.5 lbs

Item: 344805

To complete your assembly check out our High Head Grade 8 Cap Screws.

  • Made in the U.S.A. from medium carbon steel and heat treated to meet Grade 8 performance standards of Industrial Fastener Institute.
  • Developed to meet the exacting specifications of Automotive Fastener Engineering Specialists.
  • All steel grade C nut offers a proven, predictable torque-tension relationship in critical, high strength applications with Grade 8 bolts.
  • Six dots at 60° intervals on the crown of the nut identify these as a grade C prevailing torque nut.
  • Three point top thread deflections (at 120° intervals in the crown of the nut), downward and inward is used to produce positive repeated prevailing torque, meaning they are reusable even when power driven.
  • Cadmium and wax finish.
  • Immersed in industrial wax and baked dry for reduced application torque of up to 50% of standard "dry" torque values. Failure to lower torque will result in thread stripping or bolt yield.

Brand: Kimball Midwest Approved Vendor
Color: Silver
Diameter: 5/16"
Finish: Cadmium Plated, Wax
Grade: 8
Height: 17/64"
Material: Carbon Steel
Measurement Type: USS
Subcategory: Grade C Ultra-Lock Nut
Thickness: 17/64"
Thread Pitch: 18
Thread Size: 5/16"-18
Thread Type: Coarse
Width Across Flats: 1/2"


WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

To complete your assembly check out our High Head Grade 8 Cap Screws.

  • Made in the U.S.A. from medium carbon steel and heat treated to meet Grade 8 performance standards of Industrial Fastener Institute.
  • Developed to meet the exacting specifications of Automotive Fastener Engineering Specialists.
  • All steel grade C nut offers a proven, predictable torque-tension relationship in critical, high strength applications with Grade 8 bolts.
  • Six dots at 60° intervals on the crown of the nut identify these as a grade C prevailing torque nut.
  • Three point top thread deflections (at 120° intervals in the crown of the nut), downward and inward is used to produce positive repeated prevailing torque, meaning they are reusable even when power driven.
  • Cadmium and wax finish.
  • Immersed in industrial wax and baked dry for reduced application torque of up to 50% of standard "dry" torque values. Failure to lower torque will result in thread stripping or bolt yield.

Brand: Kimball Midwest Approved Vendor
Color: Silver
Diameter: 5/16"
Finish: Cadmium Plated, Wax
Grade: 8
Height: 17/64"
Material: Carbon Steel
Measurement Type: USS
Subcategory: Grade C Ultra-Lock Nut
Thickness: 17/64"
Thread Pitch: 18
Thread Size: 5/16"-18
Thread Type: Coarse
Width Across Flats: 1/2"


WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov.

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