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Dorman 878-412 Hex Lock Nut with Nylon Insert Class Height - M12-1.25 8 12mm

Part of: Dorman Hex Lock Nut with Nylon Insert Class Height

Other options in this family: Dorman 878-310 Dorman 433-010 Dorman 433-016BX Dorman 784777 Dorman 799076

Manufacturer

Picture for manufacturer Dorman

Part Number

878-412
11 reviews
Sale Price

$8.19

In Stock (7)

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Usually delivered within 2 days

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Show details for Dorman 878-412 Hex Lock Nut with Nylon Insert Class Height - M12-1.25 8 12mm

Wheels and Tires sold separately

Dorman 878-412 Hex Lock Nut with Nylon Insert Class Height - M12-1.25 8 12mm — image 1
Product Details

The Dorman 878-412 is a metric hex lock nut featuring a nylon insert ring designed to prevent loosening due to vibration. This Class 8 fastener provides high-strength holding power for critical automotive, industrial, and mechanical applications.

Key Specifications:

  • Thread size: M12 x 1.25mm metric
  • Height: 12mm
  • Strength grade: Class 8 (equivalent to SAE Grade 5)
  • Nylon insert ring provides self-locking action
  • Hex design for standard wrench or socket installation

The nylon insert creates friction against the bolt threads, resisting loosening from vibration and torque cycling. Class 8 rating ensures reliable performance in demanding applications requiring strong, secure fastening. Ideal for suspension components, engine mounts, chassis hardware, and other critical assemblies where fastener security is essential.

Products specifications

Feature - Benefit 1

Available in many different styles including hex nuts, flanged nuts, square nuts, wing nuts, and more

Feature - Benefit 2

Available in a large variety of sizes, thread pitches, and quantities

Feature - Benefit 3

Prevailing torque lock nuts and other types available for increased durability against high-heat conditions

Feature - Benefit 4

Also suitable for a broad variety of household, industrial and commercial uses

Metric Or SAE

Metric

Thread Size

M12-1.25

Material

Steel

Thread Type

Extra Fine

SAE or Metric

Metric

Package Contents

4 Lock Nuts

Callout Size

M12-1.25

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