TPI Wheel Bolts (10 pcs), Conical Seat, 17mm Hex, M14×1.5, 40mm, Chrome Colour

TPI Wheel Bolts (10 pcs), Conical Seat, 17mm Hex, M14×1.5, 40mm, Chrome Colour
TPI locking wheel bolts are used to securely fasten the wheels of your car. They are made of high-grade hardened steel that exceeds regular OEM standards. This means you can count on their consistent hardness and strength. You will use a standard 17mm wrench for installation. The triple nickel and chrome surface finish protects the bolts from corrosion and ensures a lasting appearance. The conical seating surface guarantees the correct fitment of the wheel.
Key Features of the TPI M14×1.5 40mm Locking Bolts
- Designed for fitting wheels with a 60° conical seating surface
- Made from heat-treated Cr-V or Cr-Mo steel
- Triple nickel and chrome surface finish for corrosion resistance
- Strength and durability verified by salt spray and tensile strength tests
- M14 × 1.5 thread
- Bolt length 40mm
- Wrench size 17mm
Material Strength and Durability
The basis of these wheel bolts is high-grade ASTM 4140 or SCM 440 steel, also known as chrome-vanadium or chrome-molybdenum. Heat hardening of the steel ensures that each bolt has consistent hardness and strength along its entire length. The manufacturer verifies the quality through testing. Corrosion resistance is confirmed by a salt spray test, which simulates demanding conditions such as exposure to road salt. The tensile strength is, in turn, verified by a tensile test, giving you the assurance that the bolts will reliably hold the wheel even under load.
Specifications
Features
Specifications can be changed without notice. Images are for illustrative purposes only.

