Re: Zinc Phosphateing of Hood Hinges, Catches, etc
 

My bet is...the blue marks designated the sample piece and were marked after being pulled for quality control. Probably not found on every part...just some within the run. Typical in MFG...https://www.yenko.net/ubbthreads/imag...ns/scholar.gif

Are right and left marked? It would not make sense to check every part made...... https://www.yenko.net/ubbthreads/imag...ins/tongue.gif


Steve https://www.yenko.net/ubbthreads/imag...lins/beers.gif

Re: Zinc Phosphateing of Hood Hinges, Catches, etc
 

Both left and right are marked with blue paint on my hinges.

Rick H.