1970 Body Mount Fastener Hardware Finish
For a 1970, the bolts are plated but I wasn't sure on the finish of the lock washers and thick washer? Thanks for any help.
Bill
Bill
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Bill Hyndman
The 'Sound of Freedom' if not a UH-60 Blackhawk, then it must be a Corvette!
1962 Big Brake Fuelie
1965 Fuelie Convertible
1968 L89 Convertible
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Re: 1970 Body Mount Fastner Hardware Finish
Can anyone help me here with your expertise? Thanks much!Bill Hyndman
The 'Sound of Freedom' if not a UH-60 Blackhawk, then it must be a Corvette!
1962 Big Brake Fuelie
1965 Fuelie Convertible
1968 L89 Convertible
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71 Coupe, 350/270, 4 speed
Mason Dixon Chapter
Chapter Top Flight October 2011Comment
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Re: 1970 Body Mount Fastner Hardware Finish
From the info I have, the lock washer #103228 is phosphate plated.
1973 LS-4 454 coupe owned 25 years
1996 LT-4 CE coupe
Long Trail Ale-currently on tap!Comment
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Re: 1970 Body Mount Fastner Hardware Finish
That 7/16 lock washer is used on the brake caliper mounting, rear shock upper mounting, lower control arm, and a few other spots.
1973 LS-4 454 coupe owned 25 years
1996 LT-4 CE coupe
Long Trail Ale-currently on tap!Comment
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Re: 1970 Body Mount Fastner Hardware Finish
Rich,
In that case I have notes for GM # 103328 lock washer that say the GM engineering drawing notes the following: "Carbon Steel SAE 1060 or Equivalent 38-46 HRC. Finish plain". I think the dark gray color on those washers comes from the heat treatment required for the 38-46 HRC hardness spec. I believe that all GM locks washers with part numbers 103xxx, such as 103319, 103320, 1033321, 103328, 103329, 103330, have a similar finish appearance.
GaryComment
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Re: 1970 Body Mount Fastner Hardware Finish
Hi Bill,
I tried to send you a pm today but was unable because of your 'box' being full.
I'll try again in a couple of days.
Regards,
Alan71 Coupe, 350/270, 4 speed
Mason Dixon Chapter
Chapter Top Flight October 2011Comment
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