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Author Topic: 67 Firewall Circuit Breaker C06 A1 #9  (Read 1662 times)

big iron

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67 Firewall Circuit Breaker C06 A1 #9
« on: September 11, 2022, 11:24:15 PM »
What size and finish are the screws #9 (3858195) for the firewall circuit breaker?
Bob
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169INDY

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Re: 67 Firewall Circuit Breaker C06 A1 #9
« Reply #1 on: September 12, 2022, 01:15:21 AM »
Here is the AMK Data:
Tapping Screws - Hexwasher Head
Phosphate & Oil
#8 X 3/8 HXWA AB PHOS. 20 pk
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Jim
68 SS/RS L35 Th-400 LOS
69 Pace Car L48 Th-350 LOS
68 Z28 M21 LOS

big iron

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Re: 67 Firewall Circuit Breaker C06 A1 #9
« Reply #2 on: September 13, 2022, 05:32:13 PM »
Jim,
Thanks for the reply.
I wonder why the pilot hole of .125 is specified in AIM for a #8-18 when .136 is now specified?
Is AMK # B-12048 now the accepted replacement for 3858195 as AMK does not offer a direct part # replacement?
Bob
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Petes L48

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Re: 67 Firewall Circuit Breaker C06 A1 #9
« Reply #3 on: September 13, 2022, 06:51:36 PM »
Here's the link to the AMK item on their site.  I've seen 1/8" and up, listed as a pilot hole size for a #8 sheet metal screw. AMK uses their own part number, likely because these fasteners were used on multiple makes of automobiles.

https://www.amkproducts.com/search-result/?ser=3858195
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big iron

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Re: 67 Firewall Circuit Breaker C06 A1 #9
« Reply #4 on: October 17, 2022, 01:23:17 AM »
Looks like the pilot hole increases with the thickness of the metal.
Do all #8-32 hex screws have the same diameter at the base of the threads? If not then that could explain the different pilot hole sizes in the AIM.
Bob
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