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Author Topic: Need to know 2 bolt sizes  (Read 558 times)

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Offline winkster2005

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Need to know 2 bolt sizes
« on: July 21, 2015, 06:13:25 AM »
Hi everyone, 

     I need to helicoil two bolts. One of the 6mm alternator cover bolts and the 5mm bolt that holds the tach cable in. What I need to know is the thread coin for these two bolts.  Can anyone help?

Thanks in advance!
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Offline evanphi

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Re: Need to know 2 bolt sizes
« Reply #1 on: July 21, 2015, 06:26:14 AM »
thread pitch?

M6 is 1.00
M5 is 0.80
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Offline strynboen

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Re: Need to know 2 bolt sizes
« Reply #2 on: July 21, 2015, 06:27:15 AM »
think they are standart metric
(standart metric normal threds)
m5#0,8,, drill  4,2 mm=5-0,8=4,2
m6#1,0,, drill  5,0 mm=6-1  =5,0


for helicoil,, drill
m5 helicoil  must be 5,20mm,, drill
m6 helicoil  must be 6,30mm,, drill

« Last Edit: July 21, 2015, 06:34:01 AM by strynboen »
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Offline evanphi

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Re: Need to know 2 bolt sizes
« Reply #3 on: July 21, 2015, 06:58:33 AM »
Out of curiosity, if you get a helicoil/timesert kit would they include the proper bit sizes?
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--Evan

1975 CB750K "Rhonda"
Delkevic Stainless 4-1 Header, Cone Engineering 18" Quiet Core Reverse Cone, K&N Filter in Drilled Airbox
K5 Crankcase/Frame, K4 Head and Cylinders, K1 Carbs (42;120;1 Turn)

She's a mix-matched (former) basket case, but she's mine.

CB750 Shop Manual (all years), searchable text PDF
Calculating the correct input circumference for digital speedometers connected to the original speedometer drive

Offline winkster2005

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Re: Need to know 2 bolt sizes
« Reply #4 on: July 21, 2015, 07:39:05 AM »
Ok thanks guys!  And I have seen sets that include everything but it's been a while since I've bought one
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Offline 70CB750

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Re: Need to know 2 bolt sizes
« Reply #5 on: July 21, 2015, 07:56:36 AM »
I bought a set like this one:

http://www.ebay.com/itm/131-pc-Stripped-Thread-Rethread-Helicoil-Repair-Kit-Metric-M5-M6-M8-M10-M12-/171446136721

because it was overall cheaper than just one size kit.
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Offline Don R

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Re: Need to know 2 bolt sizes
« Reply #6 on: July 21, 2015, 08:02:49 AM »
 That kit is less than one size at Carquest! I don't know about the quality but the price is good.
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