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03-14-2016, 12:25 AM
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#1 |
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Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Groovy threads...
Can somebody tell me why the groove is cut down the middle of the threads. I've seen it before and was just curious...
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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03-14-2016, 12:59 AM
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#2 |
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Senior Member
Join Date: Jul 2010
Location: South Dakota
Posts: 4,093
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Re: Groovy threads...
I would assume it would be used as some form of a lock type but not 100% sure. Hopefully someone else will chime in.
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1969 Chevy c20(Miss Hackjob) |
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03-14-2016, 02:53 AM
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#3 |
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Registered User
Join Date: Jan 2015
Location: Los Angeles California
Posts: 927
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Re: Groovy threads...
home made thread chaser
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03-14-2016, 04:57 AM
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#4 | |
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Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Groovy threads...
Quote:
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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03-14-2016, 06:26 AM
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#5 |
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Registered User
 Join Date: Oct 2013
Location: CT.
Posts: 260
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Re: Groovy threads...
I wonder if that groove has locktite (or some other locking type plastic) in it before it is installed?
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03-14-2016, 06:29 AM
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#6 |
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Registered User
Join Date: Oct 2013
Location: CT.
Posts: 260
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Re: Groovy threads...
Sorry treveiger I read your post but it didn't sink in (its early).
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03-14-2016, 06:36 AM
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#7 |
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Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Groovy threads...
Early? no, it's late!! hehe
Come to think of it, when I first came across one of these I thought the threads were chewed up because I could scrape out what was in the groove, albeit not too easily. Probably Locktite as you guys mentioned.
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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03-14-2016, 09:30 AM
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#8 |
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Registered User
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 1,137
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Re: Groovy threads...
The groove holds a plastic strip that acts as a thread locker. the bolts for the PTO covers & the top cover have them on some 465's.
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03-14-2016, 10:09 AM
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#9 |
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Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Groovy threads...
Thanks B.W., appreciate the info.!
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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03-14-2016, 11:17 AM
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#10 |
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Special Order
  
Join Date: Nov 2004
Location: Mt Airy, MD
Posts: 85,852
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Re: Groovy threads...
That's great to learn. Thanks for the contribution.
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"BUILDING A BETTER WAY TO SERVE THE USA"......67/72......"The New Breed" GMC '67 C1500 Wideside Super Custom SWB: 327/M22/3.42 posi.........."The '67" (project) GMC '72 K2500 Wideside Sierra Custom Camper: 350/TH350/4.10 Power-Lok..."The '72" (rolling) Tim "Don't call me a redneck. I'm a rough cut country gentleman" R.I.P. ~ East Side Low Life ~ El Jay ~ 72BLUZ ~ Fasteddie69 ~ Ron586 ~ 67ChevyRedneck ~ Grumpy Old Man ~ |
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03-14-2016, 12:18 PM
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#11 |
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Registered User
Join Date: Aug 2002
Location: California
Posts: 971
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Re: Groovy threads...
I came across a prevailing torque nut at the parts store yesterday and thought the name of it was interesting, but no time to look into it. Of course I had no idea it was related my question when posted here... but what do you know...
The bolt in my picture at the beginning of this thread is a - Prevailing Torque Type Fastener - you can read about them about 1/4 of the way down the page HERE. In brief... Material additive fasteners work by wedging the fastener into close proximity with the mating thread, causing a metal-to-metal drag in the circumferential direction directly opposite to the material locking device. The material used to produce the wedge customarily is an engineered plastic.
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--------------------------------------------------------- I'm not crazy, I'm chosen, there's a difference. ---------------------------- '72 K10 SWB, 350, sm465/np205 ---- ---- |
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03-14-2016, 12:19 PM
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#12 |
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Registered User
Join Date: Aug 2006
Location: Redmond, WA
Posts: 6,332
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Re: Groovy threads...
So to work properly as originally intended, since they no longer have the plastic insert, you'd need new bolts, right? I thought these were metal to metal, like the metal version of a nylock nut.
Thread locker and luck are probably sufficient, I mean in theory, to be "like new".
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1970 GMC Sierra Grande Custom Camper - Built, not Bought 1969 Pontiac 2+2 427/390 4-speed Coupe 1969 Pontiac 2+2 427/390 4-speed Convertible |
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