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 Tool Question
#949338
06/15/09 02:05 PM
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Joined: Jan 2007
Posts: 534
OP
Rock Warrior
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So I was installing some rock rails, spun a threaded insert in a body panel, and decided to use a long stainless steel bolt instead. The problem was that there wasn't quite enough thread on the bolt, so I ran it through a threading die, but I cracked three pieces off the die. Is stainless really that much harder than mild steel? It's not like it was a grade 5 or 8 or something.
97tj, Shaved Ford 9 rear, 4:10's, New 35x12.5 BFG KM2's to test!, Warn x8000i, ARB's, Quick Disco's, Hand Throttle, & it's my DD. 
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 Re: Tool Question
[Re: DBL_DTY97TJ]
#949339
06/15/09 04:55 PM
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Joined: Oct 2003
Posts: 7,768
Web Wheeler
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Stainless is usually very much softer than regular bolt steel. Perhaps the stainless "stuck" to the threader and caused buildup which in turn broke the threader.. There are types of stainless such as D2 which usually aren't used in bolts, that are harder than most bolt steel. But are only used for special circumstances. You may have had access to one of these bolts.. Big Jim <img src="/forums/images/graemlins/pfft.gif" alt="" />
professional bovine relocation specialist
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 Re: Tool Question
[Re: BigJim]
#949340
06/15/09 10:17 PM
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Joined: Jan 2007
Posts: 534
OP
Rock Warrior
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Thanks, I didn't think it should have been an issue. Anyway, I need a new 1/4" - 20 die. <img src="/forums/images/graemlins/evil.gif" alt="" />
97tj, Shaved Ford 9 rear, 4:10's, New 35x12.5 BFG KM2's to test!, Warn x8000i, ARB's, Quick Disco's, Hand Throttle, & it's my DD.
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Re: Tool Question
[Re: BigJim]
#949341
06/16/09 06:52 PM
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Joined: Sep 2005
Posts: 1,087
Body Damage is Cool
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Did you use thread-cutting oil on the die when you were cutting the new threads? Some types of stainless can really gall when put under stress, and if it did that it would "grab" the cutting surfaces of the die and possibly cause them to break. Thread-cutting lubricant prevents that from happening.
1977 CJ-7, fiberglass body, AMC 360 w/ headers, DUI ignition, Edelbrock intake and Holley 4150 carb, TF999, Dana 300, 4.56 gears lockers, York air comp, 4" susp lift, 2" body lift, BFG 35" M-T tires, Megashifter, AGR pump & box, REP8000 winch.
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Re: Tool Question
[Re: BobRowe]
#949342
06/17/09 01:38 AM
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Joined: Jan 2007
Posts: 534
OP
Rock Warrior
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I used WD-40 (liberally), which I've used for cutting oil for years. Is that not so good? I'm thinking it was a POS Harbor Freight die. Should I use a heavier weight oil for smaller dies? I've never had a problem with the pipe threader. For drilling even water will do in a pinch just to keep it cool.
97tj, Shaved Ford 9 rear, 4:10's, New 35x12.5 BFG KM2's to test!, Warn x8000i, ARB's, Quick Disco's, Hand Throttle, & it's my DD.
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Re: Tool Question
[Re: DBL_DTY97TJ]
#949343
06/17/09 02:22 AM
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Joined: Feb 2000
Posts: 6,247
Trail Leader
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I always insist on quality (Greenfield, Stanley or OTC) taps and dies.
And, I have managed to break one or two.
Personally, I use light weight oil rather than WD-40. WD-40 is great for cleanup after.
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