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5/20/2014 6:27:32 PM EDT
Which should I be looking for the 9610 or the carpenter steel?  Aim is selling the 9610 for a great price will it hold out?
5/20/2014 7:26:41 PM EDT
[#1]
The bolt itself is made of 9310.  9310 can be acceptable alternative to the expensive milspec carpenter 158.  C158 is a brand name steel.  It's expensive and you gotta buy it in large lots.  Properly hardened 9310 can be acceptable.  That said AIM is a trustable vendor known for selling quality stuff with decent customer service.  
5/20/2014 9:18:02 PM EDT
[#2]
Personally I look for c158 steel bolts. I've read 9310 is acceptable and does a fine job IF it is properly heat treated. Apparently the heat treating process is much more important with 9310 than c158 though. I'm not 100% sure this is correct but after reading it I just feel more confident with the mil-spec c158 bolts.
5/20/2014 9:55:30 PM EDT
[#3]
Aim has a mp tested c158 bcg for $89 right now,buy that sucker and don't look back.
5/21/2014 11:47:31 AM EDT
[#4]
There are a few alloys which are better for bolts.  9310 CAN be one of them. S7 is another that I have seen recently.  One thing is for sure C158 is spec'd and generally does a fine job in my experience. I have a couple 9310 ARP superbolts that are great too.
5/21/2014 11:55:36 AM EDT
[#5]
Quote History
Quoted:
Aim has a mp tested c158 bcg for $89 right now,buy that sucker and don't look back.
View Quote


This carrier has an investment cast gas key which will bring up its own debate on acceptable metals.
5/21/2014 11:57:03 AM EDT
[#6]

Quote History
Quoted:


There are a few alloys which are better for bolts.  9310 CAN be one of them. S7 is another that I have seen recently.  One thing is for sure C158 is spec'd and generally does a fine job in my experience. I have a couple 9310 ARP superbolts that are great too.
View Quote
Rumor was Spikes S7 prototype bolts had issues in extreme cold.  I haven't seen any real confirmation of the rumor though.



I have no problem using 9310.  I really like my 6.8 superbolts from ARP.



 
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