Scout test- FAILURE

Discussion in 'Curio & Relics Forum' started by polishshooter, Apr 1, 2006.

  1. polishshooter

    polishshooter Well-Known Member

    Mar 25, 2001
    Indiana
    Thanks X. I wish I would have remembered helicoils BEFORE I drilled out the sight base, oh well. No great loss.

    I remember the guy who built my race engine used them a few times, and we also used them on equipment a lot at the paving company, when the hired help hamfisted bolts and plugs on equipment...which happened fairly regularly, especially the day after payday IF they showed up for work... :cool:

    Hey X? I'm still rather new at this threading tapping business, every tap I bought individually so far (TWO :cool: ) came with the corresponding drill, is there a chart anywhere for proper drill size for which size taps?
     
  2. inplanotx

    inplanotx Active Member

    Jan 28, 2002
    Texas
    Hey Polish, try this one!

    IPT

    http://www.shender4.com/thread_chart.htm
     

  3. Xracer

    Xracer *TFF Admin Staff Mediator*

    Yep Tex.....that oughta do it.

    The big problems with threaded aluminum parts (and steel screws) is vibration and heat. Vibration will loosen the steel/aluminum interface in a hurry......and heat is even worse, since aluminum and steel expand and contract at different rates.

    If you're looking a nice, tight interface of aluminum to steel, as in an aluminum scope mount to a steel reciever, held on with setscrews, helicoil is the only way to go.
     
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