Whats the Torque spec on 6-48 base screws???

Discussion in 'Gunsmithing' started by Strip Poker 388, Jan 13, 2012.

  1. Strip Poker 388

    Strip Poker 388 Active Member

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    Nov 18, 2010
    I just received a NightForce scope base/rail 1913picatinny for my New Rem 700.I'm trying to sight it in tomorrow.It didn't come with destructions:rolleyes: and Nightforce is closed ,the place were I bought it didn't know and guessed it to be 25-30inchpds,Everybody else is at the shotshow.I searched and googled it and cant find anything concrete.I looking for more than a guess ,Yea most people tell me just to hand tighten it w/ blue loc.Ive got the TQ wrench ,Why not do it right the first time.

    I Figured someone here in this section prob knows the spec and why there is a spec.

    The NF rings I have came with paper work/specs,25inch. They are larger (?8-40) screws than the 6-48 base screws,So I guessing that 25-30 would stretch the shet out of them or twist them off. I saw one post that said 15inch for the rail/base screws,that the sort 2 go in the front ,as to not protrude into the bolt lug area.

    Any help with this would be greatly appreciated!!!

    Thanks


    Newbie
    Rob:D
     
    Last edited: Jan 13, 2012
  2. Greyfox

    Greyfox Well-Known Member

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    25-30 inch pounds is right. I do mine at 30 inch pounds and use anti seize compound. Never had one loosen, never had one strip or break when I wanted to remove them.
     

  3. Strip Poker 388

    Strip Poker 388 Active Member

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    Greyfox thanks for the reply,I hate to be wrong.I know the ring cap screws are a larger size that they say 25,Ijust cant see the same TQ on a smaller screw,

    This chart is closer to the 25-30in
    6 - 32 .00909 818 654 - 982 15 - 20
    on a 6-32 says 15-20inchpds
    http://www.pencomsf.com/pdf/tech_info.pdf




    these are low

    Bolt and Screw Torque Specs - The Thelen Channel

    Federal Screw Products Inc. - Torque Chart

    Screw Torque

    found this
    Torque specs? - THR
    6-48 Base Screws @ 22 inch/lbs
    8-40 Base Screws @ 28 inch/lbs
    8-40 Ring Screws @ 28 inch/lbs
    Ring windage screws @ 45 inch/lbs

    I know on my race car bolts like ARP they have different TQ #'s w/ 30w oil over Molly.Also on different grades
     
  4. Greyfox

    Greyfox Well-Known Member

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    3,706
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    Jan 21, 2008
    The Wheeler torque wrench kit lists:
    Base Screws. 30 in lbs
    Windage Screws 30-40 in lbs
    Ring Screw aluminum rings 10-15 in lbs
    Ring Screw steel rings 15-20 in lbs

    Stocks

    Wood, fiberglass, synthetic w/o bedding pillars 40 in lbs
    ". ". " With bedding pillars 65in lbs
     
  5. shortgrass

    shortgrass Well-Known Member

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    Specs from the back of the Leupold package; 6-48,, 28 Inch pounds
     
    Last edited: Jan 14, 2012
  6. J E Custom

    J E Custom Well-Known Member

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    Do a search using= Torque Recommendations and you should find all the torque values you want.

    J E CUSTOM
     
  7. Strip Poker 388

    Strip Poker 388 Active Member

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    Hey guys thanks for the replies,It looks like 28 is the most common torque value on the base screws.



    I found on Seekins site he recomends 15 inch lbs
    FAQ -

    15 here also
    Is a wheeler fat tool really needed for mounting scope? - TheFiringLine Forums

    Ken Farrell recomemnds for his base
    Free Rifle and Pistol Targets
    Suggested tightening torque for front screw: 20-25 in/lbs.
    Suggested tightening torque for all other screws: 20-30 in/lbs.

    this post copied from the NRA
    says diff ones
    Wheeler torque screwdriver - AR15 Armory.com

     
  8. Strip Poker 388

    Strip Poker 388 Active Member

    Messages:
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    J E Custom thanks for the tip,Rewording my search made a diff.I appreciate youalls input,I just started shooting about 1 year ago.Trying to learn all this and do it right.

    Rob:D


    This from Brownell's,
    makes since if theres diff grades of the screws/fasteners.I would assume that most are equivalent to the grade 8,machine screw?
    GunTech : Torque Specifications for Gunsmiths - World's Largest Supplier of Firearm Accessories, Gun Parts and Gunsmithing Tools - BROWNELLS

    here's Wheelers recommendation
    that might be bacause the ajustments are only in 10inch steps?
    30 inch-lbs

    Wheeler® Engineering FAT Wrench™ (FAQ/Tips)


    just info/Seekins
    http://www.teamblaster.net/reviews/SeekinsPrecisionRingsBases.pdf







    .