The Dynaco Tube Audio Forum

Dedicated to the restoration and preservation of all original Dynaco tube audio equipment - Customer support for Dynaco VTA tube amp kits, all Tubes4hifi.com products and all Dynakitparts.com products


    Bolt & Screw Sizes

    Share

    mazeeff

    Posts : 116
    Join date : 2014-01-06
    Age : 61
    Location : Grand Rapids, Michigan, USA

    Bolt & Screw Sizes

    Post by mazeeff on Sun Sep 13, 2015 7:54 pm

    Can someone give me the sizes of the following hardware, for a ST-70 chassis?

    1. Bolts to hold down both output and power transformers. Looks like 8-32, but not sure of length or head type.

    2. Screws to attach cage to chassis. Looks like a #6 self drive sheet metal screw. Is this correct?

    Thanks,

    Mike

    evoroadster

    Posts : 39
    Join date : 2015-06-16
    Age : 66
    Location : Honolulu, Hawaii

    Re: Bolt & Screw Sizes

    Post by evoroadster on Sun Sep 13, 2015 8:58 pm

    I just now finished mounting new output and power transformers into a SCA-35 chassis.  I used 8-32 1/2" long machine screws. Don't forget the star washers under the nuts.

    Bob Latino
    Admin

    Posts : 2378
    Join date : 2008-11-26
    Location : Massachusetts

    Re: Bolt & Screw Sizes

    Post by Bob Latino on Sun Sep 13, 2015 9:24 pm

    mazeeff wrote:Can someone give me the sizes of the following hardware, for a ST-70 chassis?

    1. Bolts to hold down both output and power transformers. Looks like 8-32, but not sure of length or head type.

    2. Screws to attach cage to chassis. Looks like a #6 self drive sheet metal screw. Is this correct?

    Thanks,

    Mike

    Yes - The transformer screws are all 8-32 screws. On a stock Dynaco ST-70 chassis the screws that hold on the bottom cover and the tube cage are #6 sheet metal screws. On all the VTA amps those screws are 6-32 stainless steel machine screws. The screws to hold on the tubes sockets and all the front face and rear face gear are 4-40 pan head screws.

    Bob

    mazeeff

    Posts : 116
    Join date : 2014-01-06
    Age : 61
    Location : Grand Rapids, Michigan, USA

    Re: Bolt & Screw Sizes

    Post by mazeeff on Mon Sep 14, 2015 4:25 am

    Thanks for the quick responses.

    Mike

    Sponsored content

    Re: Bolt & Screw Sizes

    Post by Sponsored content Today at 11:13 pm


      Current date/time is Thu Sep 29, 2016 11:13 pm