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    spanner screw removal



    Posts : 147
    Join date : 2011-11-06
    Location : Tucson AZ USA

    spanner screw removal

    Post by daveshel on Sat Feb 28, 2015 7:06 pm

    I just got ahold of an ST-70A, and it has the spanner screws holding the bottom plate on. Is there an easy way to get these out without having to buy a bit - seems the bits are available in several sizes and I'd hate to make the drive to find one then find it's the wrong size. I suppose I could just drill it out.

    Bob Latino

    Posts : 2382
    Join date : 2008-11-26
    Location : Massachusetts

    Re: spanner screw removal

    Post by Bob Latino on Sat Feb 28, 2015 10:09 pm


    You need a pin spanner wrench to get those out .. Check the one on Ebay at the link below ...

    Pin spanner wrench on Ebay ..



    Posts : 147
    Join date : 2011-11-06
    Location : Tucson AZ USA

    Re: spanner screw removal

    Post by daveshel on Sun Mar 01, 2015 2:56 pm

    Thanks, Bob. Kinda pricey for two screws though.


    Posts : 208
    Join date : 2013-02-10

    Re: spanner screw removal

    Post by Maintarget on Sun Mar 01, 2015 8:32 pm

    Its a PITA but you can use two steel dowels, Pins or drill bits and a crescent wrench to remove them IF you have the room to maneuver or just send the 11 bucks and be done with it Laughing

    j beede

    Posts : 318
    Join date : 2011-02-07
    Location : California

    Re: spanner screw removal

    Post by j beede on Tue Mar 03, 2015 4:48 pm

    Do you plan to reuse the screws? If not... I use a Dremel with two carborundum cutting wheels stacked to cut a screwdriver slot. Surround the area with blue tape to avoid nicks in case the cutting wheel breaks or bucks.

    Alternative: Harbor Freight sells a pin wrench for removing watch covers for a couple dollars--not sure it if closes down enough for that screw though. HF also sells snap ring pliers that will work. Again, blue tape to avoid damage when the pliers "de-slot".


    Posts : 722
    Join date : 2009-04-30
    Location : East of the sun and west of the moon

    Re: spanner screw removal

    Post by GP49 on Tue Mar 03, 2015 6:03 pm

    I have been able to improvise. Using steel wire in the correct diameter to fit the holes, I bend a U-shape. I can use pliers to grip the curved part of the "U" so that the ends stick out and can be used to turn the screw.

    I learned this from repairing cameras for a hobby. They sometimes use this kind of screw rather than slotted types, for appearance reasons.

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