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I previously asked this question What type of screw is this, How to remove this screw?

and somebody pointed out it was a t30 torx bit.

Here is my t30. I notice both ends of the key are different as per pic. Is one end or the other designed for the screw in the pic? A torx extension on a ratchet will only have one end why do my keys have two and the non circle star seems to be bigger.

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Thanks

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  • I gather it doesn’t fit . Try this ebay.co.uk/itm/…
    – Tony Stewart EE75
    Commented Sep 11, 2020 at 4:05
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    Those are not Torx wrenches.
    – blacksmith37
    Commented Sep 11, 2020 at 14:34
  • @blacksmith37 are you referring to the item tony strewart has linked or are you referring to the pictures I have posted in my original question? Even if they are not attachable to wrenches provided they have torx ends they should still work? Thanks.
    – James Wilson
    Commented Sep 24, 2020 at 12:41

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Use the end that fits. If it is a security fastener with a “pin” then use the end with the hole, if no pin then either end will do.

But do make sure it is the correct size, ie it has to fit tightly, a smaller one can “touch” the lobes but with too much gap will round out the fastener. Common sense should be applied.

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  • When you say if it is not a security fastener use either end, as I mentioned both ends look different in size and shape slightly. The one with the hole looks smaller. How could either end be ok if they are different in size/shape? I’m assuming your advice to use something that fits refers to using different torx keys atogether rather the two points on the same key? Thanks
    – James Wilson
    Commented Sep 11, 2020 at 12:02
  • The end with the hole is a "security" end, a less-common end design. It is used with fasteners that have a pin sticking up from the middle of the recess in the bolt head; this restricts opening to only those users who have the less-common tool. More significantly: as @Blacksmith points out, these are not Torx tools. These tools' shapes are different. To unscrew Torx fasteners, as on your car, you need to obtain Torx tools.
    – DavidRecallsMonica
    Commented Sep 11, 2020 at 14:46

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