I need a screw

Discussion in 'Components, Accessories and Clothing' started by Vantage, 15 May 2019.

  1. Vantage

    Vantage The dogs chew toy

    All the dome/button headed Allen screws I find online have stupidly shallow heads and are easy to round off.
    The ones I need really are like the one on the right, but I can't seem to source them. This one was fitted to my Dawes Vantage when I bought it.
    Can anyone point me in the right direction please? I really hate the standard socket type bolts.

    IMG_20190515_204750.jpg
     
  2. midlife

    midlife Veteran

    Is it a front mech mounting bolt?
     
  3. OP
    OP
    Vantage

    Vantage The dogs chew toy

    Nope. The bike had loads of those bolts all over. Bottle cages, rack mounts, the lot. All in different sizes for their respective uses.
     
  4. Yellow Saddle

    Yellow Saddle Veteran

    Location:
    Loch side.
    Are your allen keys flat-tipped or ball-tipped. The latter routinely rounds off bolts. Allen keys need to be good quality and replaced as soon as they've slipped a few times in a bolt. If you have a bench grinder, you could just grind them down 'till they're "sharp" again. No allen key below 4mm should have a ball tip. Grind them off.
     
  5. midlife

    midlife Veteran

    Ah! That design is usually in stainless, are they called cap head?
     
  6. OP
    OP
    Vantage

    Vantage The dogs chew toy

    Square ended on the short shaft and ball tip on the long shaft.
    They're not stupidly worn but the edges are softer than when new.
     
  7. OP
    OP
    Vantage

    Vantage The dogs chew toy

    Googling that brought up socket head bolts. No luck.
     
  8. classic33

    classic33 Legendary Member

    What size?
     
  9. OP
    OP
    Vantage

    Vantage The dogs chew toy

    I'm looking to replace the lot. M4, M5 & M6.
     
  10. I like Skol

    I like Skol Hold my beer and watch this....

    Location:
    Ashton-under-Lyne
    Just get a frikkin cap head! It won't slow you down.....
     
    Yellow Saddle and Vantage like this.
  11. OP
    OP
    Vantage

    Vantage The dogs chew toy

    Course they will.
    Dome headed bolts are more aerodynamic!
     
    gbb and I like Skol like this.
  12. Crackle

    Crackle Squatter

    Go into you LBS and scrounge some, that's what I do.
     
  13. OP
    OP
    Vantage

    Vantage The dogs chew toy

    And I've just noticed this!

    IMG_20190515_221129.jpg
    That same chamfering was present right across the allen key range on my multitool.
    What kind of peanut does that! Doh!
    Ground down now.
    Other allen keys also sharpened. We shall see.
     
  14. I like Skol

    I like Skol Hold my beer and watch this....

    Location:
    Ashton-under-Lyne
  15. midlife

    midlife Veteran

    Cap head screw?

    4mm-Titanium-Cap-Head-Screws-Close-Up-800_1024x1024.jpg
     
    Andy in Germany likes this.
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