# what size axle does a yyf boss have?

**URL:** <https://forums.yoyoexpert.com/t/what-size-axle-does-a-yyf-boss-have/30812>\
**Category:** Yo-Yo Mods and Maintenance\
**Created:** [October 18, 2011, 5:22am UTC](https://forums.yoyoexpert.com/t/what-size-axle-does-a-yyf-boss-have/30812 "2011-10-18T05:22:06Z")\
**Posts on this page:** 4\
**Page:** 1

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**Author:** ![oyoyyoyo](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/oyoyyoyo/32/803_2.png) [@oyoyyoyo](https://forums.yoyoexpert.com/u/oyoyyoyo)\
**Post date:** [October 18, 2011, 5:22am UTC](https://forums.yoyoexpert.com/t/what-size-axle-does-a-yyf-boss-have/30812/1 "2011-10-18T05:22:06Z")

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I stripped the axle in my boss today and I dont know what size I need to buy for it.

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**Author:** ![888alltheway](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/888alltheway/32/798_2.png) [@888alltheway](https://forums.yoyoexpert.com/u/888alltheway)\
**Post date:** [October 18, 2011, 5:35am UTC](https://forums.yoyoexpert.com/t/what-size-axle-does-a-yyf-boss-have/30812/2 "2011-10-18T05:35:51Z")

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Buy the 8mm.

> **[YoYoFactory Axles](https://shop.yoyoexpert.com/products/yoyofactory-yoyo-axle)**
>
> These are replacement axles for your YoYoFactory yo-yos.Flea: Mighty Flea, Big Deal8mm MVP, BOSS, SuperNova LITE, SuperNova, Proton, New SuperStar, Space Cowboy, Horizon, Aviator 2, Too Hot10mm 44, 44 Special, 2010-2012 Superstar, Skyline, DNA,...

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**Author:** ![dynikus](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/dynikus/32/812_2.png) [@dynikus](https://forums.yoyoexpert.com/u/dynikus)\
**Post date:** [October 18, 2011, 5:39am UTC](https://forums.yoyoexpert.com/t/what-size-axle-does-a-yyf-boss-have/30812/3 "2011-10-18T05:39:50Z")

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yyf uses .4x7 set screws.

there’s a list of common axles the companies uses somewhere. just got to a hardware store and try stuff.

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**Author:** ![jhb8426](https://sea1.discourse-cdn.com/flex015/user_avatar/forums.yoyoexpert.com/jhb8426/32/631_2.png) [@jhb8426](https://forums.yoyoexpert.com/u/jhb8426)\
**Post date:** [October 18, 2011, 7:56pm UTC](https://forums.yoyoexpert.com/t/what-size-axle-does-a-yyf-boss-have/30812/4 "2011-10-18T19:56:27Z")

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See this:

[b]List of useful modification and maintenance guides

> > Common Yoyo Axle Sizes [/b]

Link: [Useful modification & maintenance guides -- clean, repair, tune, fix yoyos - Yo-Yo Mods and Maintenance - YoYoExpert](http://yoyoexpert.com/forums/index.php/topic,17792.0.html)