The 4-way button listed in the Mouser kit, ALPS SKQUAAA010, has been discontinued and is no longer stocked at Mouser. The recommended replacement part is 2.5mm smaller and has no prongs for mounting. The only other place online that I've been able to find the original in the US (Newark seems to be having issues with their website so I can't check there) is onlinecomponents.com and they have a $30 order minimum.
The 4-way button listed in the Mouser kit, ALPS SKQUAAA010, has been discontinued and is no longer stocked at Mouser. The recommended replacement part is 2.5mm smaller and has no prongs for mounting. The only other place online that I've been able to find the original in the US (Newark seems to be having issues with their website so I can't check there) is onlinecomponents.com and they have a $30 order minimum.