BB-UN300 drive side won't thread in (counter-clockwise to tighten)! Driving me nutz. The non-drive side threads just fine (clockwise to tighten). What's happening here? : r/bikewrench
Shimano BB-UN300 Bottom Bracket British Thread, 73-113 mm : Sports & Outdoors - Amazon.com
Shimano BB-UN300 Square Taper Bottom Bracket – The Bikesmiths
Shimano BB-UN300 Bottom Bracket 73 x 122.5mm - Wheat Ridge Cyclery | Colorado's Largest Bike Shop
BB-UN300 drive side won't thread in (counter-clockwise to tighten)! Driving me nutz. The non-drive side threads just fine (clockwise to tighten). What's happening here? : r/bikewrench
Shimano Shimano BB-UN300 Bottom Bracket - English, 68 x 122.5mm Spindle, Square Taper JIS, 47.5mm Chainline - Dynamite Bike Lab