1/2" Hex Nut

Listed on the following equipment:
Nautilus Commercial (Core Fitness) - Adjustable Tower - F3AT - Rev. AB
Nautilus Commercial (Core Fitness) - Bicep Curl - S3BC
Nautilus Commercial (Core Fitness) - F2 Smith Machine II - F2SM2
Nautilus Commercial (Core Fitness) - Leg extension - S6LE
Nautilus Commercial (Core Fitness) - Lower Back - S3LB
Nautilus Commercial (Core Fitness) - Lower Back - S5LB
Nautilus Commercial (Core Fitness) - Nitro Pec Fly - S5PF
Nautilus Commercial (Core Fitness) - Pec Fly - S3PF
Nautilus Commercial (Core Fitness) - S3-S5 Pre-2008 Freedom Trainer - Rev. 1/14/2003
Nautilus Commercial (Core Fitness) - T-Bar Row

* Images may not be identical to part.