Overview Reviews Product Description 37013 Retaining Nut for Lock Pin on Challenger lift. 1/2-13NC hex lock nut. We are an authorized Challenger Distributor. Genuine Challenger Parts! Product Videos Custom Field Product Reviews Write a Review Write a Review × Challenger 37013 Challenger Retaining Nut for Lock Pin Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Email * Review Subject * Comments *