Overview Reviews Product Description Spaenaur Master Catalog Product Videos Custom Field Package quantity 100 Product Reviews Write a Review Write a Review × Spaenaur Internal Tooth (Flat) Lockwasher Bolt Size #4 (.270-.255" Od X .017" Thk) Carbon Steel Heat Treated Trivalent Zinc Plated Ansi B18.21.1- 671-W09-1Y Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *