Overview Reviews Product Description Spaenaur Master Catalog Product Videos Custom Field Package quantity 100 Product Reviews Write a Review Write a Review × Spaenaur Machine Screw Binding Slot Head #4-40 Unc X 3/16" Low Carbon Steel Zinc Plated Ansi B18.6.3-1972 MS-438 Rating * Select Rating 1 star (worst) 2 stars 3 stars (average) 4 stars 5 stars (best) Name Review Subject * Comments *