Guide to Fastener Sizes . Understanding Standard Size Dimensions. The Size Dimension pertains to diameter of screws, bolts, pins and inner diameter of nuts and washers. You may search for your product based on diameter by selecting a measurement on the Size dropdown. The J.I. Morris Miniature Fastener Division of Swissturn/USA stocks over 10 million screws, nuts, and washers from 0000-160 to 2-56 and Unified Miniature thread sizes from 0.5 UNM to 1.4 UNM. Included in our standard line are screws made to a variety of National Aerospace Standards. 14 rows Your shopping cart is empty. Subtotal: $0.00 Quick Add Cart / Checkout: Quick Add

Online shopping for Industrial Scientific from a great selection of Machine Screws, Socket Head Screws, Self-Tapping Screws, Sheet Metal Screws, Set Screws more at everyday low prices. Steel Pan Head Machine Screw , Black Zinc Plated, Meets ASME B18.6.3, #2 Phillips Drive, #6-32 Thread Size , 3/8 Length, Fully Threaded, Import (Pack of 100) by Small Parts 4.6 out of 5 stars 10 23 rows A #8 screw size is .164 fraction of an inch. The diameters listed in the chart below are in …

The size of a metric screw or bolt is specified as diameter, pitch and length, in millimeters (millimeters is abbreviated mm). For nuts, size will appear as diameter and pitch. There is an exception though—if pitch isn't specified, the fastener is coarse threaded.