Small Parts 1412MTPBZ Steel Pan Head Machine Screw, Black Zinc Plated, Meets ASME B18.6.3, T30 Star Drive, 1/4"-20 Thread Size, 3/4" Length, Fully Threaded, Imported (Pack of 50): Amazon.com: Industrial & Scientific
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What imperial machine screw has a diameter of 4.5mm and a thread pitch of ~1mm? - Home Improvement Stack Exchange
About Machine Screws and Nuts – Sizes and Key Dimensions
Amazon.com: 1/4-20 x 1" Truss Head Machine Screws, Full Thread, Phillips Drive, 304 Stainless Steel 18-8, Bright Finish, Machine Thread, 50 PCS : Industrial & Scientific
Amazon.com: Ruelle Screw Chek'r SAE/ Inch Screw Thread Size Gauge (No. 1 to 5/16) 1/8 Inch Heavy Gauge Steel Screw Checker, Made in USA : Industrial & Scientific
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About Machine Screws and Nuts – Sizes and Key Dimensions
ANSI External Screw Threads Size Tolerances Chart
8-32 x 2" (1/4" to 3" Available) Pan Head Machine Screws, Full Thread, Phillips Drive, 304 Stainless Steel 18-8, 25 PCS: Amazon.com: Industrial & Scientific