FastenerThread Pitch and Tapping Drill Guide FOR INFORMATION PURPOSES ONLY ©Fastener Network Holdings Ltd, Unit B, Grazebrook Industrial Park, Peartree Lane, Dudley, 3/4"-16 UNF 16 1,587 17,50 7/8"-14 UNF 14 1,814 20,40 1"-12 UNF 12 2,117 23,25 1 1/8" - 12 UNF 12 2,117 26,50 1.1/4"-12 UNF 12 2,117 29,50 34-16 UNF 2B plug gauge GO&NOGO with long form calibration certificate US$95. Fraction: 3/4. Decimal:0.75. TPI:16. Thread Form: UNF. Ring gauges class of fit: 2A 3A. Plug gauges class of fit:2B 3B. 3/4″-16 UNF ring plug gage in stock, can be sent out same day! RH=right hand LH=left hand both available. Purchase9/16-18UNF-2B-V-DC-MT-DIN2184-1 HSS Tap DIN Zero Tap Series V-DC-MT, UNF DIN 2184-1 from OSG, FA & metal molding parts, industrial tools and consumables. NOTE : Windows 7 users won’t be able to use some latest features of eCatalog/WOS since Microsoft is ending support for Windows 7 on 14 Jan, 2020. Overwire measurements. 3/8 - 16 UNCPossible Thread Classes. External Threads. 1A, 2A, 3A. Internal Threads. 1B, 2B, 3B. 3/8 - 16 UNC 1A (External) * Permisable values for thread Class 1A. * Values are calculated for Length of engagement of 5xPitch. For calculations of different engagement length use the Thread Calculator' 15/8 - 18 UNEF : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more. Internal Threads. 2B, 3B. 1 5/8 - 18 UNEF 2A (External) * Permisable values for thread Class 2A # Description (UNC/UNF/UNEF) National Pipe (NPT) Dryseal Pipe (BPTF) British Pipe (BSP) ACME Nominalthread sizes from 0-80 UNF to ¼-56 UNS Nominal thread sizes from 2 7/8-6 UN to 4-16 UN External Thread / Internal Thread : Nominal Size, TPI, Series: Class: Allowance: Max a Major 2B : 1.8500: 1.8200 : 1.9028: 1.8917: 2.0000: Ext. 2-6 UN: 3A: 0.0000: 2.0000: : 1.8853: 1.8016: ScrewThreads. Thread System. Unified Screw Threads. Constant Pitch Series. 4 UN and 4 UNR. 6 UN and 6 UNR. 8 UN and 8 UNR. 12 UN and 12 UNR. 16 UN and 16 UNR. 34 - 20 20-UN : Basic Thread Dimensions (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more 0.16: Tap Drill Size (75% depth) 0.701: 17.81: 3/4 - 20 20-UN 2B (Internal) * Permisable values for thread Class 2B # Description Value (Inch) VValue (mm) D 1: Minor Diameter: 0.696 - 0.707: Hereare steps to follow in using our tool: Choose which dimensions you want to calculate – metric external thread dimensions, internal thread dimensions, or both. Select the thread pitch of your threads from the drop-down menu. Input the basic major diameter of your threaded fastener. QEKSTH.

3 4 16 unf 2b thread dimensions