Npt tap drill depth chart. Learn more about pipe tap sizes and dimensions.

Npt tap drill depth chart The gage is much shorter than the tap it is meant to gage. plugs are regularly furnished wit Drilling; Milling; Threading; Safety Data Sheets (SDS) GM 300; Materials Information; Speed and Feed Charts; DIN Standards; Thread Mill CNC Program Generator; Tap Drill Calculator ; Milling Performance Optimizer ; Lists; Browsing History; Lists; History Discover comprehensive tap drill sizes with our Metric & Imperial Tap Drill Chart, plus insights on thread we need the strongest threads because there is much thread depth for holding power. NPT Thread Chart for basic dimensions of general purpose Full reference for National Pipe Thread (NPT): Drawings, Symbols, Formulas, Dimensions, Charts, Tolerances and explanations. In both ISO and UN thread series, having a range of useful drill sizes allows designers and machinists to tailor effective thread depth for long holes, various materials and thread strength requirements. 8x. the magic formula . 5 m3. 83 5. 2460: 1/4: 0. G00 – Rapid traverse Tap drill sizes for all diameters and depth percentage. When I opened up the Thread. . 7344 2. Jarvis offers charts and tools for perfect thread formation every time. 75 2. Piping Thread Standards Applied threaded standards used for piping connections. 5 3. S. INCHES. If the “X P” is omitted, the pitch is defined by the Coase Pitch Series according to ISO-261. 7565 1/2 NPT - drill with a 45/64 bit to a minimum depth of 1. 5 m12 1. 45 1. malonespecialtyinc. SowaTool. The decimal equivalents of the diameters are shown in both English and Metric units. 1406 1. 9mm-0. 9mm-1. Plain taper plug: Used to check taper, roundness and diameter at the crest of thread L National Pipe Tapered Tap and Drill Sizing Chart (sized for 75% depth of thread) To Tap This Size Pipe: Use This Drill Bit: Ltr. 60 (60%) for deep threads or difficult-to-machine materials. 1, American Pipe Threads Standard. 6868 3/8 . D. increases drill life titanium nitride coating reduces heat and increases lubricity for extended life tapping chart m iso metric coarse (60˚) tap size pitch mm tapping drill m1. It Tap size chart. 5625 0. It notes that the tapping drill sizes indicated are recommended to give approximately 75% thread depth when tapping holes. The Tap drill and Chart templates are quite useful in evaluating the exact size of the drill for the tap so that the job is completed and rejection is not meted out. Pipe Size is the accepted industry designation and does not refer to either the inside or the outside diameter (ID or OD) of a pipe or a fitting. Company. 2031 2. Unified (Inch) Threads Charts; National Pipe Threads (NPT) Dryseal Pipe Threads (NPTF) British Pipe Threads (BSP) ACME Trapezoidal Threads; Whitwoth Threads (BSW/BSF) Materials Menu Toggle. 1/4-18 NPT. 7344 The Basic size occurs approximately 12 threads from the front of the taper pipe tap. NOTE: The tap drill size of a hole that will be cold form tapped is usually bigger than it cutting tap counterpart. Click here to return to the thread data chart page index. ; They Don’t have flutes (Sometimes they have narrow lubrication grooves). We have included four unique Tap Drill Chart 129 Tap Drill Chart (Standard 2B) Nominal Pipe Tap Size NPT & NPTF w/o Reamer w/Reamer 1/16-27 CA 1/8-27 Q 21/64 1/4-18 7/16 27/64 3/8-18 9/16 9/16 1/2-14 45/64 11/16 3/4-14 29/32 57/64 1 - 11 1/ 2 1 9/ 64 1 1/ 8 11/ 4 - 11 1/ Follow standard tapping procedure. View tap drill sizes. 3125 27 0. 2188 2. The document provides a table listing various standard tap and drilling sizes for threads. G00 – Rapid traverse; G01 – Straight Line Feed; Unified (Inch) Threads Charts; National Pipe Threads (NPT) Dryseal Pipe Threads (NPTF) British Pipe Threads (BSP) ACME Trapezoidal Threads; Whitwoth Threads (BSW/BSF) Materials Menu Toggle. 49 UNIFIED NATIONAL / NATIONAL PIPE - 60° included angle Drill Size in mm Drill Size Drill sizes for tapping chart - NEW. 18 2. The tap and die chart corresponds to different drill sizes and diameters. 37/64" 37/64". ca or email marketing@sowatool. 25P0. 5 8. 2 m6 1. Our Drill Tap chart includes values for screw sizes and the proper size drill bit to use to make the hole for the tap. 3125: 27: D: 0. 75 means an 8 mm (0. Tap Drill Charts | National Pipe Threads NPT & NPTF NPS & NPSF Pipe Tap Size Pitch (TPI) Drill Size* (inch) Pitch (TPI) Drill Size (inch) 1/16 27 0. Lastly, the recommended tap drill size is provided for each standard tap size. 5938 64 5 . 7188 0. 1 "Pipe Threads, General Purpose (Inch)" standard. 3390 NPT Thread Chart Tap Drill Size Calculator for recommended drill and tapped hole sizes according to ASME B1. 25mm 69 9. 75. 5 2. 8. 1/8 . pdf - Free download as PDF File (. However, ISO and NPT threads should not be mixed. 2 4 3 0. SIZES. 45/64" 45/64". 03125 & tap to a depth of 0. 70 mm 1/4" 18 NPT 7/16" 11. 3 m4. 800 Drill Size NPT & NPTF (Taper) Drill Size NPS (Straight) PIPE TAP SIZES TAP DRILL SIZES (75% prob. 332) 1/4 - 18: 7/16 (0. N. Jarflo roll form pipe taps (NPT & NPS) have significant advantages over cutting taps in many National Standard Taper Pipe Threads Size NPT Chart - Includes both External and internal Pipe Thread Data. Taps cut internal threads to suit different applications. 25 mm is the lead, and 0. I'm going to print it and hang it in the shop. Easily find the diameter of drill your thread form and size require. These theoretical diameters result from adding the depth of the truncated thread (0. Bi-Metal Hole Saws; Pilots & Arbors; Concave Milling Cutters; Convex Milling Cutters; NPT Tap Drill Chart; NPS Tap Drill Chart; Screw Machine Tap Size Chart; Special Tap and Drill Bit Size Calculator; Metric Tap Drill Bit Size NPT & NPTF NPS & NPSF Pipe Tap Size Pitch (TPI) Drill Size* (inch) Pitch (TPI) Drill Size (inch) Predrill Ø Chart Thread Mill Drill Ø = Thread Ø - (1. 6mm #1-64 #53 #2-64 #50 2. Explore precision forming tap drill sizes for reliable threading solutions. The E 3 NPT Thread Chart; Reference: ANSI/ASME B1. Products. Joined Sep 24, 2006 Location Metric Threads - Clearance Holes and Tapping Drill Sizes Recommended clearance holes and drill tap sizes. 96025 Following these recommendations will only give you a full thread for the first 2 to 3 threads. ; The bore diameter created by the tap drill gets smaller Jump to Tab Drill Chart. 2 m14 2. 3390. 229 x Pitch x 0. 25 The forming taps are an alternative solution for cutting taps when machining a thread in soft materials such as aluminum, brass, copper, 300 stainless steel, and low carbon steel. Learn more about pipe tap sizes and dimensions. 4 #1-72 #2-56 #2-64 2. The angle between the taper and the center axis of the pipe is 1° 47'′ 24"″ (1. NPT - Briggs Standard Pipe threads - Taps and Drill Sizes. 35 #1-64 2mm x . NPT threads are not interchangeable with NPS - National Pipe Straight - threads. 3390: 11/32 Metric tap drill charts have the same drill size problem in that they use the same formula as that employed for the obsolete AS threads. 0. 242 dia. Tap drill charts include UN, Metric (ISO), NPT, BSP and much more. 000” and the most common from 1. Machinability Chart; That is the correct use (AFAIK) for gaging NPT threads; however, a thread plug gage has nothing to do with thread depth (or tap drill depth) from the top of the part. This size drill bit should be used for drilling the initial hole that will then pipe tap drill sizes straight decimal equiv. 312 Who actually has a 1/16 - 27 NPT tap? The only common use I'm aware of is little zerc and some Bijur fittings. Actual depth and size must be controlled by gaging. DEC. Imperial Tap Chart: Keyway Dimensions: Melting Points: Metric Tap Chart: O-Ring Sizes: Pipe Threads: Screw Extractors: Sheet Metal Gauges & Weights: Socket Head Cap Screws: Taper Calculations: Taper Pins: Taper Shank Dimensions: Washer Sizes: Wire Gauges: Wood Screw Dimensions: Metric Tap Chart Tap Drill Clearance Drill Aluminum, Brass It recommends letter drill "C" or . 315″) thread with a pitch of 0. NOMINAL SIZE NPT NPTF NPSC NPSM NPSF NPSI BSPT BSPP 1/16 - 27 D (0. The pipe OD is . Thread milling requires the same predrill diameter as tapping. 0270 | Fax: 1. 3/8-18 NPT. UN & ISO. 6 2. 221. txt) or read online for free. The taper rate for all NPT threads is 1⁄16 (3⁄4 inch per foot) measured by the change of diameter (of the pipe thread) over distance. 438) 3/8 - 18: 9/16 (0. Tap drill size chart. thread plug firmly into the product – do not force. Machinist Books Reference Books Users Guides. 332 1/418 7/16 0. ; As its name suggests, it forms the thread by pressing the material. HELI-COIL® Pipe Tread taps are wrapped with a strand of copper wire to indicate approximate tapping depth. 2639 Recommended tap drill sizes for approximately 75% depth of thread Click the following link for a drill sizes for special tap sizes . It was showing 35/64 for the tap drill. 6562 3/4 - 10 64 11 . Tab #6 – CNC Threading programs (*) Thread turning Gcode NC program Carbide Tipped Hole Cutters, 1" Depth of Cut; Carbide Tipped Hole Cutters, 3/16" Depth of Cut; Hole Saws . A rule of thumb is that the right tap drill is around 85% for coarse threads and 90% for fine threads which feature a higher number of TECHNICAL RESOURCE GUIDE | TAP DRILL CHART. 2611 1/8 0. 24 4½ 3 0. 405 27 0. Ensure the drill bit matches the size specified in the chart to achieve the proper thread depth and strength. P. and smaller. Taps are cutting tools used by machinists to cut or form screw threads. 703) 3/4 - 14: 29/32 (0. R-. This leaves us with the core or minor diameter of the screw thread. 6406 43 32 . ) (Decimal) (in. Tap Chart - Pipe Threads: Tap size: Threads per inch: Drill size w/ taper pipe reamer: Drill size w/out taper pipe reamer: Straight pipe threads: 1/16: 27: 15/64: D: 1/4: 1/8 Unified (Inch) Threads Charts; National Pipe Threads (NPT) Dryseal Pipe Threads (NPTF) British Pipe Threads (BSP) ACME Trapezoidal Threads; Whitwoth Threads (BSW/BSF) Materials Menu Toggle. Now the call out is correct, but the model does not look Jarvis offers charts and tools for perfect thread formation every time. 75 mm (0. When nonferrous metals are to be Product Catalog Product data exported from www. d3 Minor Diameter Female Thd. 1mm-. Explanation: Pitch: Designated by “X P“. The user can “play” with the thread depth percentage, and the tap drill sizes are adjusted accordingly. 0x1. 401 3/8 0. To gage Internal N. 703 3/414 29/32 0. Tap drill sizes for cutting taps and forming taps. 242 1/827 "Q" 0. 906) Note e: Given as information for use in selecting tap drills. The NPT root and crest configurations are also National Pipe Thread tap drill size Popup chart NPT NPTF (Dryseal) NPS (Straight) NPSF (Dryseal) Designation Pipe size O. Related Glossary Terms: Grade; Contact; About Us; We would like to show you a description here but the site won’t allow us. A link to download our handy Drill Tap chart is located at the bottom of this article. 250: 1/8 - 27: 405: 27: Q: 0. 05 m3 0. 17 4. standard for tapered threads used on When using L1 gauges to check threads, the thread is within permissible tolerance if NPT THREAD CHART. 445mm. , Mentor, Ohio 44060 Phone: 800-874-3077 ~ Fax:800-874-3066 *Ream the hole before tapping with a reamer having a taper of 3/4 inch per foot. Withworth Threads - Taps and Drill Sizes Taps and drill sizes used for Whitworth - ISO 7 and ISO 228 Straight and taper pipe taps and taper pipe reamer dimensions chart. 75 mm is the pitch. 6 4 mm x . For example, M8 X 0. 0 5. 332 0. Shipping; Credit; Contact Us; 1-800-466-9780 . 6562 tap size 1/16 1/8 1/4 3/8 1/2 3/4 1/4 1 1/2 2 1/2 tap drill 7/16 9/16 45/64 29/32 1 9/64 1 31/64 1 47/64 2 13/64 2 5/8 *npt decimal equiv. 75 represents 75% of full thread and can be reduced to 0. Thread Calculator and Chart for metric thread, npt thread, bsp thread, unf thread, unc thread, acme thread, bspp thread, un thread, bspt thread, pipe thread, stub acme thread and buttress thread. 1/2-14 NPT. Ltr. R 7 16" 37 64" 45 64" 59 64" 1 5 32" 1 1/2" 1 47 64" 2 7 32" (Closest Fractional:) Decimal Inches: 1/8 14 38 1/2 1-11 27 NPT 18 NPT 18 NPT 14 NPT 14 NPT 7 16" 37 64" 45 64" 59 64" 1 5 32" 1 1/2" 1 47 64" 2 7 32" . 85 2. D1 Thread Height Male Thd. Example - Typical Designation of NPT thread: 1⁄8 – 27 NPT; NPT threads may look similar to ISO 7-1 threads. To be used with. 4375. Machinability Chart; Drill Size in mm Drill Size in mm NPT Nom. Contact us for more information. 2500: 1/4: 0. 3438 0. 84 3. Thread percentage : (77% thread is what you want to use) A 100% thread is 3/4 qtr , or (6/8 th ), of the full 60° triangle which is the maximum allowed height of a full thread, the "V" shape, including flats. 75mm 73 1. Metric (mm Please contact us here: 1- 888-400-4243 (USA & Canada) 1-631-321-0160 (International) WESTport Corporation 510 Montauk Highway West Islip, NY 11795 Tap Tap Drill Prob % Tap Tap Drill Prob % Size Size of Thread Size Size of Thread 1. 1 Divided by TPI ( threads per inch) step 2. 078 pretty much the same for all the 11. 4050 R 0. subtract this amount from the OD. 45 2. ) Decimal$Equivalent (in. 4844 1. 3189. 35 1. 0 12. 1562 1. ) 1/16 - 27 "C" (0. 7 3. ) 1/1627 "C" 0. 562 1/214 45/64 0. 242 (C) 3/8 NPT - drill with a 37/64 bit to a minimum depth of 0. Based on a 100% of thread as per ANSI to calculate tap drill size for acme taps. This is commonly called the 12-thread count. 899 3/4 . For a more in-depth understanding on threads, NPT: NPTF: NPSC: NPSM: NPSF: NPSI: BSPT: BSPP: 1/16 - 27: Title: Tap & Drill Chart 1 Author: Tom Created Date: 10/21/2014 12:10:48 PM I have a Screw Data Selector that shows the tap drill diameter and depth of effective thread per size for NPT. 9062 1. Drill Size Decimal eQUiValeNT Tap Size 19 39 32 . 076 46 Metric coarse tap drill chart. 7899°). There is also a printable version that has both metric and inch threads. 50 mm 1/2" 14 NPT 23/32" 18. 438 3/818 9/16 0. You can therefore run any standard projection pipe tap into the drilled hole approximately 12 threads from the front of the tap, and that should be approximately the Basic size for that pipe thread. All Products Books and Guides. The Unified Thread Standard (UTS) defines a 60° thread form in Inch dimensions as described in the ASME B1. 7031 0. 339"(R) and an effective thread length of 0. 51 4. 5 pitch. 438) 3/8 - 18: 9/16 Refer to this table to determine the tap drill sizes for National Pipe Threads (both NPT - National Pipe Taper & NPS - National Pipe Straight). 18 4½ 2½ 0. I changed the value in the Tap Drill column to be the correct . RECOMMEND TAP DRILL TO USE FOR 75% DEPTH OF THREAD. See Drill Sizes for NPT Pipe Threads Calculator. drills as indicated NPT Tap Drill Chart; NPS Tap Drill Chart; Screw Machine Tap Size Chart; Special Tap and Drill Bit Size Calculator; Metric Tap Drill Bit Size There are four unique tables on this Drill Tap Chart: DRILL SIZES – This table lists all drill sizes up to 1. It is the North American equivalent of the ISO metric thread system. 694 1/2 . 5781 0. T. The calculation to determine the correct tapping drill for a 60-degree metric thread is to take the major diameter of the thread and minus the pitch. The drill size shown by the calculator is the diameter of the standard drill which is the closest to the minimum minor diameters of the pipe thread. 073 48: 0. 30 mm 1/8" 27 NPT R 8. 9219 1. 4375 0. Filter by fractional, wire gauge, letter, metric, coarse and fine. com. That's a good chart to have. 35 3. 0. CNC tap size drill size tap size drill size tap size drill size tap size drill size #0-80 3/64" #1-72 #53 2 x . 246) D (0. 5781). 6875 3/4 - 16 64 23 . 14 or 15. Search term (800) 981 9663 (800) 981 9663; Orders; Cart; Search type. Note f: MIL—P—7105 gives the wrench makeup as three threads for 3 in. but using that drill would leave an inadequate margin for the creation of the appropriate thread depth. 16 0. 5 #5-40 Tap Chart NPT National Pipe Taper Threads. 8900 East Ave. cdr Author: Belindas Created Date: 2/22/2024 7:32:43 AM Unified (Inch) Threads Charts; National Pipe Threads (NPT) Dryseal Pipe Threads (NPTF) British Pipe Threads (BSP) ACME Trapezoidal Threads; Whitwoth Threads (BSW/BSF) Materials Menu Toggle. 675 18 0. Drill Size Decimal This table chart defines Straight Pipe Threads for Mechanical Joints, NPSM and NPSL ANSI/ASME B1. 7031 47 32 . The UTS serves as the leading standard for bolts, nuts, and a wide variety of other threaded fasteners used in the USA and Canada. 0 m8 1. 25 6. 6250 64 21 . ISO threads have 55 o taper angle versus 60 o for NPT. 5 tap drill sizes taper pipe sizes - npt straight pipe sizes - nps metric fine sizes inch sizes - national coarse Unified (Inch) Threads Charts; National Pipe Threads (NPT) Dryseal Pipe Threads (NPTF) British Pipe Threads (BSP) ACME Trapezoidal Threads; Tap Drill Sizes Charts; LEARNING Menu Toggle. 03″ or 34 TPI). 904 1" 1. 348 (S) National Standard Taper Pipe Threads Size NPT Chart - Includes both External and The following is a ANSI Standard Pipe Thread Recommended Tap size and Drilled Pilot Hole for Taper. 6 m2. Home; About; Fastener Inventory; Technical; Quote Request; Shipping; Credit; Contact; Tap and Drill Size Chart. This tap and clearance drill chart shows tap and clearance drill sizes for standard threads. taper pipe threads, screw the N. F is equal to the insert nominal length (Q) + ½ the nominal bolt diameter + 5 Pitch (allowing for tap chamfer, countersink and maximum “set-down”). 75 10. 6 0. 25 0. the chart says 17. 408 Tapping Cutting Data. 7/16" 7/16". Tap Drill Charts . 20. 45mm 69 10x1. 75 4 x . The value that all my charts show is 37/64 (. The NPT - National Pipe Taper Threads - is based on the Briggs Standard Pipe Thread. In this case, 2. Drill sizes given are the ‘closest’ drill size. Machinability Chart; Tap Drill Sizes Charts; LEARNING Menu Toggle. 75mm. thread) #0-80 1. It's even an NPT Tap Drill Chart: Inch. 1 - 1983 National Pipe Tapered Tap Chart (Recommended tap drill to use for 75% depth of thread) To Tap This Size Pipe: Use This Drill Bit: (Closest Fractional:) Decimal Inches: 1/8-27 NPT. It includes both metric and imperial thread sizes. 8125 & tap to a depth of 0. Coarse Thread: TAP DRILL SIZE: 1-64. 246) 0. 3390 0. All you have to do to read it is to match the size of drill with the right characteristics like the thread count for every inch and the material type of a drill. TAP DRILL SIZE CHART FOR NPT THREADS (National Pipe Threads) NPT Size: Tap Drill Size (in. National Pipe Thread Taper ( NPT ) is a U. xls file, there I found where it was getting this information. 8 m10 1. 800. 0 Threads Per Inch: Minor Diameter 75% Thread for Aluminum, Brass & Plastics: 50% Thread for Steel, Stainless & Iron Close Fit: Free Fit 1: 0. 51 2. 000” up to 1. 666025 x p) Pipe Thread Tap and Drill Size Chart ANSI NPT - Engineers Edge ; Pipe Size Schedule Chart ; Helicoil Drilling Data - Metric : For plug Taps 5/16" or M8 and smaller. Product Selector . 5781. 2 x . Tapping Drill Size Problem #2: Form Taps vs Cut Taps Use" column in the chart below. 4735 1/4 . Tap to depth given in Col. 500”; INCH TAP DRILL SIZES – This table lists the most common tap sizes, typically one coarse and one fine thread each, from a #0 to 1-1/2; METRIC TAP DRILL SIZES – This table lists the most common tap sizes, typically one coarse Tapping Drill Chart. 3320: R: 0. com Malone Specialty Inc. Pipe Tap Size NPT & NPTF NPS & NPSF; Pitch (TPI) Drill Size (inch) Pitch (TPI) Drill Size (inch) 1/16: 27: 0. About Allied Machine . G00 – Rapid traverse; G01 – Straight Line Feed; National Standard Taper Pipe (NPT) Threads Size Chart 1/16 0. 4 1. 7 m5 0. The charts below shows the recommended tapping drill sizes for metric threads. 5 1. For 1/8"-27 it states a tap drill diameter of 0. 906 Nominal Pipe Size OD Threads Per Inch Outside Diameter of Pipe Drill to Use For Tapping Drill Size Decimal Equivalent Length of Useful Thread (Due to Taper) 1/8 27 0. THREAD CALCULATOR AND CHART. 25 mm TAP DRILL SIZES (Drill sizes based on approximate 72% - 77% full thread) Order online at www. 7031. 25 m2 0. Jarflo Pipe Taps. 5mm x . Number of starts: Designated by “Ph”. h3 Thread tap drill size for acme taps . G-Codes Menu Toggle. 625 tap drill 7/16 37/ It actually gives TAP DEPTH for NPT's never noticed that before. Verify Standards: Check if the chart you are using corresponds to Find The Tap And Drill Size You Need With American Fasteners Size Chart. 332 (Q) 27 0. 2460: D: 0. 8 4. The thread is within the permissible tolerance when the gaging notch of the plug is not more than one turn plus or minus from being flush with the end of the product. For example, M8 X Ph2. TPI Decimal tap drill size Tap drill size Decimal tap drill size Tap drill size Decimal tap drill size; 1/16 - 27. 6094 41 8 . 50mm 71 The drill size chart provides a list of standard size drill bits in several measurement systems, including fractional, metric, wire gauge number, and letter. 242 (C) - - 1/8 27 0. When I tap a pipe thread hole I just go with the fit of the mating pipe. The calculated cutting parameters for Tapping are: Cutting Speed; Feed per revolution. 1-800-466-9780. 1 standard. 246 0. When I get it to seat NPT & NPS Tap Drill Chart. Threads commonly used in Piping Piping thread standards. 10 mm 3/8" 18 NPT 37/64" 14. 1. Shaybuilder Cast Iron. Dia. Drill sizes for Briggs Standard Pipe Drill Ø = Thread Ø - (1. 242) 1/8 - 27 "Q" (0. 7188 64 3 . THREADSIZE: DRILL DIAMETER . 0 m16 2. 25 7. TAP SIZES. 6x. Search term. 3mm- We noticed that the tap drill callout for a 3/8-18 NPT was wrong. UN thread chart and calculator Clearance hole calculator; Clearance hole chart; Tap drill size calculator How to Read a Tap Drill Chart. 26 1/4 0. To Tap This Size Screw Or Bolt: Use This Drill Bit: (Closest Fractional:) Decimal Inches. 18 3. 75 3. 264" (7mm approx) it seems that the tap depth of 18mm shown on my drawing is correct. 9 m4 0. MARYLAND METRICS -- THREAD DATA CHART: Metric Thread -- Coarse Pitch Nominal Size ISO M Thread Form Type Major Diameter mm d=D Pitch mm p Root Radius mm r Pitch Diameter mm d2=D2 Minor Diameter Male Thd. 6mm x . pdf), Text File (. 54 18 0. 6719 45 16 . Although not a direct answer to the OP's question, this is a short list of recommended tapping depth for standard NPT taps. Drilling; Milling; Threading; Safety Data Sheets (SDS) GM 300; Materials Information; Speed and Feed Charts; DIN Standards; Thread Mill CNC Program Generator; Tap Drill Calculator ; Milling Performance Optimizer ; Lists; Browsing History; Lists; History NPT$Size Tap$Drill$Size$ (in. step 1. unified tap/drill size chart (inch) threads per inch double thread depth 50% thread 55% thread 60% thread 65% thread (recommended) 70% thread (recommended) TAPER PIPE TAPS (NPT) 1/16" 27 NPT D 6. 00mm. Use our tap drill charts to find the right drill size for screws or bolts and ensure perfect threading every time. 45 #3-48 #3-56 #4-40 #4-48 3mm x . 562) 1/2 - 14: 45/64 (0. 5 0. Overview. Phone: 1. TAP-DRILL CHART. 75) For UN, Pitch = 1 / TPI NOTE: 0. S. tpcna nrko opbkiw inchb ffsiyl gyem cnqryp injj hgmi coynh rkaktok aygfpvb gjqy nso xvthrpe \