Transcription of Technical data - krasco.com
1 03/06/2010 3-74 - thread StandardsThe most frequently used thread standard is the metric ISO thread . However, there are other thread standards as well. These are either based on foreign standards or are used for special applications. in the medical technology, in aeronautical engineering or most common threads are:t *40 5 ISFBE NFUSJD t 1 JQF 5 ISFBE t ,OVDLMF 5 ISFBEt 8 IJUXPSUI 5 ISFBE t 5 SBQF[PJEBM 5 ISFBE t #VUUSFTT 5 ISFBEThe thread abbreviation includes the thread code letter and the nominal thread diameter or the thread size. Additional values for pitch or TPI, tolerance, multi-lead, taper and left-handedness are added. Often threads that are according to DIN Standard have the major DIN number put in front of the thread of screws the major diameter for screws is determined by the thread minor diameter by the groove of the pitch diameter is the distance of two opposite %anks or the distance of the center line of the pro& Speci!]
2 CationsAbbreviationCountryThread Angle DescriptionISO60 International Organization for StandardizationNCUSA60 National CoarseUNCUSA60 Uni&ed National CoarseNFUSA60 National FineUNFUSA60 Uni&ed National FineUNEFUSA60 Uni&ed National Extra FineUNUSA60 Uni&ed National 8-, 12- and 16 pitch SeriesUNSUSA60 Special Threads of American National FormNPTUSA60 National Taper Pipe 1:16 NPTFUSA60 National Taper Pipe Dryseal 1:16 NPSUSA60 National Standard Straight PipeNPSMUSA60 National Standard Straight Pipe for free &tting mechanicalNPSFUSA60 National Standard Internal Straight Pipe DrysealBSWGB55 British Standard Withworth CoarseBSFGB55 British Standard FineBSPGB55 British Strandard PipeBSPTGB55 British Standard Pipe TaperBAGB47 British Standard AssociationWhitworth Tapered Pipe thread DIN 2999 _ BSPT (British Standard Tapered Pipe)Whitworth Pipe thread for pipes and &ttings.
3 Parallel female thread and tapered male thread (taper 1 : 16). An appropriate sealing compound can be used in the thread to ensure a leak-proof Speci!cationsMale ThreadDiameterFemale ThreadDiameterPipe MinorDiameter mmPipe MajorDiameter mmTappingDrill Size mmTPIP itchmmR 1/16 Rp 1/16 37,7236,561280,907R 1/8 Rp 1/8 69,7288,566280,907R 1/4 Rp 1/4 813,15711,445191,337R 3/8 Rp 3/8 1016,66214,950191,337R 1/2 Rp 1/2 1520,99518,631141,814R 3/4 Rp 3/4 2026,44124,117141,814R 1 Rp 1 2533,24930,291112,309R 1 1/4 Rp 1 1/4 3241,91038,952112,309R 1 1/2 Rp 1 1/2 4047,80344,845112,309R 2 Rp 2 5059,61456,656112,309R 2 1/2 Rp 2 1/2 6575,18472,226112,309R 3 Rp 3 8087,88484,926112,309R 4 R 4 100113,030110,072112,309R 5 Rp 5 125138,430135,472112,309R 6 Rp 6 150163,830160,872112,309 Technical data03/06 - 3-75 Whitworth Pipe thread DIN ISO 228 BSP (British Standard Pipe)
4 British Standard Pipe thread , with sealant compound(parallel, cylindrical), external = GThread Speci!cationsNominalDiameterMajorDiamete rMinor DiamterNut mmTappingDrill SizeTPIP itchmmG 1/8 9,738,858,80280,907G 1/4 13,1611,8911,80191,337G 3/8 16,6615,3915,25191,337G 1/2 20,9519,1719,00141,814G 5/8 22,9121,1321,00141,814G 3/4 26,4424,6624,50141,814G 7/8 30,2028,4228,25141,814G 1 33,2530,9330,75112,309G 1 1/8 37,9035,5835,30112,309G 1 1/4 41,9139,5939,25112,309G 1 3/8 44,3242,0041,70112,309G 1 1/2 47,8045,4845,25112,309G 1 3/4 53,7451,4351,10112,309G 2 59,6157,2957,00112,309G 2 1/4 65,7163,3963,10112,309G 2 1/2 75,1872,8672,60112,309G 2 3/4 81,5379,2178,90112,309G 3 87,8885,5685,30112,309G 3 1/4 93,9891,6691,50112,309G 3 1/2 100,3398,0197,70112,309G 3 3/4 106,68104,30104,00112,309G 4 113,03110,71110,40112.
5 309 Technical dataMold Cooling03/06/2010 3-76 - dataUNEF thread ANSI - Uni&ed Extra Fine thread , which is used for special purposesThread Speci!cationsNominalDiameterMajorDiamete r InchMajorDiameter mmTappingDrill Size mmTPIP itchmmN 12 - 32 UNEF0,2165,4864,80320,7941/4 - 32 UNEF0,2506,3505,70320,7945/16 - 32 UNEF0,3137,9387,25320,7943/8 - 32 UNEF0,3759,5258,85320,7947/16 - 28 UNEF0,43811,11210,35280,9071/2 - 28 UNEF0,50012,70011,80280,9079/16 - 24 UNEF0,56314,28813,40241,0585/8 - 24 UNEF0,62515,87515,00241,05811/16 - 24 UNEF0,68817,46216,60241,0583/4 - 20 UNEF0,75019,05018,00201,27013/16 - 20 UNEF0,81320,63819,60201,2707/8 - 20 UNEF0,87522,22521,15201,27015/16 - 20 UNEF0,93823,81222,70201,2701 - 20 UNEF1,00025,40024,30201,2701 1/16 - 18 UNEF1,06326,98825,80181,4111 1/8 - 18 UNEF1,12528,57527,35181,4111 1/4 - 18 UNEF1,25031,75030,55181.
6 4111 5/16 - 18 UNEF1,31333,33832,10181,4111 3/8 - 18 UNEF1,37534,92533,70181,4111 7/16 - 18 UNEF1,43836,51235,30181,4111 1/2 - 18 UNEF1,50038,10036,90181,4111 9/16 - 18 UNEF1,56339,68838,55181,4111 5/8 - 18 UNEF1,62541,27540,10181,4111 11/16 - 18 UNEF1,68842,86241,60181,411 ISO Metric Coarse thread DIN 13 thread Speci!cationsNominal Diameter MPitchmmTapping Drill Size mm1,00,250,751,10,250,851,20,250,951,40, 301,101,60,351,251,80,351,452,00,401,602 ,20,451,752,50,452,053,00,502,503,50,602 ,904,00,703,304,50,753,705,00,804,206,01 ,005,007,01,006,008,01,256,80 Nominal Diameter MPitchmmTapping Drill Size mm9,01,257,8010,01,508,5011,01,509,5012, 01,7510,2014,002,0012,0016,002,0014,0018 ,002,5015,5020,002,5017,5022,002,5019,50 24,003,0021,0027,003,0024,0030,003,5026, 5033,003,5029,5036,004,0032,0039,004,003 5,0042,004,5037,5045,004,5040,50 Nominal Diameter MPitchmmTapping Drill Size mm48,005,0043,0052,005,0047,0056,005,505 0,5060,005,5054,5064,006,0058,0068,006,0 062,00
