Thread types

We also stock threading tools for many other unusual and rare thread types - or we can produce them at short delivery time - e.g. for

ACamera thread, flank angle 60°, DIN 4503, see REBELL catalog page 17.8
ACMEAmerican Trapezoidal Thread Form ACME, flank angle 29°,
ANSI B 1.5 – 1977 (z.B. 3/4 – 6 ACME); ACME-C, centralizing, ACME-G,
for general purpose
AEROAero-Thread for aircraft construction, patented for thread inserts,
Amerikanisches, flank angle 60° (e.g. 0.5000-12 AERO)
AMOAmerican microscope lens thread, flank angle 55°, ANSI B 1.11 - 1978 (e.g. 0.800-36 AMO)
ANArmy Navy Thread, American cylindrical pipe thread of the US armed forces, MS33656, SAE-AS 4395 (e.g. -8AN, corresponds to ¾-16 SAE)
ANPTAeronautical National Taper Pipe Threads, taper 1:16, for army, fleet and aviation, flank angle 60°, MIL-P-7105 (e.g. ANPT 1/4-18)
ANSIAmerican National Standards Institute - Responsible national institute in the USA for the standardization of industrial processes. (comparable with the German Institute for Standardization DIN)
APIAmerican Petroleum Institute Threads, cylindrical and tapered thread for the petroleum industry (mostly with additional letters like TBG, CSG, LP, REG ROTARY etc.), API Std 5 B - 1979 (e.g. 1" API-LP) 
ARTFrench, asymmetrical trapezoidal thread (artillery shape), flank angle 45°/3°, NF E 03-611 (e.g. ART 120x8)
ASMEAmerican Society of Mechanical Engineers - Professional association of mechanical engineers in the USA, publisher of technical standards, norms and guidelines
ASNSymmetrical trapezoidal thread for aerospace technology, ASN 204 (e.g. 10x2 LH)
BTripod thread, flank angle 60°, DIN 4503, see REBELL catalog page 17.8
BABritish Association thread, flank angle 47°30', BS 949, see REBELL catalog page 9.12
BCJapanese and Korean thread for bicycles, flank angle 60°, JIS B 0225, KS B 0226 (e.g. BC 5/16)
BeHBulgarian tire valve thread, flank angle 60°, BDS 6378-67 (e.g. BeH 5.2)
BiBi thread, asymmetrical trapezoidal thread with flank clearance Flank angle 11°/18° (e.g. Bi 6/28 nominal diameter 6 mm, pitch 0.907 = 28 Gg/1")
BlMetal screw thread ST, flank angle 60°, DIN-EN ISO 1478, see catalog page 18.6
BodmerBodmer thread, historical thread for optical and mechanical instruments, flank angle 50° (e.g. 6 x 30 pitch), developed by Johann Georg Bodmer (1786-1864), Swiss mechanical engineer and inventor
BrBriggs thread, tapered pipe thread, flank angle 60°, taper 1:16, STAS 6422 (e.g. Br 1/4")
BSBBritish standard Brass thread with constant pitch 26 Gg/1", flank angle 55°, see REBELL catalog page 9.11
BSCBritish bicycle thread, flank angle 60°, BS 811, NEN 5516, see REBELL catalog page 18.5
BS ConBritish standard conduit thread, BS 949, flank angle 55° (e.g. 1/2 x 18 BS Con)
BSFBritish Whitworth fine thread, flank angle 55°, BS 949 Part 2, see REBELL catalog page from 9.9  
BSF truncWhitworth fine thread with shortened flanks, BS 84-1956 (e.g. ½ in.-16 BSF trunc)
BSMOBritish microscope lens thread, BS 3569, flank angle 55° (e.g. 0.800-36 BSMO)
BSPWhitworth pipe thread (G), flank angle 55°, DIN-ISO 228, see REBELL catalog chapter 10
BSPFBritish Standard Pipe Fitting (Fastening) Thread, BS-2779, flank angle 55° (e.g. ½” BSPF)
BSPMBritish Standard Pipe Mechanical Thread, BS-2779, obsolete British pipe thread, replaced by G ISO 228
BSPPBritish Standard Pipe Parallel Thread, Cylindrical Whitworth female pipe thread, flank angle 55°, ISO 7/1, see REBELL catalog page 11.4
BSP.PlBritish Standard Pipe Parallel Thread, Cylindrical Whitworth female pipe thread, flank angle 55°, ISO 7/1 (identical to BSPP)
BSPTBritish Standard Pipe Taper Thread, tapered Whitworth thread, flank angle 55°, ISO 7/1, see REBELL catalog page 11.5
BS SPBritish Standard for Spark Plugs, British spark plug thread, Metric ISO thread form, flank angle 60°, BS 45:1972 (e.g. 14 x 1.25 plug)
BSWBritish standard Whitworth thread, flank angle 55°, BS 84, see REBELL catalog page from 9.1
BUTTAmerican National Standard Buttress Inch Screw Thread, ANSI B1.9-1973, flank angle 7°/45° (e.g. 2.5-8 BUTT-2A)
ButtressBritish buttress thread, BS 1657:1950 (e.g. 2.0 B.S. Buttress 8 tpi)
CEICycle Engineers Institute, British bicycle thread, flank angle 60° (precursor thread of BSC)
CMFrench steel conduit thread, flank angle 80°, NF C 63-021 (e.g. CM 10)
C MountAmerican National Standard for motion-picture cameras – threaded lens mounts – 16-mm cameras; ANSI/SMPTE 76-1985, flank angle 60° (1-32)
CNSwedish bicycle thread, flank angle 60°, SMS 365 (e.g. CN 9.5-26)
CZNMulti-start metric thread to Carl Zeiss standard CZN 73. basic profile to DIN 13 part 19, flank angle 60° (e.g. M 36 x 7.5 P 0.75 10 starts)
D MountAmerican National Standard for motion-picture cameras – threaded lens mounts – 8-mm cameras; ANSI/SMPTE 76-1985, flank angle 60° (5/8-32)
DrCable release thread DIN 19004 1980-08, flank angle 60°, form A: conical thread taper angle 28° (dimension 3.4 x 0.5), form B: cylindrical thread (M 3.5 x 0.5 - 6H), see REBELL catalog page 17.8
DWDywidag thread for prestressed concrete shuttering, flank angle 90° (e.g. DW 15 x 10)
EElectrical (Edison) thread, DIN-EN 60061-1, see REBELL catalog page 17.6
E conTapered gas cylinder thread to DIN-EN 144-1, DIN-EN-ISO 11116-1, flank angle 55° (e.g. E 17 con)
EGInsert thread for threaded wire inserts EG-M, EG-MF, EG-UNC, EG-UNF etc., see REBELL catalog chapter 16
FestsitzTight-fit thread with transition tolerance zone DIN 13 part 51 (e.g. M10 Sk6, M12 Sn4) (see also MFS)
Festsitz PNTight fit thread for vehicle construction according to factory standard (e.g. BMW-N11275.0, Mercedes-Daimler-Benz 34310, Porsche-PN 1115)
FGbicycle thread, flank angle 60°, DIN 79012, DIN-ISO 6698, see REBELL catalog page 18.4
FGHNA fine thread DIN 80101, table AN 100, flank angle 55° (e.g. 1 "FG, 29FG)
FPTFemale Pipe Thread, American tapered female pipe thread, taper 1:16, flank angle 60°(e.g. ¼" FPT) - Thread dimensions are identical with NPT
F-PTFDryseal Fine Taper Pipe Thread, American dry sealing tapered pipe thread, with fine pitch, ANSI B1.20.3-1976 (R 1982), flank angle 60°,(e.g. ¼ - 27 F-PTF)
FRNorwegian Whitworth thread, flank angle 55°, NS 74 (e.g. FR 2")
GWhitworth pipe thread, flank angle 55°, DIN-ISO 228, see REBELL catalog chapter 10
GAAustralian pipe thread, flank angle 55°, AS 1722 (e.g. GA 1/2 / 15)
GazFrench pipe thread, cylindrical, NFE 03-005 (e.g. 1/8-28 Gaz) (Gaz is largely identical to pipe thread G DIN ISO 228)
GfFreezing pipe thread in mining, for freezing pipes and lye downpipes in freezing shaft construction DIN 4930-2 (e.g. Gf 127)
GgRod pipe thread, tapered, for deep drilling technology in wells and mining, DIN 4941 taper 1:16 (e.g. Gg 51), DIN 20314 taper 1:4 (e.g. Gg 4.1/2)
GHTGarden Hose Thread, (e.g. 1.0625-11.5 TPI GHT)
GkItalian tapered pipe thread, flank angle 55°, taper 1:16, UNI 6124.74 (e.g. Gk 1/2)
GLRound thread for glass containers, DIN 168 (e.g. GL 25 x 3)
GlasgGlass threads for protective glasses and caps, DIN 40450 (e.g. Glasg 74.5)
GMDutch thread for gas meter, flank angle 55°, NEN 2373 (e.g. GM 3/4)
GPIGlass Packaging Institute Threads, American thread for glass bottles and containers
GSSaw thread for plastic and glass containers DIN 55525 (e.g. GS 22)
HWood screw thread, flank angle 60°, DIN 7998, see REBELL catalog page 18.7
HA, HBThread for bone screws and nuts for surgical implants, DIN 58810 (e.g. HA 4.5, HB 6.5)
HamannHamann cartridge thread, historical thread, used on Hamann lathes
HKHK-Piston thread, special thread, flank angle 80° (e.g. HK 4.2)
HNAFine thread, flank angle 55°, DIN 80101, table AN 100 (e.g. 32FG-HNA)
IGSpecial thread for containers, wooden barrels, rainwater tanks S60x6, for this purpose connection adapter with thread reduction for connecting pumps, hoses, couplings and ball valves (e.g. IG x ¾" AG)
ISAHistorical German thread from 1919, further development of the SI thread and precursor of the DIN profile
JGSpecial thread JG, flank angle 55° (e.g. JG 26 x 16 Gg/1")
KSSaw thread for plastic containers, flank angle 40°/10°, DIN 6063-1 (e.g. KS 22)
KTTrapezoidal thread for plastic containers, flank angle 20°, DIN 6063-2 (e.g. KT 22)
LeicaLeica camera lens thread, flank angle 60°, dimensions: 39 x 0.977, nominal diameter 39 mm, pitch 0.977 = 1/26", flank diameter 38.34 mm, core diameter 37.73 mm
LNAerospace thread, LN 9163, DIN EN 2158 (e.g. LN 9163 M6-4H5H)
LhLionheart thread was used in precision engineering for thread diameters from 1 to 10 mm (VDI thread), flank angle 53°8' (e.g. Lh 6.9 x 0.625)
LPLinePipe, (see API)
MMetric ISO thread, flank angle 60°, DIN 13, see REBELL catalog chapter 3
MFMetric ISO fine thread, flank angle 60°, DIN 13, see REBELL catalog chapter 4
MF-ElMetric ISO fine thread for electrical installation pipes, flank angle 60°, DIN-EN 60423, see REBELL catalog page 15.6
MFSRegular and fine thread for interference fit in cast aluminium alloys DIN 8141 : July 1993 (e.g. MFS 12 x 1.5)
MJMetric aerospace thread MJ, flank angle 60°, with enlarged core radius, DIN-ISO 5855, see REBELL catalog page from 3.41
MkDutch metric tapered external thread, flank angle 60°, taper 1:16, NEN 1988 (e.g. Mk 20x1.5)
M kegMetric tapered thread, taper 1:16, flank angle 60°, DIN 158, see REBELL catalog page 17.5
MpDutch metric tapered female thread, flank angle 60°, taper 1:16, NEN 1988 (e.g. Mp 6)
NCobsolete for UNC
NC 5Interference-fit thread, American thread for interference fits (tight fit thread), ANSI B1.12-1972, flank angle 60°, cylindrical (e.g. NC 5 HF)
NEFobsolete for UNEF
NFobsolete for UNF
Ng, NNSewing machine thread Ng, DIN 5309, flank angle 60° (e.g. 3/32 x100 Gg/1"); obsolete: sewing standard 100 (e.g. 11/64" x 40 Gg)
NGONational Gas Outlet Threads, American gas outlet thread, cylindrical, flank angle 60°, ANSI B57.1 (e.g. .885-14 NGO-LH-INT)
NGSNational Gas Straight Threads, American National Gas Pipe thread, cylindrical, ANSI CGA V-1, flank angle 60° (e.g. 1/8-27 NGS)
NGTNational Gas Taper Threads, American gas pipe thread, tapered, flank angle 60°, taper 1:16, ANSI B 57.1-1977, ANSI CGA V-1 (e.g. 1/8-27 NGT)
NHNational Hose Coupling Screw Threads, American thread for hose couplings, cylindrical (fire protection, fire fighting), flank angle 60°, ANSI B 1.20.7, NFPA 194-1974 (e.g. .75-8 NH)
NHRNational Standard Hose Coupling Threads for garden hose applications, American pipe thread for garden hose couplings, cylindrical, flank angle 60°, ANSI B2.4 (e.g. .75-11.5 NHR)
NHSSwiss watch thread, flank angle: 50° (profile 1), 60° (profile 2), ASA (e.g. 1.5 x 0.3 NHS)
NPSAmerican Standard Straight Pipe Threads, American cylindrical standard pipe thread, mounting thread for general application, flank angle 60°, ANSI B94.9 -1971, see REBELL catalog page 12.4
NPSCAmerican Standard Straight Pipe Threads in pipe couplings, American cylindrical standard pipe thread for pipe couplings, flank angle 60°, ANSI/ASME B1.20.1 -1976, see REBELL catalog page 12.5
NPSFDryseal American Standard Fuel Internal Straight Pipe Threads, American cylindrical standard pipe thread, dry sealing internal thread for fuel lines, flank angle 60°, ANSI/ASME B1.20.3 -1976, see REBELL catalog page 12.5
NPSHAmerican Standard Straight Pipe Threads for loose-fitting mechanical joints for hose couplings, American cylindrical standard pipe thread for mechanical connections on hose couplings, flank angle 60°, ANSI/ASME B1.20 -1976, see REBELL catalog page 12.5
NPSIDryseal American Standard Intermediate Internal Straight Pipe Threads, American cylindrical standard pipe thread, dry sealing internal thread, flank angle 60°, ANSI/ASME B1.20.3 -1976, see REBELL catalog page 12.5
NPSLAmerican Standard Straight Pipe Threads for loose-fitting mechanical joints with locknuts, American cylindrical standard pipe thread for mechanical joints with locknuts, flank angle 60°, ANSI/ASME B1.20 -1976, see REBELL catalog page 12.5
NPSMAmerican Standard Straight Pipe Threads for free-fitting mechanical joints for fixtures, American cylindrical standard pipe thread for mechanical fastenings, flank angle 60°, ANSI/ASME B1.20 -1976, see REBELL catalog page 12.4
NPTAmerican Standard Taper Pipe Threads, American tapered pipe thread for threads with sealant, flank angle 60°, ANSI B1.20.1, see REBELL catalog chapter 13
NPTFDryseal American Standard Taper Pipe Threads, American tapered pipe thread for threads without sealant (dry sealing), flank angle 60°, ANSI B1.20.3, see REBELL catalog chapter 13
NPTRAmerican Standard Taper Pipe Threads for Railing Joints, American standard pipe thread, tapered, for railing fittings, ANSI/ASME B1.20.1-1983 (e.g. ½ - 14 NPTR)
NSobsolete for UNS
obRomanian microscope lens thread, flank angle 55°, STAS 6852-81 (whether 4/5" x 1/36")
PESwiss Whitworth thread, flank angle 55°, SNV 24460 (e.g. 3/16" PE)
PFKorean cylindrical pipe thread, KS B 0221, flank angle 55° (e.g. PF 6 / 1/8)
PgSteel conduit thread, flank angle 80°, DIN 40430, see REBELL catalog page 15.6
PJParallel Pipe Thread PJ ½" JIS B 0202, Japanese cylindrical pipe thread, flank angle 55
PLAsymmetrical trapezoidal screw threads of plastic material, Swedish asymmetrical trapezoidal thread for plastic containers, flank angle 30°/4°, (e.g. PL 10 x 3)
PrSwedish steel conduit thread, SEN 241017, flank angle 80° (e.g. Pr 12.5)
PTKorean tapered pipe thread, KS B 0222, flank angle 55°, taper 1:16 (e.g. PT 6 / 1/8)
PTF-SAE- SHORTDryseal SAE Short Taper Pipe Threads, American dry sealing SAE pipe thread, tapered, short, ANSI B1.20.3-1976, (R 1982), flank angle 60°, taper 1:16 (e.g. 1/8 - 27 PTF-SAE SHORT)
PTF-SPL- SHORTDryseal Special Short Taper Pipe Threads, American dry-sealing special pipe thread, tapered, short, ANSI B1.20.3, (R 1982), or according to Swedish standard SMS 1704, 1708 (e.g. 1/8-27 PTF-SPL SHORT)
PTF-SPL- Extra ShortDryseal Special Extra Short Taper Pipe Threads, American dry sealing special pipe thread, tapered, extra short, ANSI B1.20.3-1976, flank angle 60°, taper 1:16 (e.g. 1/8-27 PTF-SPL EXTRA SHORT)
RTapered Whitworth pipe male thread, taper 1:16, flank angle 55°, DIN 2999, see REBELL catalog page 11.5
RcTapered Whitworth female pipe thread, taper 1:16, flank angle 55°, ISO 7/1, BS 21, see REBELL catalog page 11.5
RCAustralian tapered female pipe thread, AS 1722, flank angle 55°, taper 1:16 (e.g. RC 1.1/2 / 40)
RdRound thread, flank angle 30°, DIN 405, see REBELL catalog page 15.4
RdGDanish round thread, DS 199, flank angle 30° (e.g. RdG 60)
RMSRoyal Microscopical Society, thread for microscope objectives, flank angle 55° DIN 58888, ISO 8038 (W 0.8 x 36), see REBELL catalog page 17.7Rp
RpCylindrical Whitworth female pipe thread, flank angle 55°, DIN 2999, see REBELL catalog page 11.4
S&HMechanic standard thread, Siemens & Halske thread, historical telephone thread, developed around 1900 (e.g. thread number 11: outer diameter 8.955 mm, pitch 1.21 mm, flank angle 50°)
SMetric saw thread for general application, DIN 513, flank angle 30°/3°, see REBELL catalog page 18.8
SMetric saw thread in mining, DIN 20401, flank angle 30°/3°, see REBELL catalog page 18.9
SASwiss SA thread, SNV 24462, flank angle 60°, (e.g. SA 8)
SAESociety of Automotive Engineers, American vehicle thread, flank angle 60° (e.g. ½ - 20 SAE)
S.A.E.-S.P.S.A.E. Standard Threads for Spark Plugs, American spark plug thread, metric ISO thread, flank angle 60° (e.g. M14x1.25 S.A.E.)
SBManufacturers Stovebolt Standard Thread, Historical American Standard Thread in Vehicle Engine Building (Chevrolet and GMC trucks before 1973)
S DeNMetric special saw thread according to Deckel-Norm DeN 1.596.01. Flank angle 45°/5° (S20x2 DeN) for collets, sleeves, arbors, quills etc. on lid-, tool- and milling machines, see REBELL catalog page 18.8
SellersHistorical American V-thread with 60° flank angle, introduced by William Sellers in 1864 From the Sellers thread profile the USST thread according to ASA B 1.1-1935 developed and today's UN thread ANSI/ASME B1.1
S.F.Systems Francais, French pointed thread, flank angle 60° (e.g. No.2: 14x2)
SgCollet thread (e.g. W 5 x 36, W 6.85 x 40); thread for pull collets to DIN 6341-2 1993
SgFItalian metric saw-fine thread, UNIM 128, flank angle 30°/3° (e.g. 80 SgF)
SGTSpecial Gas Taper Threads, American special gas pipe thread, tapered, ANSI CGA V-1, flank angle 60°, taper 1:8 (e.g. 1/8-27 SGT)
SISystème International, French metric thread, flank angle 60° (e.g. SI 4 x 0.75)
SimModified French SI thread for the aircraft industry, NF L 05.200
Sk6see tightening thread
SMJapanese and Korean thread for sewing machines, JIS B 0226, KS B 0225, flank angle 60° (e.g. SM 1/16 threads 80)
SMASystems Metrique Amélioré, French metric thread with enlarged core radius, according to French standard N.SE.23 November 1950, flank angle 60°(e.g. SMA 24 x 2.5)
Sn4see tightening thread
SpOld Swiss special thread Whitworth thread form according to ESCHER WYSS standard 2040, left and right-hand thread from 25 to 200 mm diameter, for crank pins, regulating rods and the like, in machine and turbine construction, flank angle 55° (e.g. Sp 70 x 8 Gg/1" N 2040)
Spez-Rdspecial round thread, female thread, flank angle 60° changing to 30°, combined thread profile of metric ISO-thread DIN 13 and metric ISO-trapezoidal thread DIN 103 The special round nut thread can be paired with metric ISO bolt thread according to DIN 13, (e.g. Spez-Rd 12 x 1.75)
SQSquare Thread, Indian flat thread, IS:4694 (e.g. SQ 30x6)
STMetal screw thread ST, flank angle 60°, DIN-EN ISO 1478, see REBELL catalog page 18.6
STUB-ACMEAmerican trapezoidal thread, flattened, with shortened thread depth, flank angle 29°, ANSI B 1.8-1977 (e.g. ½ -20 Stub-Acme)
STIHelical Coil Wire Screw Thread Inserts, American insert thread to accept HC threaded wire inserts, ANSI B94.9-1971, see REBELL catalog chapter 16
SWGDutch bicycle thread, NEN 5516, flank angle 60° (e.g. 15-56 SWG)
TItalian round thread, UNAV 8023, flank angle 30° (e.g. 12 x 1/10 T)
TETubes électriques, French pipe thread, NFC 68-311, flank angle 80° (e.g. TE 7-20)
TGLTechnical standards, quality regulations and delivery conditions in the GDR. For example: TGL 42727 1986: round thread for general application, flank angle 30° (e.g. Rd16), corresponds as far as possible to the round thread according to DIN 405
ThurySwiss watch thread, flank angle 47°30' (similar to the British BA thread)
TPIShort for: Threads Per Inch (number of threads per inch)
TrMetric ISO trapezoidal thread DIN 103, flank angle 30°, see REBELL catalog chapter 14
TrRounded trapezoidal thread for rail vehicles DIN 30295 1973-05, flank angle 30° (e.g. Tr 40 x 5 DIN 30295); this thread is mainly used for spring clamping screws on locomotives.
UNUnified National Thread, American UN thread series with constant pitches (e.g. 20, 28 or 32 threads per inch), flank angle 60°, see REBELL catalog page 7.7
UN-8Unified National Thread, American UN thread series with constant pitch 8 turns per inch, see REBELL catalog page 8.4 to 8.5
UN-12Unified National Thread, American UN thread series with constant pitch 12 threads per inch, see REBELL catalog page 8.6
UN-16Unified National Thread, American UN thread series with constant pitch 16 threads per inch, see REBELL catalog page 8.8
UNCUnified National Coarse Thread, American standard coarse thread ANSI B1.1, flank angle 60°, see REBELL catalog chapter 5
UNEFUnified National Extra-Fine Thread, American Standard Extra-Fine Thread, flank angle 60°, see REBELL catalog page 7.4 to 7.6
UNFUnified National Fine Thread, American standard fine thread, ANSI B 1.1 flank angle 60°, see REBELL catalog chapter 6
UNJCUNJ coarse thread (UNC profile with enlarged core radius) ISO 3161, flank angle 60°, see REBELL catalog page 7.9 and 7.10
UNJFUNJ fine thread (UNF profile with enlarged core radius) ISO 3161, flank angle 60°, see REBELL catalog page 7.11 and 7.12
UNMUnified National Miniature Screw Threads, American standard miniature screw thread, flank angle 60°, ASA B 1.10-1958 (e.g. 0.80 UNM)
UNRUnified National Thread with rounded root, American standard thread with constant pitch and a core radius of 0.108 P to 0.144 P (P=pitch), ANSI B1.1-1982, flank angle 60°, cylindrical (e.g. 2.5/8-4 UNR - 2A)
UNRCUnified National Coarse Thread with rounded root, American standard thread (external thread with core fillet 0.14434 P), ANSI B1.1-1982 (e.g. ¼-20 UNRC - 2A)
UNREFUnified National Extra-Fine Thread with rounded root, American Unified Extra-Fine Thread (external thread with core fillet 0.14434 P), ANSI B1.1-1982 (e.g. 1-20 UNREF - 2A)
UNRFUnified National Fine Thread with rounded root, American standard fine thread (external thread with core fillet 0.14434 P), ANSI B1.1-1982 (e.g. ¼-28 UNRF - 3A)
UNRSUnified National Special Thread with rounded root, American standard thread with special diameter and pitch combinations and uniform tolerance specifications (external thread with core fillet 0.14434 P), ANSI B1.1-1982 (e.g. ¼-24 UNRS - 3A)
UNSUnified National Special Thread, American standard thread with special pitches, flank angle 60°, see REBELL catalog page 7.7
URSTrapezoidal thread for thread fit with backlash (e.g. 13x2 URS 09001)
USSTUS standard American National Form, American standard thread (e.g. ¼ - 28 USST)
USTUnified Screw Threads, American-British-Canadian uniform thread from 1948 (obsolete)
VISO tyre valve thread, ISO 4570/1..3, flank angle 60° (e.g. 8 V 2)
VV-Thread 60-degree with truncated crest and root, American V-point thread with flattened profile, flank angle 60
VDIHistorical thread of the Association of German Engineers from 1888, flank angle 53°8' (e.g. 10 x 1.40 VDI); replaced in 1898 by the S.I. thread
VenOld DDR valve thread, TGL 39158, flank angle 60° (e.g. Ven 5)
VgValve thread for vehicle tyres DIN 7756, flank angle 60° (e.g. Vg 8), see REBELL catalog page 17.4
VzCzech tyre valve thread, CSN 014084, flank angle 60° (e.g. Vz 12)
WWithworth thread, named after Sir Joseph Whitworth, was the first standardised thread in the world, introduced in 1841, standardised in Germany according to DIN 11, withdrawn in 1970, flank angle 55° (e.g. W3/8"), replaced by BSW thread
WW 80 x 1/11", thread for valve sleeves, neck rings and protection caps on compressed gas cylinders, DIN 4668, Sept. 1968, thread profile according to Whitworth pipe thread, flank angle 55°, gas cylinders; thread for nozzles, neck rings and protection caps; outside diameter 80 mm, flank diameter 78.521 mm, core diameter 77.042 mm
WHistorical Whitworth fine thread 2 from 20 to 189 mm diameter, DIN 240 February 1923, thread profile according to DIN 11, flank angle 55° (e.g. W 60 x 1/6")
W DIN 477Tapered thread for gas cylinders, cylindrical thread for side nozzles DIN 477, flank angle 55°, see REBELL catalog page 11.7 to 11.8
WHITWhitworth Thread Series, British Whitworth standard special thread, flank angle 55°, with special pitches, BS 84 (e.g. WHIT 1/4-32)
WHIT.S.Whitworth Selected Thread Series, British Whitworth thread, selection series, BS 84, AS B47 (e.g. 1.25 in.-12 WHIT.S.)
W-4 GgWhitworth thread with constant pitch 4 turns per inch, DIN 239, thread profile Whitworth shape, flank angle 55°, outside diameter in mm, pitch in turns per inch (e.g. W 60 x 1/4)
W-10 GgWhitworth fine thread for locomotive construction, DIN LON 286, 1937, flank angle 55° (e.g. W 22 x 10 Gg), not used since about 1975
W-20 TPIShank Cutters Whitworth-Form 20-TPI, Standard SKF-Specification, End mill tightening thread, BS 122, flank angle 55° (e.g. W 16 x 20 TPI)
W12x12Hoof stud thread for horse studs, shoeing, W 12 x 12 Gg/1", single thread, flank angle 55
YvTurkish round thread, TS 61/37, flank angle 30° (e.g. Yv 30)
6AZMetric ISO thread according to DIN 13, internal thread according to tolerance class 6AZ for hot-dip galvanizing (e.g. M12-6AZ outside diameter min. 12.335 mm; pitch diameter min. 11.198 mm, max. 11.398 mm; core diameter min 10.441 mm, max 10.776 mm)
25EGas cylinders – 25E taper thread for connection of valves to medical and industrial gas cylinders, specification, ISO 10920:1997, International tapered gas cylinder thread 25E, nominal diameter 25.8 mm
60° stub ACMEAmerican ACME thread, flattened, with shortened thread depth, flank angle 60°, ANSI B1.9-1973 (e.g. 0.500-20 60°)

 

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