Threads on parallel fasteners use a cylindrical blank having an outside diameter between the major and minor diameters of the finished thread. A bar is rotated between hardened steel dies bearing the reverse thread form. The die threads penetrate the blank surface to form the thread roots and displace material radially outward to form the crests.

threads: BSP parallel: G followed by the designation BSP taper: R followed by the designation Metric Thread Code Metric Thread Code Metric Thread Code M3x0.5 09 M12x1.25 66 M22x1.5 82 M5x0.8 19 M12x1.5 67 M24x1.5 83 M6x1 52 M13x1.25 68 M27x1.5 85 M7x1 55 M14x1.25 70 M30x2 88 M8x1 56 M14x1.5 71 M33x1.5 90

No thread sealant is needed to form a seal. G (supposedly from German/English “Gas”) are the cylindrical pipe threads with 55°apex angle used on originally inch based pipes.

M6 : Basic Thread Data (Pitch, minor & major diameters, depth, lead), Tolerance range for all applicable classes and much more

Determination - Thread Types G or R or BSP G or R (Whitworth) or BSP (British Standard Pipe) Thread Cylindrical threads which are mainly used in countries with imperial system. The size of e. g. R 3/4" does not stand for a diameter. Thus the corresponding size has to be determined according to charts.

G/R/RP - Whitworth thread (BSPP/BSPT) View the table G = BSPP ISO 228 (DIN 259) R/Rp/Rc = BSPT ISO 7 (DIN 2999 replaced by EN10226) UNC/UNF - Unified national thread. View the table UNC ANSI B1.1 UNF ASNI B1.1. Drawings of other threads. Conversion factor. Download the types of thread document.

British Standard Pipe BSP thread chart, BSP thread chart showing TPI and drill sizes. BSPP / BSPT B RITISH S TANDARD P IPE P ARALLEL / B RITISH S TANDARD P IPE T APER

British Pipe Thread ( Whitworth Form) -- Parallel (BSPP/BSPF) -- (G). Major Dia External Thread Internal Thread Tap Size Size pitch Major Dia Pitch Dia Minor 

Pipe Threads. These metric pipe thread sizes have been adopted by the ISO (International Standards Organization), and are primarily intended for pipes or 

POB 1778 Greer, SC 29652 414 West Poinsett Street Greer, SC 29650 [email protected] Ph: 864-848-3993 www.traskinst.com Fax: 864-848-9569 G-SERIES PIPE THREAD (BRITISH

Fastener and Screw / Bolt Design, Formula and Calculations External Pipe Threads per. ISO 228-1, Pipe threads where pressure-tight joints are not made by the threads. These pipe threads are also known as Whitworth pipe threads. Where: D = Major Dia.internal thread D 1 = Minor Dia.internal thread D 2 = Pitch diameter internal thread

High-Pressure Thread-Lock Quick-DisconnectHose Couplings for Hydraulic Fluid. Use these couplings at pressures up to 10, 000 psi. The plug and socket thread together to form a stronger connection than other quick-disconnect couplings. They are compatible with High-Pressure Thread-Lock-shape plugs and sockets.

British Standard Pipe (BSP) has been use as standard in plum and pipe fittings. There are two types of BSP Thread available. Parallel threads & Taper 

British Thread (British Standard Whitworth) -- Coarse Pitch. Nominal Size Ww. Thread Form Type. Major Diameter mm d=D. Pitch mm p. Threads per inch tpi. Pitch Diameter mm d2=D2. Minor Diameter Male Thd. d3. Thread Height H1.

Chart No 1 - Whitworth Threads Whitworth Form Threads (55 Deg Thread Angle) Dimensions in Inches except where stated Thread Form Data Tapping Drill Clearance Drill Diameter O/Diameter Core Pitch Depth Radius Effective Dia T.P.I Dec / Met / Frac Dec / Met / Frac 1/8" 0.1250 0.0930 0.0250 0.0160 0.0034 0.1090 40 0.1004 - 2.55mm 0.1299 - 3.30mm

The most common types of Whitworth thread are: BSPP (G) – British Standard Pipe Parallel; BSPT (R/Rp) – British Standard Tapered Pipe, for pipes and tapered 

POB 1778 Greer, SC 29652 414 West Poinsett Street Greer, SC 29650 [email protected] Ph: 864-848-3993 www.traskinst.com Fax: 864-848-9569 G-SERIES PIPE THREAD (BRITISH STANDARD PIPE PARALLEL

The most common types of Whitworth thread are: BSPP (G) – British Standard Pipe Parallel. BSPT (R/Rp) – British Standard Tapered Pipe, for pipes and tapered thread. An appropriate

THREAD DATA CHART: Metric Thread -- Fine Pitch; Nominal Size ISO MF Thread Form Type Major Diameter mm d=D Pitch mm p Root Radius mm r Pitch Diameter mm d2=D2 Minor Diameter Male Thd. d3 Minor Diameter Thd. D1 Thread Height Male Thd. h3 Thread Height Thd. H1 Tap Drill Diameter mm; 1.0x0.2: M: 1.00: 0.20: 0.029: 0.870: 0.755: 0.783

Requirements for thread form, dimensions, tolerances and designation for fastening pipe threads, thread sizes. ; G 1/4, 13.16, 11.89, 11.80 

1/4″ (6mm) from thread diameter measurement for nominal pipe size. Pitch is Threads Per Inch (TPI). “Gas”, “R” & “G” also refer to BSP. “Male Iron 

The table below summarises BSP sizes to help with general identification. Major diameter is slightly less than the actual outside diameter of the threads.

Whitworth's new standard specified a 55° thread angle and a thread depth of 0.640327p and a radius of 0.137329p. Where p is the pitch. The thread pitch increases with the diameter in steps specified on a chart. The Whitworth thread system was later to be adopted as a British Standard to become British Standard Whitworth (BSW).

1) PF and PT threads are functionally interchangeable with BSPP and BSPT threads, respectively. These are old designations. They are being replaced with G (for 

Table 3: British Standard Pipe Dimensions for Standard Thread Sizes. Nominal G / R size (in), Corresponding Pipe. DN (mm), Actual OD (mm), Wall (mm).

Metric Thread Tolerances. The tolerances TD for internal threads and Td for external threads is derived from the class. The approximate tolerances can be calculated according to the below