* Thread size refers to the nominal bore of the pipe Subtract approx 1/4″ (6mm) from thread diameter measurement for nominal pipe size BSPP BSPP male with conical 30° seat (60° included angle) seal against matching conical 30° seat of BSPP female swivel BSPP – Form B – Seals using a metal to Metal sealing EdgeAlso referred to as British Standard Taper Pipe or Pipe Taper, or Conical Thread Taper is 3/4" taper per foot ( 1 in 16 on the diameter) Various Symbols BSPT, BSPTr, PT, KR, Rc suggested tap drill sizes British Standard Pipe Parallel or Taper BSP or BSPT;Example Typical designation for Thread according ISO 228 ISO 228 G 3 1/4"
G3/8 thread gages
G3/8 thread gages-Whitworth Parallel Pipe Thread DIN ISO 228 (DIN 259) BSPP (British Standard Pipe Parallel) British Standard Pipe Parallel Thread, with sealant compound, (parallel, cylindrical), external = G The flank angle is 55° Advertising Nominal DiameterIt is the internal diameter of the pipe, on which it is used
G3/819GPNP Parallel Pipe Thread Limit Plug Gauge (G) from SOKUHANSHA MISUMI offers free CAD downloads, short lead times, competitive pricing, and no minimum order quantity Purchase G3/819GPNP Parallel Pipe Thread Limit Plug Gauge (G) from SOKUHANSHA, FA & metal molding parts, industrial tools and consumablesI need to order some G3/8" NPT 3000# rated plugs in ASTM A105 for a job, and one of the guys I normally order from has quoted me for standard 3/8" NPT because he's not heard of G3/8" NPT before I've been Googling it and I can't seem to find any infoG3/8 Rc3/8 1400 11 The optimum situation would be to position the tap tolerance at the upper part of the internal thread area above the upper limit of the NOGO gauge, but then there is a risk that the tap will cut an oversized thread Taps with an "X" tolerance, used for materials that do not cause oversize problems, are positioned
1/16 28 28 1/4 F 63mm 65mm 0256 1/8 28 6mm 28 21Whitworth pipe thread (cylindrical)DIN 259 (ISO 228) Thread G1/8″ G1/4″ G3/8″ G1/2″ G5/8″ G3/4″ G7/8″ Thread diameter mm 9728 955Thread B Female Connection Thread H in (mm) L in (mm) SW (Hex) Fitting Material Optional G (BSPP) Straight Thread Hose Barbs HS1818MG Adapter, G 3/8″ – male to 3/8″ NPT – female G3/8 3/8 NPT 045 (11) 137 (35) 094 (24) ZincPlated Steel with Sealing Washer HS1212MG Adapter, G 1/2″ – male to 1/2″ NPT
Google searches haven't turned up anything solid, it could be a ground thread (NPT) or a pipe fitting from what I've been able to findThread G1/4 (2) G1/8 (2) M26X15 (1) R1 (1) R1/2 (1) R1/4 (1) R1/8 (1) R3/4 (1) R3/8 (3) O/D Tube 6 mm (3) 8 mm (9) 10 mm (9) 12 mm (8) 14 mm (1) Brand IMI Norgren (53) Range (17) 24 (3) 102GA (2) 60 (1) G3/8 Shape Straight Stock 1328 Product Datasheet (PDF) CAD Model To review the configuration of the product before youBASICS OF THREAD INDEX TYPE OF THREAD 3 1 BASICS OF THREAD 11 Gender 4 12 Handedness 4 13 Design 4 14 Pitch / TPI 5 15 Diameter 5 16 Angle 5 17 Crest / root 5 2 MOST COMMON THREADS 21 M ISO thread (metric) 7 22 NPT Pipe thread 8 23 G/R/Rp Whitworth thread (BSPP/BSPT) 9 24 UNC/UNF Unified National thread 10
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