What is a 3/8 BSP thread?
For example a 1/2″ BSP thread (see above) actually measures more like 3/4″ with a ruler….British Standard Pipe Thread (BSPT)
| BSP Thread Size | Outside Diameter mm / inch | TPI |
|---|---|---|
| 1/16 Inch BSP | 7.7 mm / 0.304″ | 28 |
| 1/8 Inch BSP | 9.7 mm / 0.383″ | 28 |
| 1/4 Inch BSP | 13.16 mm / 0.518″ | 19 |
| 3/8 Inch BSP | 16.66 mm / 0.656″ | 19 |
What is the diameter of 3/8 BSP?
What are BSP thread sizes?
| BSP Size | Actual Diameter (Imperial) | Actual Diameter (Metric) |
|---|---|---|
| 3/8″ | 6/10 inch | 15mm |
| 1/2″ | 3/4 inch | 19mm |
| 5/8″ | ||
| 3/4″ | 1 inch | 25mm |
What is the difference between BSPP and BSPT?
BSPP is a parallel thread with 55 degree angle. BSPT is a British standard taper thread with 55 degree angle. BSPP does not need any O-ring or bonded seal to form a seal. BSPT (British Standard Pipe Taper) is similar to NPT except there are important differences.
Is ISO parallel thread the same as BSPP?
BSP (British Standard Pipe) threads, using the Whitworth thread form, have been adopted as the ISO standard for pipe threads, and will hereafter be called out as ISO and not as ESP. Parallel threads (also called straight threads) and taper threads.
How is BSPP measured?
How to Measure Your BSP Fittings
- Measure the outer diameter (OD) of the thread (in inches)
- Then subtract 25% from this (¼ inch)
- You’ll then need to make sure it is a BSP fitting so by counting the threads on your coupling, perhaps only just over ¼”, you can just multiply this by four to find the threads per inch.
Can you fit BSPT to BSPP?
Jointing threads: These are pipe threads for joints made pressure-tight by the mating of the threads. They always use a taper external thread, but can have either parallel or taper internal threads. This means a male BSPT (tapered) fitting will seal happily onto a female BSPP (parallel).
What is a BSPP fitting?
BSPP (British Standard Parallel Pipe) is most popular in the UK, Europe, Asia, Australia, New Zealand and South Africa. It is a parallel thread fitting that uses a bonded seal ring to do the sealing.
How big is a tap drill in BSP?
BSPP / BSPT SIZE TPI MAJOR (EXT) MINOR (INT) TAP DRILL 3/4″ 14 26.441 24.117 24.50 7/8″ 14 30.201 27.877 28.00 1″ 11 33.249 31.770 30.50 11/8″ 11 37.897 34.939 35.00
How big is a tap drill in inches?
designation Pipe Size TPI Tap Drill Size Decimal inch 3/8 – 19 10mm 19 9/16 0.5625 1/2 – 14 15mm 14 23/32 0.7188 3/4 – 14 20mm 14 59/64 0.9219 1 – 11 25mm 11 1 11/64 1.1719
How big is a British standard pipe tap?
British Standard Pipe Parallel or Taper BSP or BSPT Nominal Size (inches) T P I Major Diameter (inches) Tapping Drill Size Tapping Drill Size 1/8 28 0.383 11/32 inch 21/64″ 1/4 19 0.518 11.8 mm 11.2mm 1/4 19 0.518 29/64″ 7/16″ 3/8 19 0.656 15.25 mm 14.75mm
How big is a BSP pipe in inches?
British Standard Pipe Parallel or Taper BSP or BSPT Nominal Size (inches) T P I Major Diameter (inches) Tapping Drill Size Tapping Drill Size BSP BSPT 1/16 28 0.304 6.6 mm 1/16 28 0.304 Letter drill G 1/8 28 0.383 8.8 mm 8.4mm