Thread Profile Dimensions
Property | mm | Inch |
---|---|---|
Nominal Pipe Size (Ø) | 3/8" | ... |
Pitch (TPI) (P) | 19 | ... |
Pitch (Distance) (P) | 1.337 | 0.0526 |
Thread Tapper Angle (ß) | 1.79° | 1.79° |
Thread V half Angle (α) | 27.5° | 27.5° |
Height of sharp V (H) | 1.284 | 0.0506 |
Thread height (h) | 0.856 | 0.0337 |
Root/Crest Radius (r) | 0.424 | 0.0167 |
Major Diameter (At gauge plane) (d) |
16.662 | 0.656 |
Minor Diameter (At gauge plane) (d1) |
14.95 | 0.5886 |
Pitch Diameter (At gauge plane) (d2) |
15.806 | 0.6223 |
BSPT Series | External Tapared (R) |
Matching Internal Tapered Thread | BSPT Rc 3/8 |
Matching Internal Parallel Thread | BSPT Rp 3/8 |
Relevant Standards | ISO 7-1, ISO 7-2 |
BSPT R 3/8 - Additional Dimensions
mm | ||
---|---|---|
Gauge Length (Lg) | 6.4 | 0.252 |
Lg Tolerance (T1) | 1 Turns | 1 Turns |
Lg Tolerance (T1) | 1.3 | 0.0512 |
Fitting allowance (F) | 2.75 Turns | 2.75 Turns |
Fitting allowance (F) | 3.7 | 0.1457 |
Minimum length of useful threads (Lmin) |
8.8 | 0.3465 |