Garden Hose Thread Male Adapter
- Outside diameter of a male GHT adapter - 1 1/16 inches (1.06) - 11.5 Threads per inch
- Garden hose thread is not the same as 3/4 inch pipe thread (NPT)
1" Male Adapter
- Inside diameter of a male adapter - 1 inch
- Outside diameter of a male NH / NST adapter - 1 3/8 inches (1.375) - 8 Threads per inch
- Outside diameter a male NPSH or NPT adapter - 1 5/16 inches (1.295) - 11.5 Threads per inch
1 1/2" Male Adapter
- Inside diameter of a male adapter - 1 1/2 inches
- Outside diameter of a male NH / NST adapter - 2 inches (1.99) - 9 Threads per inch
- Outside diameter a male NPSH or NPT adapter - 1 7/8 inches (1.87) - 11.5 Threads per inch
1 3/4" Hose Couplings
- 1 3/4 inch hoses come with 1 1/2 inch couplings
2" Male Adapter
- Inside diameter of a male adapter - 2 inch
- Outside diameter of a male NH / NST adapter - 2 1/2 inches (2.51) - 8 Threads per inch
- Outside diameter a male NPSH or NPT adapter - 2 3/8 inches (2.35) - 11.5 Threads per inch
Note - 2 inch NH or NST is very rare. If the outside diameter of male adapter is approximately two inches, you need 1 1/2 inch NH or NST.
2 1/2" Male Adapter
- Inside diameter of a male adapter - 2 1/2 inches
- Outside diameter of a male NH / NST adapter - 3 1/16 inches (3.06) - 7.5 Threads per inch
- Outside diameter a male NPSH or NPT adapter - 2 13/16 inches (2.84) - 8 Threads per inch
3" Hose Couplings
- Most 3 inch hoses come with 2 1/2 inch couplings
4" Male Adapter
- Inside diameter of a male adapter - 4 inches
- Outside diameter of a male NH / NST adapter - 5 inches (5.01) - 4 Threads per inch
- Outside diameter a male NPSH or NPT adapter - 4 1/2 inches (4.47) - 8 Threads per inch
5" Male Adapter
- Inside diameter of a male adapter - 5 inches
- Outside diameter of a male NH / NST adapter - 6 1/2 inches (6.26) - 4 Threads per inch
6" Male Adapter
- Inside diameter of a male adapter - 6 inches
- Outside diameter of a male NH / NST adapter - 7 inches (7.025) - 4 Threads per inch
