NPT Fittings
A complete line of couplings and adapters with NPT threaded connections are now available. These fittings feature 316 cold-worked stainless steel construction, with other materials available. HiP maintains an inventory of these fittings for quick ship requirements.
NPT Straight CouplingsAdd to Cart
Catalog No.
Pressure
Connections
A
B
Length
Hex
15-21NFA
15000
1/8” FEMALE NPT x 1/8” FEMALE NPT
NFA
NFA
1 1/4"
3/4"
15-21NFB
15000
1/4” FEMALE NPT x 1/4” FEMALE NPT
NFB
NFB
1 3/4"
1"
15-21NFC
15000
3/8” FEMALE NPT x 3/8” FEMALE NPT
NFC
NFC
1 3/8"
1"
15-21NFD
15000
1/2” FEMALE NPT x 1/2” FEMALE NPT
NFD
NFD
1 7/8"
1 3/8"
10-21NFF
10,000
3/4” FEMALE NPT x 3/4” FEMALE NPT
NFF
NFF
2 1/2"
1 3/8"
10-21NFH
10,000
1” FEMALE NPT x 1” FEMALE NPT
NFH
NFH
2 1/2"
1 3/4"
NPT Reducer CouplingsAdd to Cart
Catalog No.
Pressure
Connections
A
B
Length
Hex
15-21NFBNFC
15000
1/4” FEMALE NPT x 3/8” FEMALE NPT
NFB
NFC
1 1/2"
1"
15-21NFBNFD
15000
1/4” FEMALE NPT x 1/2” FEMALE NPT
NFB
NFD
2"
1 3/8"
15-21NFCNFD
15000
3/8” FEMALE NPT x 1/2” FEMALE NPT
NFC
NFD
2"
1 3/8"
Adapters: Male to Male NPTAdd to Cart
Catalog No.
Pressure
Connections
A
B
Length
Hex
15-21NMANMA
15000
1/8” MALE NPT x 1/8” MALE NPT
NMA
NMA
1 3/4"
1/2"
15-21NMBNMB
15000
1/4” MALE NPT x 1/4” MALE NPT
NMB
NMB
1 7/8"
5/8"
15-21NMCNMC
15000
3/8” MALE NPT x 3/8” MALE NPT
NMC
NMC
2"
3/4"
15-21NMDNMD
15000
1/2” MALE NPT x 1/2” MALE NPT
NMD
NMD
2 1/8"
1"
10-21NMFNMF
10,000
3/4” MALE NPT x 3/4” MALE NPT
NMF
NMF
2 3/8"
1 1/8"
10-21NMHNMH
10,000
1” MALE NPT x 1” MALE NPT
NMH
NMH
2 5/8"
1 3/8"
15-21NMBNMC
15000
1/4” MALE NPT x 3/8” MALE NPT
NMB
NMC
2"
3/4"
15-21NMBNMD
15000
1/4” MALE NPT x 1/2” MALE NPT
NMB
NMD
2"
7/8"
15-21NMCNMD
15000
3/8” MALE NPT x 1/2” MALE NPT
NMC
NMD
2"
1"
Adapters: Female to Male NPTAdd to Cart
Catalog No.
Pressure
Connections
A
B
Length
Hex
15-21NFANMA
15000
1/8” FEMALE NPT x 1/8” MALE NPT
NFA
NMA
1 1/2"
3/4"
15-21NFANMB
15000
1/8” FEMALE NPT x 1/4” MALE NPT
NFA
NMB
1 3/4"
3/4"
15-21NFANMC
15000
1/8” FEMALE NPT x 3/8” MALE NPT
NFA
NMC
1 5/8"
3/4"
15-21NFANMD
15000
1/8” FEMALE NPT x 1/2” MALE NPT
NFA
NMD
1 3/4"
7/8"
15-21NFBNMA
15000
1/4” FEMALE NPT x 1/8” MALE NPT
NFB
NMA
1 5/8"
3/4"
15-21NFBNMB
15000
1/4” FEMALE NPT x 1/4” MALE NPT
NFB
NMB
1 5/8"
1"
15-21NFBNMC
15000
1/4” FEMALE NPT x 3/8” MALE NPT
NFB
NMC
1 5/8"
1"
15-21NFBNMD
15000
1/4” FEMALE NPT x 1/2” MALE NPT
NFB
NMD
1 3/4"
1"
15-21NFCNMB
15000
3/8” FEMALE NPT x 1/4” MALE NPT
NFC
NMB
1 7/8"
1"
15-21NFCNMD
15000
3/8” FEMALE NPT x 1/2” MALE NPT
NFC
NMD
1 3/4"
1"
15-21NFDNMA
15000
1/2” FEMALE NPT x 1/8” MALE NPT
NFD
NMA
2"
1 3/8"
15-21NFDNMB
15000
1/2” FEMALE NPT x 1/4” MALE NPT
NFD
NMB
2"
1 3/8"
15-21NFDNMC
15000
1/2” FEMALE NPT x 3/8” MALE NPT
NFD
NMC
1 3/4"
1 3/8"
15-21NFDNMD
15000
1/2” FEMALE NPT x 1/2” MALE NPT
NFD
NMD
2 1/4"
1 1/8"
10-21NFFNMD
10,000
3/4” FEMALE NPT x 1/2” MALE NPT
NFF
NMD
2 3/8"
1 3/8"
10-21NFFNMH
10,000
3/4” FEMALE NPT x 1” MALE NPT
NFF
NMH
2 3/8"
1 3/8"
10-21NFHNMD
10,000
1” FEMALE NPT x 1/2” MALE NPT
NFH
NMD
2 3/4"
1 7/8"
10-21NFHNMF
10,000
1” FEMALE NPT x 3/4” MALE NPT
NFH
NMF
2 3/4"
1 7/8"