Brass BSPP-to-NPT Pipe Adapters

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85 Products

How to Identify and Measure Fittings

Pipe size is an industry designation, not the actual size. View information about how to measure threaded and unthreaded pipe and pipe fittings.

Medium-Pressure Brass and Bronze Threaded Pipe Fittings

Choose these fittings when you need better strength than our low-pressure brass and bronze pipe fittings. They offer good corrosion resistance. BSPP male threads have a gasket to protect against leaks.

Straight Adapters, Female

BSPP Male Threads with Gasket

For Use With: Air, Natural Gas, Oil, Water
Temperature Range:
NPTF × NPSM: -40° to 160° F
Specifications Met: See table

NPT Female × BSPP Male
Pipe Size	Max. Pressure	Material	Specifications Met		Each
1/16	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N134	000000
1/8	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N135	00000
1/4	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N136	00000
3/8	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N137	00000
1/2	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N138	00000
3/4	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N139	00000
1	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N141	00000
BSPP Female × NPT Male
1/8	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N119	0000
1/4	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N121	00000
3/8	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N122	00000
1/2	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N123	00000
3/4	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N124	00000
1	250 psi @ 72° F	Brass	ASME B1.20.3, ASTM B16, SAE J476	1786N125	00000

Straight Reducing Adapters

BSPP Male Threads with Gasket

For Use With: Air, Natural Gas, Oil, Water
Specifications Met: ASME B1.20.3, ASTM B16, SAE J476

Pipe Size
(A)	(B)	Max. Pressure	Material		Each
NPT Female × BSPP Male
1/16	1/8	250 psi @ 72° F	Brass	1786N282	000000
1/16	1/4	250 psi @ 72° F	Brass	1786N283	00000
1/8	1/16	250 psi @ 72° F	Brass	1786N288	00000
1/8	1/4	250 psi @ 72° F	Brass	1786N289	00000
1/8	3/8	250 psi @ 72° F	Brass	1786N291	00000
1/8	1/2	250 psi @ 72° F	Brass	1786N292	00000
1/4	1/16	250 psi @ 72° F	Brass	1786N295	00000
1/4	1/8	250 psi @ 72° F	Brass	1786N296	00000
1/4	3/8	250 psi @ 72° F	Brass	1786N297	00000
1/4	1/2	250 psi @ 72° F	Brass	1786N298	00000
1/4	3/4	250 psi @ 72° F	Brass	1786N299	00000
1/4	1	250 psi @ 72° F	Brass	1786N311	00000
3/8	1/8	250 psi @ 72° F	Brass	1786N313	00000
3/8	1/4	250 psi @ 72° F	Brass	1786N314	00000
3/8	1/2	250 psi @ 72° F	Brass	1786N315	00000
3/8	3/4	250 psi @ 72° F	Brass	1786N316	00000
3/8	1	250 psi @ 72° F	Brass	1786N317	00000
1/2	1/8	250 psi @ 72° F	Brass	1786N319	00000
1/2	1/4	250 psi @ 72° F	Brass	1786N321	00000
1/2	3/8	250 psi @ 72° F	Brass	1786N322	00000
1/2	3/4	250 psi @ 72° F	Brass	1786N323	00000
1/2	1	250 psi @ 72° F	Brass	1786N324	00000
3/4	1/4	250 psi @ 72° F	Brass	1786N327	00000
3/4	3/8	250 psi @ 72° F	Brass	1786N328	00000
3/4	1/2	250 psi @ 72° F	Brass	1786N329	00000
3/4	1	250 psi @ 72° F	Brass	1786N331	00000
1	1/2	250 psi @ 72° F	Brass	1786N336	00000
1	3/4	250 psi @ 72° F	Brass	1786N337	00000
BSPP Female × NPT Male
1/16	1/8	250 psi @ 72° F	Brass	1786N188	0000
1/16	1/4	250 psi @ 72° F	Brass	1786N189	00000
1/8	1/16	250 psi @ 72° F	Brass	1786N195	0000
1/8	1/4	250 psi @ 72° F	Brass	1786N196	00000
1/8	3/8	250 psi @ 72° F	Brass	1786N197	00000
1/8	1/2	250 psi @ 72° F	Brass	1786N198	00000
1/4	1/16	250 psi @ 72° F	Brass	1786N202	00000
1/4	1/8	250 psi @ 72° F	Brass	1786N203	00000
1/4	3/8	250 psi @ 72° F	Brass	1786N204	00000
1/4	1/2	250 psi @ 72° F	Brass	1786N205	00000
1/4	3/4	250 psi @ 72° F	Brass	1786N206	00000
1/4	1	250 psi @ 72° F	Brass	1786N207	00000
3/8	1/8	250 psi @ 72° F	Brass	1786N209	00000
3/8	1/4	250 psi @ 72° F	Brass	1786N211	00000
3/8	1/2	250 psi @ 72° F	Brass	1786N212	00000
3/8	3/4	250 psi @ 72° F	Brass	1786N213	00000
3/8	1	250 psi @ 72° F	Brass	1786N214	00000
1/2	1/8	250 psi @ 72° F	Brass	1786N216	00000
1/2	1/4	250 psi @ 72° F	Brass	1786N217	00000
1/2	3/8	250 psi @ 72° F	Brass	1786N218	00000
1/2	3/4	250 psi @ 72° F	Brass	1786N219	00000
1/2	1	250 psi @ 72° F	Brass	1786N221	00000
3/4	1/4	250 psi @ 72° F	Brass	1786N224	00000
3/4	3/8	250 psi @ 72° F	Brass	1786N225	00000
3/4	1/2	250 psi @ 72° F	Brass	1786N226	00000
3/4	1	250 psi @ 72° F	Brass	1786N227	00000
1	1/4	250 psi @ 72° F	Brass	1786N231	00000
1	1/2	250 psi @ 72° F	Brass	1786N233	00000
1	3/4	250 psi @ 72° F	Brass	1786N234	00000

Precision Extreme-Pressure Brass Threaded Pipe Fittings

Also known as instrumentation fittings, these have the most precise threads and the tightest tolerances of all the brass pipe fittings we offer. Fittings are brass for good corrosion resistance.

Straight Adapters, Female × Male

For Use With: Air, Argon, Natural Gas, Nitrogen Gas, Oil, Oxygen, Steam, Water
Specifications Met: See table

BSPP Female × NPT Male
Pipe Size	Max. Pressure	Max. Steam Pressure	Specifications Met		Each
1/8	3,200 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	9171K171	000000
1/4	3,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	9171K172	00000
3/8	2,600 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	9171K173	00000
1/2	2,400 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	9171K174	00000
3/4	2,300 psi @ 72° F	1,500 psi @ 300° F	ASME B1.20.1, ASME B31.1, ASME B31.3	9171K175	000000

Extreme-Pressure Brass Threaded Pipe Fittings

Extreme pressures are no problem for these heavy-duty fittings. They are brass for good corrosion resistance.

Straight Adapters, Female × Male

For Use WIth:
NPTF × NPTF: Air, Natural Gas, Oil, Water
All other thread types: Air, Water
Specifications Met:
NPTF × NPTF: ASME B1.20.3, ASTM B124, ASTM B16, ASTM B453, SAE J476
All other thread types: ISO 7.1, ISO 228

BSPP Female × NPT Male
Pipe Size	Max. Pressure	Material		Each
1/8	2,900 psi @ 72° F	Brass	4860K151	00000
1/4	2,100 psi @ 72° F	Brass	4860K152	0000
3/8	1,400 psi @ 72° F	Brass	4860K153	00000
1/2	1,400 psi @ 72° F	Brass	4860K154	00000
3/4	1,700 psi @ 72° F	Brass	4860K155	00000

High-Pressure Brass Threaded Pipe Fittings

These fittings have the strength to handle high-pressure applications. They are brass for good corrosion resistance.

Straight Adapters, Female × Male

For Use With: Air, Natural Gas, Oil, Water
Specifications Met: See table

BSPP Female × NPT Male
Pipe Size	Max. Pressure	Specifications Met		Each
1/8	1,000 psi @ 72° F	SAE J530, SAE J531	50785K59	00000
1/4	1,000 psi @ 72° F	SAE J530, SAE J531	50785K601	00000
3/8	1,000 psi @ 72° F	SAE J530, SAE J531	50785K603	00000
1/2	1,000 psi @ 72° F	SAE J530, SAE J531	50785K608	00000
3/4	1,000 psi @ 72° F	SAE J530, SAE J531	50785K609	00000