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ALT: Close-up photograph focusing on the tapered threads of several steel NPT pipe fittings (e.g., elbows, tees) from Delphi Fittings.

Steel NPT & NPTF Pipe Fittings

Reliable Tapered Thread Fittings for Secure Hydraulic Connections.

Dependable NPT/NPTF Fittings for Hydraulic Systems

Delphi Fittings manufactures a comprehensive range of National Pipe Taper (NPT) and National Pipe Taper Fuel (NPTF / Dryseal) fittings in high-quality carbon steel. Known for their tapered threads that create a strong mechanical seal (NPT often requires sealant, NPTF designed for metal-to-metal seal), these fittings are widely used in hydraulic and pneumatic systems across various industries, particularly in North America. Our NPT/NPTF fittings conform to relevant industry standards like ANSI B1.20.1 and SAE J476, ensuring reliable performance and interchangeability.

Browse our standard NPT/NPTF configurations below. For specific sizes, configurations not listed, or wholesale inquiries, please contact us directly or consult our catalog in the Resources section. All fittings undergo our rigorous Quality Assurance process.

NPT / NPTF Pipe Fitting Catalog

NPTF Pipe Female Coupling

Part #: 5000

Connects two male NPT/NPTF threaded pipes or fittings of the same size. Female NPTF threads.

NPTF Pipe Male Hex Nipple

Part #: 5404

Connects two female NPT/NPTF ports. Hexagonal body for wrench tightening. Male NPTF threads.

NPT Pipe Seamless Male Nipple

Part #: 5404N

Seamless construction nipple for connecting two female NPT ports. Male NPT threads.

NPT Hexagon Pipe Male Long Nipple

Part #: 5404LN

An extended length hex nipple for connecting female NPT ports with added reach. Male NPT threads.

NPTF Pipe Internal External Connector

Part #: 5405

Adapter fitting, typically male NPTF x female NPTF, for connecting different components.

NPTF Pipe Hex Reducer Bushing

Part #: 5406

Reduces port size. Male NPTF thread externally, smaller female NPTF thread internally. Hex head.

NPTF Pipe Hex Socket Plug

Part #: 5406-HP

Seals a female NPTF port. Features an internal hex (Allen) socket for flush installation.

NPTF Pipe Hex Head Plug

Part #: 5406-P

Seals a female NPTF port. Features an external hex head for easy wrench installation/removal.

NPTF Pipe Hollow Hex Head Plug

Part #: 5406-P-Hollow

Similar to a hex head plug but potentially hollow for specific applications like drainage or venting.

NPTF Pipe Square Head Plug

Part #: 5406-SHP

Seals a female NPTF port. Features an external square head for specific tool engagement.

NPTF Pipe Cap

Part #: 5406C

Seals the end of a male NPT/NPTF threaded pipe or fitting. Female NPTF threads.

NPTF Pipe 90° Male Elbow

Part #: 5500

Changes flow direction by 90°. Connects two female NPTF ports. Male NPTF threads both ends.

NPTF Pipe 45° Male Elbow

Part #: 5501

Changes flow direction by 45°. Connects two female NPTF ports. Male NPTF threads both ends.

NPTF Pipe 90° Street Elbow

Part #: 5502

Changes flow direction by 90°. Connects male NPTF to female NPTF port. One male, one female NPTF end.

NPTF Pipe 45° Street Elbow

Part #: 5503

Changes flow direction by 45°. Connects male NPTF to female NPTF port. One male, one female NPTF end.

NPTF Pipe Female 90° Elbow

Part #: 5504

Changes flow direction by 90°. Connects two male NPTF pipes/fittings. Female NPTF threads both ends.

NPTF Pipe 45° Female Elbow

Part #: 5505

Changes flow direction by 45°. Connects two male NPTF pipes/fittings. Female NPTF threads both ends.

NPTF Pipe Male Tee

Part #: 5600

Creates a 90° branch from a main line. Connects three female NPTF ports. All ends male NPTF.

NPTF Female Pipe Branch Tee

Part #: 5601

Tee fitting with female NPTF threads on the branch and potentially male/female on the run ends.

NPTF Pipe Street Tee

Part #: 5602

Tee fitting typically featuring one male NPTF end and two female NPTF ends for versatile connections.

NPTF Pipe Run Tee

Part #: 5603

Tee fitting where the branch connection might differ from the main run connections.

NPTF Male Pipe Branch Tee

Part #: 5604

Tee fitting with a male NPTF thread on the 90° branch connection.

NPTF Pipe Branch Tee

Part #: 5605

A standard tee configuration for branching hydraulic lines with NPTF connections.

NPTF Pipe Female Cross

Part #: 5652

Connects four male NPTF threaded pipes or fittings at 90° angles. All ends female NPTF.

NPTF Pipe Cross

Part #: 5655

Connects four female NPTF threaded ports at 90° angles. All ends male NPTF.

NPTF Pipe Male x Pipe Swivel Male 90° Elbow

Part #: 5700

90° elbow featuring one standard male NPTF end and one male NPTF end with a swivel nut for easier installation.

37° JIC Male to NPTF Male Pipe Swivel 90° Elbow

Part #: 5701

Adapter elbow connecting a male JIC fitting to a female NPTF port at 90°, with a swivel NPTF end.

NPTF Pipe Female x Pipe Swivel Male 90° Elbow

Part #: 5702

90° elbow featuring one female NPTF end and one male NPTF end with a swivel nut for easier installation.

Need Specific NPT/NPTF Fittings?

This listing showcases common configurations. Contact Delphi Fittings for availability of specific sizes (e.g., 1/4", 1/2", 3/4", 1"), materials, or for competitive quotes on wholesale orders.

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