Hex Nipple Pipe Fitting: High-Integrity Male-to-Male Connector

Create a strong, reliable connection between two female-threaded ports. The Stark Hex Nipple is engineered to serve as a robust male-to-male pipe fitting for high-pressure industrial systems. Machined from a single piece of forged 316/316L stainless steel, it provides superior strength and corrosion resistance. Its precision-machined threads ensure a leak-tight seal, making it the ideal choice for connecting valves, instruments, and other components in demanding process environments.

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✓ One-Piece Forged Body| ✓ Precision-Machined Threads| ✓ High-Pressure Rated

🔧 Configure Your Hex Nipple in Seconds

Find your required fitting by selecting the thread type and size. Reducing configurations is also available.

1. Select Your Thread Type:

○ NPT (High-Pressure Process Standard)
○ BSPT (R) (ISO Tapered - General Industrial)
○ BSPP (G) (Parallel - Leak-Free Soft Seal)
○ Metric / SAE (OEM & Hydraulic Specialty)

2. Select Your Thread Size

🔥 Most Popular Sizes (In Stock - Same Day Shipping)

1/4" x 1/4" NPT	1/2" x 1/2" NPT	3/4" x 3/4" NPT	1" x 1" NPT
SS-THN-MN4	SS-THN-MN8	SS-THN-MN12	SS-THN-MN16
[Add to Quote]	[Add to Quote]	[Add to Quote]	[Add to Quote]

Part Number Format: [Material]-THN-[Thread1]-[Thread2] (e.g., INC625-THN-MN4-MN2 for a reducing nipple)

(THN = Hex Nipple)

🛠 The Engineering Advantage

Superior Strength with One-Piece Forging: Unlike fittings machined from standard bar stock, our hex nipples are made from forged 316L stainless steel. This provides a superior grain structure that offers higher strength and resistance to cracking under high installation torque and system pressure.

Precision-Machined Threads for a Perfect Seal: Our NPT and BSPT tapered threads are machined to exacting ASME and ISO standards. This ensures perfect thread engagement and a secure, leak-free seal when properly installed with thread sealant.

Heavy-Duty Hex for Secure Installation: The central hexagonal section is generously sized to provide a secure, non-slip grip for wrenches, allowing for proper torque application without the risk of rounding or damaging the fitting.

Guaranteed Material Integrity: Every Stark pipe fitting comes with full material traceability. We provide a Material Test Report (MTR) to EN 10204 3.1 and PMI verification as standard, giving you absolute confidence in the material you are installing.

📈 Technical Specifications

Feature	Stark Standard Specification
Body Material	Forged 316/316L Stainless Steel
Thread Types	NPT, BSPT (R), BSPP (G), Metric / SAE
Pressure Rating	Up to 10,000 PSI (689 bar), varies by size
Compliance	MTR to EN 10204 3.1 & PMI Verified
Configurations	Straight (Same Size) and Reducing

🎯 Why Choose a Stark Hex Nipple? A Head-to-Head Comparison

Feature	Standard Commodity Nipples	The Stark Forged Hex Nipple
Construction	⚠️ Often machined from bar stock (weaker)	✅ One-Piece Forged Body (Superior Strength)
Thread Quality	⚠️ Inconsistent, prone to leaks	✅ Precision-Machined & Gauged (Leak-Free Seal)
Wrench Grip	❌ Thin or poorly defined hex	✅ Heavy-Duty Hex (Secure, High-Torque Installation)
Material Traceability	❌ None	✅ Full MTR + PMI Verification with Every Order

📌 Targeted Application Support

Valve & Instrument Manifolds: Securely connect block valves, gauges, and transmitters in a compact layout.

Process Line Connections: Join two sections of female-threaded pipe or connect equipment in-line.

Hydraulic Power Units: Provides robust connection points for pumps, filters, and reservoirs.

Test Benches: Create reliable, high-pressure connections for testing and calibration equipment.

❓ Frequently Asked Questions (FAQ)

Q1: What is the difference between a hex nipple and a close nipple?

A Hex Nipple has a hexagonal section in the middle for a wrench to grip. A Close Nipple has no unthreaded section in the middle, meaning the two threaded ends are almost touching. Hex nipples are strongly recommended for high-pressure applications as they allow for proper, high-torque installation without damaging the threads.

Q2: Do I need to use thread sealant (like PTFE tape) on these fittings?

Yes. For all tapered thread types (NPT and BSPT), a high-quality thread sealant is required to fill the microscopic gaps in the threads and ensure a gas-tight, leak-free seal.

Q3: What is the pressure rating of your hex nipples?

The pressure rating varies by size and thread type, but our standard 316SS hex nipples are generally rated for pressures up to 10,000 PSI. Please consult the technical datasheet for the specific rating of the size you require.

Q4: Do you offer reducing hex nipples (e.g., 1/2" NPT to 1/4" NPT)?

Yes. We offer a wide range of reducing configurations. This allows you to connect components with different thread sizes without needing an additional bushing, which reduces potential leak paths.

📦 Complete Size Chart

Need a custom material or thread type?[Request Custom Configuration]

💬 Still Have Questions?

Our engineering team is ready to assist with technical selection, system design, or material recommendations.

[Chat with an Engineer] [Email: sales@starkvalve.com] [Call: +86-13917221881]

🔒 Disclaimer

Swagelok® and Parker® are registered trademarks of their respective holders. Stark is not affiliated with, endorsed by, or sponsored by these companies. Part numbers and brand names are provided for cross-reference and compatibility purposes only.