Investment Casting Hex Nipple
What is an Investment Casting Hex Nipple?
A Hex Nipple is a straight-line connector used to join two female-end components in a pipeline. It features male ends on both sides and a hexagonal body in the center for easy tightening with a wrench.
Manufactured through investment casting, hex nipples offer excellent surface finish, precise thread alignment, and high-pressure performance. They are widely used in instrumentation panels, chemical piping, food-grade lines, and compact piping assemblies.
Key Features
- Male-to-Male Connection – Connects two female-threaded components inline.
- Hex Center Section – Allows easy tightening using standard tools.
- Strong & Corrosion-Resistant – Ideal for aggressive or sanitary environments.
- Available in BSP/NPT Threads or Weld Ends – Flexible configurations.
- Fine Surface Finish via Investment Casting – Ensures tight sealing and reliability.
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ⅛" to 4" |
| End Types | NPT / BSP Threads, Socket Weld, Butt Weld |
| Material Options | SS 304, SS 316, CF8M, Duplex |
| Standards | ASME B16.11, ISO 4144, MSS-SP-95, DIN 2950 |
| Manufacturing | Investment Cast + CNC Finished |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 750 MPa |
| Yield Strength | 250 – 450 MPa |
| Elongation | 20% – 30% |
| Hardness | 125 – 250 HB |
| Temperature Range | -46°C to +600°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 18.0 – 20.0 |
| Nickel (Ni) | 8.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 (316/CF8M) |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grades |
|---|---|
| ASTM | A351 CF8 / CF8M, A743 / A744 |
| ASME | B16.11 |
| MSS-SP | SP-95 |
| DIN | 2950 / 2955 |
| ISO | ISO 4144 |
| Nipple Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| Hex Nipple | ½" | 7.80 |
| Hex Nipple | 1" | 9.90 |
| Hex Nipple | 2" | 16.20 |
Applications of Investment Casting Hex Nipple
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What does the hex design help with?
It allows easy wrenching and torque control, especially in tight spaces.
Can you supply custom thread combinations?
Yes. BSP x NPT or mixed thread ends can be made to order.
Are hex nipples corrosion-resistant?
Yes. We offer SS 316, CF8M, and Duplex grades with optional mirror polishing.
Can hex nipples be used in high-pressure applications?
Absolutely. Investment cast nipples are rated for pressure class 3000/6000, based on size and wall thickness.
