Bar Stock Threaded Pipe Fittings
What are Bar Stock Threaded Pipe Fittings?
Bar Stock Threaded Pipe Fittings are precision-engineered components machined from solid metal bars. These fittings feature threaded ends and are used to connect pipes in small-diameter, high-pressure fluid systems where exceptional strength, dimensional accuracy, and leak resistance are essential.
Unlike forged fittings, bar stock fittings are machined to tight tolerances and are commonly used in instrumentation, hydraulic, and chemical lines where precision and reliability are critical. These fittings are available in a range of configurations such as nipples, plugs, bushings, sockets, and adapters, and are manufactured from carbon steel, stainless steel, duplex, and alloy materials.
Key Features
- Made from Solid Bar Stock – Ensures high strength and dimensional stability under pressure.
- Precision Machined Threads – Provides leak-proof sealing in critical fluid systems.
- Thread Versatility – Available in NPT, BSP, BSPT, and custom metric threads.
- Corrosion & Pressure Resistance – Suitable for harsh environments and high-pressure lines.
- Standards-Compliant Design – Manufactured as per ASME, ASTM, MSS-SP, and DIN norms.
Types of Bar Stock Threaded Fittings
- Hex Nipple
- Hose Nipple
- Barrel Nipple
- Socket
- Plug
- Bushing
Specifications
Mechanical Properties
Chemical Composition
Equivalent Grades
Weight Chart
Specifications
| Parameter | Details |
|---|---|
| Sizes | ⅛" to 4" (DN6 – DN100) |
| Thread Standards | NPT, BSP, BSPT, ISO Metric |
| Pressure Ratings | Class 2000 / 3000 / 6000 |
| Material Options | SS 304 / 316, Carbon Steel, Duplex, Alloy Steel |
| Standards | ASME B16.11, MSS-SP-95, BS 3799 |
| Manufacturing | Precision Machined from Round Bar |
| Property | Typical Value |
|---|---|
| Tensile Strength | 485 – 750 MPa |
| Yield Strength | 250 – 450 MPa |
| Elongation | 20% – 30% |
| Hardness | 125 – 250 HB |
| Operating Temp Range | -46°C to +650°C |
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.08 – 0.35 |
| Manganese (Mn) | 0.60 – 1.65 |
| Silicon (Si) | 0.15 – 0.80 |
| Chromium (Cr) | 16.0 – 20.0 |
| Nickel (Ni) | 8.0 – 14.0 |
| Molybdenum (Mo) | 2.0 – 3.0 (for F316 only) |
| Phosphorus (P) | ≤ 0.035 |
| Sulfur (S) | ≤ 0.040 |
| Iron (Fe) | Balance |
| Standard | Equivalent Grade |
|---|---|
| ASTM | A276, A182 F304 / F316, A105 |
| ASME | B16.11 |
| MSS-SP | SP-95 |
| BS | 3799 |
| DIN | 2950, 2975 |
| Fitting Type | Size (inches) | Weight per 100 pcs (kg) |
|---|---|---|
| Hex Nipple | 1" | 9.80 |
| Hose Nipple | ¾" | 11.20 |
| Barrel Nipple | 2" | 18.50 |
| Hex Plug | 1¼" | 6.50 |
| Socket | 1" | 10.30 |
| Bushing | 1½" x 1" | 7.40 |
Applications of Bar Stock Threaded Pipe Fittings
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What is the advantage of bar stock over forged fittings?
Bar stock fittings are machined to tighter tolerances and are ideal for applications where precision and strength are critical.
Are custom sizes or threads available?
Yes. We offer custom machining for unique dimensions and thread types based on client specifications.
Can bar stock fittings be used in corrosive environments?
Absolutely. When made from SS 316, Duplex, or special alloys, these fittings perform reliably in harsh media.
What certifications do these fittings comply with?
Our bar stock fittings conform to ASTM, ASME, DIN, and MSS-SP standards, with MTC and optional third-party inspection.
