Bar Stock
Threaded Socket
What is a Bar Stock Threaded Socket?
A Threaded Socket, also known as a Threaded Coupling, is a bar stock fitting designed to connect two male-threaded pipes in a straight-line configuration. It features female threads on both ends and is widely used in low- to high-pressure piping systems where welding is not feasible or desired.
Threaded sockets are available in full, half, and reducing types and are commonly used in plumbing, hydraulic circuits, compressed air systems, and oil & gas installations.
Key Features
Leak-Proof
Jointing
Durable
Construction
Easy Installation
& Removal
Wide
Compatibility
Corrosion
Resistant
Specifications
| Specification Category | Parameter / Feature | Details / Options |
|---|---|---|
| Size Range | Nominal Size | ½” to 4″ (custom sizes available) |
| Pressure Ratings | ANSI / ASME Class | Class 150, 300, 600, 900, 1500, 2500 |
| PN Ratings | PN6, PN10, PN16, PN25, PN40, PN64 | |
| Product Types | Bar Stock Threaded Fitting | Threaded Socket, Female Coupling |
| Material Options | Carbon Steel | ASTM A105, ASTM A350 LF2 |
| Stainless Steel | ASTM A182 F304, F316, F321 | |
| Alloy Steel | ASTM A182 F5, F9, F11, F22 | |
| Other Alloys | Monel, Inconel, Titanium | |
| Standards & Certifications | ASTM | ASTM A182, ASTM A105 |
| ASME / ANSI | ASME B1.20.1, ASME B16.11 | |
| MSS | MSS SP-79, MSS SP-83 | |
| European Standards | EN 10241, EN 10226 | |
| Certifications | ISO 9001, PED 2014/68/EU, NACE MR0175, CE Marked | |
| Design Features | Thread Type | NPT, BSPT, BSPP |
| Wall Thickness | As per ASTM / ASME standards, schedule 40, 80 | |
| End Connections | Female Threaded | |
| Pressure Class | 2000#, 3000#, 6000#, 9000# | |
| Tolerance | Thread Tolerance | As per ASME B1.20.1 / ISO 7-1 |
| Coating & Surface Finish | Anti-Corrosion Coating | Zinc Plated, Passivation, Nickel Plating |
| Surface Finish | Mill Finish, Polished, Pickled, Bead Blasted | |
| Testing & Inspection | Pressure Testing | Hydrostatic, Pneumatic |
| Non-Destructive Testing | Dye Penetrant (DPT), Magnetic Particle (MPI) | |
| Destructive Testing | Tensile, Hardness, Torque Test |
Dimensions
| Fitting Type | Nominal Size (NPS) | Outside Diameter (OD) | Thread Depth (T) | Socket Depth (S) | Thread Type | Weight per Piece |
|---|---|---|---|---|---|---|
| Threaded Socket | ½” | 21.3 mm | 20 mm | 25 mm | NPT / BSPT | 120g |
| Threaded Socket | ¾” | 26.7 mm | 22 mm | 28 mm | NPT / BSPT | 180g |
| Threaded Socket | 1″ | 33.4 mm | 25 mm | 32 mm | NPT / BSPT | 250g |
| Threaded Socket | 1½” | 48.3 mm | 28 mm | 40 mm | NPT / BSPT | 400g |
| Threaded Socket | 2″ | 60.3 mm | 30 mm | 45 mm | NPT / BSPT | 600g |
| Threaded Socket | 2½” | 73.0 mm | 35 mm | 50 mm | NPT / BSPT | 850g |
| Threaded Socket | 3″ | 88.9 mm | 40 mm | 60 mm | NPT / BSPT | 1.2kg |
| Threaded Socket | 4″ | 114.3 mm | 50 mm | 70 mm | NPT / BSPT | 1.6kg |
Mechanical Properties
| Property | Value | Unit / Standard |
|---|---|---|
| Tensile Strength | 485 – 750 | MPa (Carbon Steel, Stainless Steel, Alloy Steel) |
| Yield Strength | 170 – 450 | MPa |
| Hardness | 120 – 200 | HB (Brinell) |
| Elongation | ≥ 20 – 30 | % |
| Density | 7.8 – 8.0 | g/cm³ (Carbon Steel), 7.9 – 8.0 g/cm³ (Stainless Steel) |
| Impact Toughness | ≥ 27 – 70 | J (Charpy, grade-dependent) |
| Modulus of Elasticity (E) | ~200 | GPa |
| Fatigue Strength | 250 – 450 | MPa |
| Corrosion Resistance | Good to Excellent (SS > CS > Alloy Steel) | – |
| Thermal Conductivity | 15 – 50 | W/m·K |
| Coefficient of Thermal Expansion | 11 – 17 ×10⁻⁶ | /°C |
| Yield Ratio (YS/UTS) | 0.40 – 0.65 | – |
| Poisson’s Ratio | 0.27 – 0.30 | – |
| Brinell Hardness Range | 120 – 200 | HB |
| Surface Finish | Mill Finish, Pickled, Polished, Bead Blasted | – |
| Thread Type | NPT / BSPT | – |
| End Connections | Female Threaded | – |
| Operating Temperature Range | -46 to 600 | °C (material-dependent) |
| Pressure Rating | Class 150, 300, 600, 900, 1500, 2500 | ASME B1.20.1 / ASME B16.11 |
Chemical Composition
| Element | SS 304 | SS 304L | SS 316 | SS 316L |
|---|---|---|---|---|
| Chromium (Cr) | 18.0 – 20.0 | 18.0 – 20.0 | 16.0 – 18.0 | 16.0 – 18.0 |
| Nickel (Ni) | 8.0 – 10.5 | 8.0 – 12.0 | 10.0 – 14.0 | 10.0 – 14.0 |
| Carbon (C) | ≤ 0.08 | ≤ 0.03 | ≤ 0.08 | ≤ 0.03 |
| Manganese (Mn) | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 | ≤ 2.00 |
| Silicon (Si) | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 | ≤ 1.00 |
| Phosphorus (P) | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 | ≤ 0.030 |
| Iron (Fe) | Balance | Balance | Balance | Balance |
| Molybdenum (Mo) | — | — | 2.0 – 3.0 | 2.0 – 3.0 |
Applications of Bar Stock Threaded Sockets
Construction &
Infrastructure
Automotive & Heavy
Equipment
Manufacturing &
Fabrication
Medical & Laboratory
Equipment
Electrical &
Electronics Assembly
Oil, Gas & Petrochemical
Installations
Do you have questions?
What’s the difference between a full and half socket?
Can you supply reducing sockets?
Are threaded sockets reusable?
Do you provide test certificates?
