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Coupling Nut Profile
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Round Coupling Nuts
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Less bulky than hex coupling nuts, these have a smooth, round body that fits in tight spots. Their finished appearance makes them a common choice for decorative applications. Tighten by hand, or use soft-jaw pliers to avoid marring the outside surface. Also known as extension nuts, they are commonly used to connect lengths of threaded rod and join threaded parts.
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Certificates with a traceable lot number are available for these products. Download certificates from ORDER HISTORY after your order ships.
Corrosion-Resistant Stainless Steel
Each | |||||||||
|---|---|---|---|---|---|---|---|---|---|
Thread Size | Lg. | OD | Threading | Certificate Type | 1-9 | 10-Up | |||
18-8 Stainless Steel | |||||||||
| 3/8"-32 | 1" | 31/64" | Fully Threaded | Material Certificate | 90202A225 | 000000 | 000000 | ||
Inch-to-Inch Female Hex Thread Adapters
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Connect two differently sized male-threaded parts, such as threaded rods, and tighten with a standard wrench. The threads on these adapters have various sizes and spacing, so you can increase or decrease thread size or adapt from coarse to fine threading. You can also use them to change the gender of a connection from male to female. Small adapters can work as threaded standoffs, which position and separate circuit boards and other components in assemblies.
Aluminum—Aluminum adapters are about one third of the weight of steel adapters and resist corrosion in wet environments.
18-8 Stainless Steel—18-8 stainless steel adapters withstand wet environments but will corrode when exposed to salt water and other chloride solutions.
316 Stainless Steel—316 stainless steel adapters are ideal in wet environments and will not corrode when exposed to salt water or harsh chemicals.
ASTM A276, ASTM A582, and ASTM B211—Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
Thread Lg. | Thread Fit | Hex | Each | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size (A) | Thread Size (B) | (A) | (B) | (A) | (B) | Size | Length | Specs. Met | Tensile Strength, psi | Hardness | Certificate Form | Certificate Type | 1-9 | 10-Up | |||
Aluminum | |||||||||||||||||
| 3/8"-16 | 3/8"-32 | 3/8" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1 1/4" | ASTM B211 | 45,000 | Rockwell B56 | — | — | 91072A287 | 00000 | 00000 | ||
| 3/8"-32 | 1/2"-13 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM B211 | 45,000 | Rockwell B56 | — | — | 91072A297 | 0000 | 0000 | ||
| 3/8"-32 | 1/2"-20 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91072A298 | 0000 | 0000 | ||
| 3/8"-32 | 5/8"-11 | 3/8" | 5/8" | Unified Standard Class 2B | Unified Standard Class 2B | 13/16" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91072A299 | 00000 | 00000 | ||
18-8 Stainless Steel | |||||||||||||||||
| 1/4"-20 | 3/8"-32 | 1/2" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A125 | 0000 | 0000 | ||
| 1/4"-28 | 3/8"-32 | 1/4" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A134 | 00000 | 0000 | ||
| 1/4"-32 | 3/8"-32 | 1/4" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A143 | 00000 | 0000 | ||
| 5/16"-18 | 3/8"-32 | 5/16" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A149 | 00000 | 0000 | ||
| 5/16"-24 | 3/8"-32 | 5/16" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91072A155 | 00000 | 0000 | ||
| 5/16"-32 | 3/8"-32 | 5/16" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A161 | 00000 | 0000 | ||
| 3/8"-16 | 3/8"-32 | 3/8" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1 1/4" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91072A165 | 00000 | 0000 | ||
| 3/8"-24 | 3/8"-32 | 3/8" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1 1/4" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91072A168 | 00000 | 0000 | ||
| 3/8"-32 | 1/2"-13 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91072A174 | 00000 | 0000 | ||
| 3/8"-32 | 1/2"-20 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A175 | 00000 | 0000 | ||
| 3/8"-32 | 1/2"-28 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A176 | 00000 | 0000 | ||
| 3/8"-32 | 5/8"-11 | 3/8" | 5/8" | Unified Standard Class 2B | Unified Standard Class 2B | 13/16" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91072A177 | 00000 | 00000 | ||
| 3/8"-32 | 3/4"-10 | 3/8" | 3/4" | Unified Standard Class 2B | Unified Standard Class 2B | 1" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91072A178 | 00000 | 00000 | ||
316 Stainless Steel | |||||||||||||||||
| 1/4"-20 | 3/8"-32 | 1/2" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91072A209 | 00000 | 0000 | ||
| 5/16"-18 | 3/8"-32 | 5/16" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91072A226 | 00000 | 00000 | ||
| 3/8"-16 | 3/8"-32 | 3/8" | 3/8" | Unified Standard Class 2B | Unified Standard Class 2B | 1/2" | 1 1/4" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91072A238 | 00000 | 00000 | ||
| 3/8"-32 | 1/2"-13 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91072A248 | 00000 | 00000 | ||
| 3/8"-32 | 1/2"-20 | 3/8" | 1/2" | Unified Standard Class 2B | Unified Standard Class 2B | 5/8" | 1 1/4" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91072A249 | 00000 | 00000 | ||
| 3/8"-32 | 5/8"-11 | 3/8" | 5/8" | Unified Standard Class 2B | Unified Standard Class 2B | 13/16" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91072A250 | 00000 | 00000 | ||
| 3/8"-32 | 3/4"-10 | 3/8" | 3/4" | Unified Standard Class 2B | Unified Standard Class 2B | 1" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | — | — | 91072A251 | 00000 | 00000 | ||
Inch-to-Metric Female Hex Thread Adapters
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Adapt threaded rods from inch to metric. These adapters connect two male-threaded fasteners, so you can change the gender of a mating part or increase or decrease its thread size. The hex-shaped body fits into the head of a standard wrench. Small adapters can also be used as standoffs, positioning and separating circuit boards and other components in assemblies.
Aluminum—At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
18-8 Stainless Steel—18-8 stainless steel adapters resist corrosion caused by water. They're good for wet and damp environments but will corrode when exposed to salt water and other chloride solutions.
316 Stainless Steel—316 stainless steel adapters have the best corrosion resistance. They stand up to wet environments, just like 18-8 stainless steel adapters, but unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and harsh chemicals.
ASTM A276, ASTM A582, and ASTM B211—Adapters that meet ASTM specifications are made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
Thread Lg. | Thread Fit | Hex, mm | Each | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size (A) | Thread Size (B) | (A) | (B), mm | (A) | (B) | Size | Length | Specs. Met | Tensile Strength, psi | Hardness | Certificate Form | Certificate Type | 1-9 | 10-Up | |||
Aluminum | |||||||||||||||||
| 3/8"-32 | M6 x 1 mm | 3/8" | 6 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91079A160 | 000000 | 000000 | ||
| 3/8"-32 | M8 x 1.25 mm | 3/8" | 8 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91079A161 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1.25 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91079A162 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1.5 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91079A163 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.25 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91079A164 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.75 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91079A165 | 00000 | 00000 | ||
18-8 Stainless Steel | |||||||||||||||||
| 3/8"-32 | M6 x 0.75 mm | 3/8" | 6 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A813 | 00000 | 00000 | ||
| 3/8"-32 | M6 x 1 mm | 3/8" | 6 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A814 | 00000 | 00000 | ||
| 3/8"-32 | M8 x 1 mm | 3/8" | 8 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A815 | 00000 | 00000 | ||
| 3/8"-32 | M8 x 1.25 mm | 3/8" | 8 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A816 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | — | — | 98434A817 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1.25 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A818 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1.5 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A819 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.25 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A820 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.5 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A821 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.75 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 98434A822 | 00000 | 00000 | ||
316 Stainless Steel | |||||||||||||||||
| 3/8"-32 | M6 x 1 mm | 3/8" | 6 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A186 | 00000 | 00000 | ||
| 3/8"-32 | M8 x 1 mm | 3/8" | 8 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A187 | 00000 | 00000 | ||
| 3/8"-32 | M8 x 1.25 mm | 3/8" | 8 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A188 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A189 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1.25 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A190 | 00000 | 00000 | ||
| 3/8"-32 | M10 x 1.5 mm | 3/8" | 10 | Unified Standard Class 2B | Metric Class 6H | 16 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A191 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.25 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A192 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.5 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A193 | 00000 | 00000 | ||
| 3/8"-32 | M12 x 1.75 mm | 3/8" | 12 | Unified Standard Class 2B | Metric Class 6H | 18 | 38 | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91076A194 | 00000 | 00000 | ||
