About Nuts, Materials, and Finishes
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About Threaded Studs and Rods
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18-8 Stainless Steel Coupling Nuts
These coupling nuts have good chemical resistance and may be mildly magnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size  | Lg. | Wd. | 1-9 | 10-Up | |
18-8 Stainless Steel | |||||
| 7/16"-20 | 1 1/4" | 9/16" | 000000000 | 00000 | 00000 |
Super-Corrosion-Resistant 316 Stainless Steel Coupling Nuts
These coupling nuts have excellent resistance to chemicals and salt water. Also known as extension nuts, use them to connect and extend threaded rods. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
316 Stainless Steel | |||||
| 7/16"-20 | 1 1/4" | 9/16" | 000000000 | 00000 | 00000 |
Low-Strength Steel Coupling Nuts
Also known as extension nuts, use these to connect and extend threaded rods. They're about half the strength of medium-strength steel coupling nuts for use in light duty fastening applications.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Medium-Strength Steel Coupling Nuts—Grade 5
Also known as extension nuts, use these to connect and extend threaded rods.
Zinc-plated steel coupling nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Zinc-Plated Steel—Grade 5 | |||||
| 7/16"-20 | 1 3/4" | 5/8" | 000000000 | 00000 | 00000 |
High-Strength Steel Coupling Nuts—Grade 8
Also known as extension nuts, use these to connect and extend threaded rods. Made from Grade 8 steel, they're about 25% stronger than medium-strength steel coupling nuts. A zinc plating provides corrosion resistance in wet environments.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Zinc-Plated Steel—Grade 8 | |||||
| 7/16"-20 | 1 3/4" | 3/4" | 000000000 | 000000 | 000000 |
Brass Coupling Nuts
These coupling nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic. Also known as extension nuts, use them to connect and extend threaded rods.
For technical drawings and 3-D models, click on a part number.
Each | |||||
|---|---|---|---|---|---|
| Thread Size | Lg. | Wd. | 1-9 | 10-Up | |
Brass | |||||
| 7/16"-20 | 1 1/4" | 9/16" | 000000000 | 000000 | 00000 |
Stainless Steel Extra-Long Coupling Nuts
These coupling nuts have good chemical resistance. Also known as sleeve nuts, they're at least twice the length of standard coupling nuts to provide more room to connect and extend long lengths of threaded rods.
For technical drawings and 3-D models, click on a part number.
Steel High Hex Nuts
With a height that is taller than standard hex nuts, these nuts provide a larger gripping area for installation with a wrench.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Steel—Grade 8 | ||||||
|---|---|---|---|---|---|---|
| 7/16"-20 | 5/8" | 39/64" | SAE J995 | 25 | 000000000 | 000000 |
Hex Drive Threaded Rods
A hex drive on one end allows these rods to be turned with a hex key for ease of installation. Use them to connect parts with coarse threads to parts with fine threads. They're high-strength black-oxide steel and corrosion resistant in dry environments.
Rods with an unthreaded tip thread into nuts more easily, reducing the chance of damaging threads.
For technical drawings and 3-D models, click on a part number.
Thread (A) | Thread (B) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Size | Lg. | Size | Lg. | Lg. | Unthreaded Tip Lg. | Drive Size | Tensile Strength, psi | Hardness | Each | |
Black-Oxide Alloy Steel | ||||||||||
Threaded Tip | ||||||||||
| 7/16"-14 | 7/16" | 7/16"-20 | 1" | 2" | __ | 3/32" | 150,000 | Rockwell C39 | 000000000 | 00000 |
| 7/16"-14 | 3/4" | 7/16"-20 | 1" | 2 1/2" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 3/4" | 7/16"-20 | 1" | 2 3/4" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 3/4" | 7/16"-20 | 1" | 3 1/4" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 1" | 7/16"-20 | 1" | 3 1/2" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 1" | 7/16"-20 | 1" | 3 3/4" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 1" | 7/16"-20 | 1" | 4" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 1" | 7/16"-20 | 1" | 4 1/2" | __ | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
Unthreaded Tip | ||||||||||
| 7/16"-14 | 1 3/8" | 7/16"-20 | 1" | 3" | 3/8" | 3/16" | 150,000 | Rockwell C39 | 000000000 | 0000 |
| 7/16"-14 | 1 1/2" | 7/16"-20 | 1 1/8" | 3 3/4" | 3/8" | 3/32" | 150,000 | Rockwell C39 | 000000000 | 00000 |
| 7/16"-14 | 1 1/2" | 7/16"-20 | 1 1/8" | 5 1/2" | 3/8" | 3/32" | 150,000 | Rockwell C39 | 000000000 | 00000 |
| 7/16"-14 | 1 1/2" | 7/16"-20 | 1 1/8" | 5 7/8" | 3/8" | 3/32" | 150,000 | Rockwell C39 | 000000000 | 00000 |
| 7/16"-14 | 1 1/2" | 7/16"-20 | 1 1/8" | 7" | 3/8" | 3/32" | 150,000 | Rockwell C39 | 000000000 | 00000 |
| 7/16"-14 | 1 1/2" | 7/16"-20 | 1 1/8" | 8" | 3/8" | 3/32" | 150,000 | Rockwell C39 | 000000000 | 00000 |
Threaded Adapters for Pullers
Use adapters on the ends of forcing screws and face-grip puller legs when pulling shafts, bearing caps, and pinions.
| Thread Size | Gender | Each | |
| 7/16"-20 × 5/8"-18 | Male × Female | 000000 | 000000 |