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About Nuts, Materials, and Finishes
More
Low-Strength Steel Hex Nuts
About half the strength of medium-strength steel nuts, these nuts are for light duty fastening applications, such as securing access panels.
Zinc-plated steel nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||
|---|---|---|---|---|---|---|
| 6-40 | 5/16" | 7/64" | ASME B18.6.3 | 100 | 000000000 | 00000 |
18-8 Stainless Steel Hex Nuts
These nuts have good chemical resistance and may be mildly magnetic.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Super-Corrosion-Resistant 316 Stainless Steel Hex Nuts
These nuts have excellent chemical resistance and can be used in saltwater environments. They may be mildly magnetic.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Black-Oxide 316 Stainless Steel | |||||
|---|---|---|---|---|---|
| 6-40 | 5/16" | 7/64" | 1 | 000000000 | 00000 |
Brass Hex Nuts
These nuts are corrosion resistant in wet environments, electrically conductive, and nonmagnetic.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Brass | |||||
|---|---|---|---|---|---|
| 6-40 | 5/16" | 7/64" | 100 | 000000000 | 000000 |
Left-Hand Threaded Low-Strength Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place. About half the strength of medium-strength steel thin nuts, use them for light duty fastening applications, such as securing access panels.
Black-oxide steel nuts have a dark surface color and are mildly corrosion resistant in dry environments. They also meet DIN dimensional standards.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Wd. | Ht. | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Steel—Grade 2 | ||||||
| 6-40 | 5/16 " | 3/32" | ASTM A108 | 1 | 000000000 | 00000 |
Left-Hand Threaded 18-8 Stainless Steel Thin Hex Nuts
These nuts tighten when turned to the left; once fastened, they resist loosening from counterclockwise motion. They have good chemical resistance and may be mildly magnetic. Also known as jam nuts, they are about half the height of standard hex nuts. Use them in low-clearance applications or jam one against another nut to hold it in place.
Black-oxide nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
Left-Hand Threaded Super-Corrosion-Resistant 316 Stainless Steel Thin Hex Nuts
Made of 316 stainless steel for excellent corrosion resistance—including in salt water—these nuts tighten to the left and won’t loosen from counterclockwise motion. For use in low-clearance areas, they’re half the height of standard hex nuts. They can also be jammed against another nut to hold it in place. When used with a standard hex nut, they’re good for fastening most equipment.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Width | Height | Each | |
316 Stainless Steel | ||||
|---|---|---|---|---|
| 6-40 | 5/16" | 3/32" | 000000000 | 00000 |
Left-Hand Threaded Brass Thin Hex Nuts
These nuts tighten to the left and won’t loosen from counterclockwise motion. Made from brass, they resist corrosion, conduct electricity, and are nonmagnetic. They’re half the height of standard hex nuts, so they’re good for use in low-clearance areas. Jam them against another nut to hold them in place. When used with a standard hex nut, they’re suitable for fastening most equipment.
For technical drawings and 3-D models, click on a part number.
| Thread Size | Width | Height | Each | |
Brass | ||||
|---|---|---|---|---|
| 6-40 | 5/16" | 3/32" | 000000000 | 00000 |
18-8 Stainless Steel Nylon-Insert Locknuts
These locknuts have good chemical resistance and may be mildly magnetic. The nylon insert grips the bolt to resist loosening without damaging threads. They're reusable, but their holding power lessens with each use.
Black-oxide stainless steel nuts have a dark surface color.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Cap Nuts
These cap nuts have good chemical resistance and may be mildly magnetic. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | ||||||
| 6-40 | 5/32" | 5/16" | 11/32" | 10 | 000000000 | 000000 |
Super-Corrosion-Resistant 316 Stainless Steel Cap Nuts
These cap nuts have excellent resistance to chemicals and salt water. Also known as acorn nuts, they have a smooth rounded head that covers and protects threads while providing a finished appearance. They may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
316 Stainless Steel | ||||||
| 6-40 | 5/32" | 5/16" | 11/32" | 1 | 000000000 | 00000 |
Low-Strength Steel Cap Nuts
Also known as acorn nuts, these nuts have a smooth rounded head that covers and protects threads while providing a finished appearance. About half the strength of medium-strength steel cap nuts, use them in light duty fastening applications, such as securing access panels.
Zinc-plated steel cap nuts resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||
|---|---|---|---|---|---|---|
| Size | Dp. | Wd. | Ht. | Pkg. Qty. | Pkg. | |
Zinc-Plated Steel | ||||||
| 6-40 | 5/32" | 5/16" | 11/32" | 10 | 000000000 | 00000 |
Inch-to-Inch Male-Female Hex Thread Adapters
Join threads with small diameters to large or course threads to fine with these inch-sized adapters. Use them to position components in an assembly, or to create space between parts. An external hex lets you tighten or loosen them with a wrench.
18-8 stainless steel adapters can be used in wet environments, but chemicals or salt water will cause staining and rust spots.
For areas exposed to salt water or chemicals, 316 stainless steel adapters are the best choice. Only harsh chemicals, such as hydrochloric acid, will cause them to corrode.
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.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Gender | Thread Fit | Hex | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | ||||||||||||||
| 6-40 | 4-40 | 1/4" | 1/4" | Male | Female | Class 2A | Class 2B | 1/4" | 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 6-40 | 6-32 | 1/4" | 7/16" | Male | Female | Class 2A | Class 2B | 3/8" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 6-40 | 8-32 | 1/4" | 7/16" | Male | Female | Class 2A | Class 2B | 3/8" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
316 Stainless Steel | ||||||||||||||
| 6-40 | 4-40 | 1/4" | 1/4" | Male | Female | Class 2A | Class 2B | 1/4" | 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
Inch-to-Metric Male-Female Hex Thread Adapters
Change inch threads to metric with these adapters, or swap metric threads for inch. An external hex lets you tighten or loosen them with a wrench. You can also use them to increase or reduce your thread size, or to create space between parts in an assembly. They meet ASTM specifications, which means the materials they are made from or plated with adhere to specific standards for chemical and physical properties, such as hardness.
18-8 stainless steel adapters can be used in wet environments, but chemicals or salt water will cause staining and rust spots.
For areas exposed to salt water or chemicals, 316 stainless steel adapters are the best choice. Only harsh chemicals, such as hydrochloric acid, will cause them to corrode.
Thread Size | Thread Lg. | Gender | Thread Fit | Hex | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | Pitch (A), mm | (B) | Pitch (B), mm | (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 6-40 | __ | M4 | 0.7 | 1/4" | 1/8" | Male | Female | Class 2A | Class 6H | 1/4" | 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 6-40 | __ | M5 | 0.8 | 1/4" | 1/8" | Male | Female | Class 2A | Class 6H | 1/4" | 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
Metric to Inch | ||||||||||||||||
| M4 | 0.7 | 6-40 | __ | 3/8" | 1/4" | Male | Female | Class 6g | Class 2B | 3/8" | 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M5 | 0.8 | 6-40 | __ | 3/8" | 7/16" | Male | Female | Class 6g | Class 2B | 3/8" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
316 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 6-40 | __ | M4 | 0.7 | 1/4" | 1/8" | Male | Female | Class 2A | Class 6H | 1/4" | 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 6-40 | __ | M5 | 0.8 | 1/4" | 1/8" | Male | Female | Class 2A | Class 6H | 1/4" | 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
Inch-to-Inch Female Hex Thread Adapters
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.
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 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.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Hardness | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||||||
| 4-40 | 6-40 | 9/64" | 9/64" | Class 2B | Class 2B | 5/16" | 1/2" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 6-32 | 6-40 | 9/64" | 9/64" | Class 2B | Class 2B | 5/16" | 1/2" | ASTM A582 | Rockwell B80 | 000000000 | 0000 | 0000 |
| 6-40 | 8-32 | 11/64" | 11/64" | Class 2B | Class 2B | 5/16" | 5/8" | ASTM A582 | Rockwell B80 | 000000000 | 0000 | 0000 |
316 Stainless Steel | ||||||||||||
| 6-40 | 8-32 | 11/64" | 11/64" | Class 2B | Class 2B | 5/16" | 5/8" | ASTM A276 | Rockwell B83 | 000000000 | 0000 | 0000 |
Inch-to-Metric Female Hex Thread Adapters
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.
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 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.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | Each | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Pitch (B), mm | (A) | (B), mm | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||||||||
| 6-40 | M4 | 0.7 | 9/64" | 4 | Class 2B | Class 6H | 11mm | 11mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 6-40 | M5 | 0.8 | 9/64" | 5 | Class 2B | Class 6H | 11mm | 11mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 | 0000 |
316 Stainless Steel | ||||||||||||||
| 6-40 | M4 | 0.7 | 9/64" | 4 | Class 2B | Class 6H | 11mm | 11mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 | 0000 |
| 6-40 | M5 | 0.8 | 9/64" | 5 | Class 2B | Class 6H | 11mm | 11mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 | 0000 |
Inch-to-Inch Male Hex Thread Adapters
Need to join two female-threaded parts, such as coupling nuts, with dissimilar inch thread sizes? Attach them to these adapters and tighten the exterior hex nut for a secure connection. You can also use these adapters to change the gender of a mating part from female to male, increase or decrease the thread size, or convert the threads from fine to coarse (and vice versa). The smaller adapters act as threaded standoffs, positioning and separating circuit boards and other components in assemblies. All of these adapters meet ASTM specifications, which means they’re made from or plated with materials that adhere to specific standards for chemical and physical properties, such as hardness.
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.
Thread Size | Thread Lg. | Thread Fit | Hex | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | ||||||||||||
| 4-40 | 6-40 | 3/16" | 1/4" | Class 2A | Class 2A | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 4-48 | 6-40 | 3/16" | 1/4" | Class 2A | Class 2A | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 6-32 | 6-40 | 1/4" | 1/4" | Class 2A | Class 2A | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 6-40 | 8-32 | 1/4" | 3/8" | Class 2A | Class 2A | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 6-40 | 8-36 | 1/4" | 3/8" | Class 2A | Class 2A | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
Inch-to-Metric Male Hex Thread Adapters
One side inch, one side metric, and a hex in the middle—these handy fasteners connect two female-threaded parts, such as coupling nuts, adapting from inch threads to metric. Tighten with a standard wrench.
You can also use these adapters to change the gender of a mating part or increase or decrease its thread size. The small sizes work as standoffs, positioning and separating circuit boards and other components in assemblies.
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 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.
For technical drawings and 3-D models, click on a part number.
Thread Size | Thread Lg. | Thread Fit | Hex | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | Pitch (B), mm | (A) | (B), mm | (A) | (B) | Size | Lg. | Specifications Met | Tensile Strength, psi | Hardness | Each | |
18-8 Stainless Steel | |||||||||||||
| 6-40 | M4 | 0.7 | 1/4" | 9.5 | Class 2A | Class 6g | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 6-40 | M5 | 0.5 | 1/4" | 9.5 | Class 2A | Class 6g | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 6-40 | M5 | 0.8 | 1/4" | 9.5 | Class 2A | Class 6g | 1/4" | 1/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
316 Stainless Steel | |||||||||||||
| 6-40 | M4 | 0.7 | 1/4" | 9.5 | Class 2A | Class 6g | 1/4" | 1/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 6-40 | M5 | 0.8 | 1/4" | 9.5 | Class 2A | Class 6g | 1/4" | 1/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |