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About Hex Head Screws and Bolts
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About Socket Head Screws
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About Rounded Head Screws
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Alloy Steel Socket Head Screws
With a tensile strength of 170,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Length is measured from under the head.
Black-oxide steel screws are mildly corrosion resistant in dry environments. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance. They are not compatible with coarse threads.
Screws that meet ASTM A574, ASTM A574M, and ISO 898-1 comply with specifications and testing requirements for material quality.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
1/4"-32 | ||||||||||
Black-Oxide Alloy Steel | ||||||||||
| 5/8" | Fully Threaded | Extra Fine | 3/8" | 1/4" | 3/16" | 170,000 | ASTM A574 | 5 | 000000000 | 000000 |
| 3/4" | Fully Threaded | Extra Fine | 3/8" | 1/4" | 3/16" | 170,000 | ASTM A574 | 5 | 000000000 | 00000 |
| 1" | Fully Threaded | Extra Fine | 3/8" | 1/4" | 3/16" | 170,000 | ASTM A574 | 5 | 000000000 | 00000 |
| 1 1/2" | Fully Threaded | Extra Fine | 3/8" | 1/4" | 3/16" | 170,000 | ASTM A574 | 5 | 000000000 | 00000 |
18-8 Stainless Steel Button Head Hex Drive Screws
18-8 stainless steel button head screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
For technical drawings and 3-D models, click on a part number.
High-Strength Grade 8 Steel Hex Head Screws
Made from Grade 8 steel, these screws can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Grade 8 steel hex head screws are marked with six radial lines. Length is measured from under the head.
Zinc yellow-chromate plated steel screws resist corrosion in wet environments.
Match the thread spacing of mating components. Fine and extra-fine threads are closely spaced to prevent loosening from vibration; the finer the thread, the better the resistance.
Screws that meet ASTM A354BD or SAE J429 comply with specifications and testing requirements for material quality.
Screws that meet ASME B18.2.1 or ASME B18.6.3 comply with specifications for dimensional standards.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Wd. | Ht. | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Grade 8 Steel | ||||||||||
1/4"-32 | ||||||||||
| 3/4" | Fully Threaded | __ | Extra Fine | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Extra Fine | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 1 1/4" | Partially Threaded | 3/4" | Extra Fine | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 1 1/2" | Partially Threaded | 3/4" | Extra Fine | 7/16" | 5/32" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
Inch-to-Inch Male-Female Hex Thread Adapters
Change thread sizes or types, such as fine to coarse threads, on parts without changing gender. These adapters can also be used as standoffs to position components in assemblies and to create space between parts. They have an external hex, so you can tighten them with a wrench.
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 adapters resist corrosion in wet environments but will corrode when exposed to salt water and chemicals. They may be mildly magnetic. 316 stainless steel adapters are for use in wet environments and have the best corrosion resistance. Unlike 18-8 stainless steel adapters, they resist corrosion caused by salt water and chemicals. They may be mildly magnetic.
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 | |
Aluminum | ||||||||||||||
| 1/4"-32 | 3/8"-16 | 1/2" | 9/16" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-13 | 1/2" | 3/4" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
18-8 Stainless Steel | ||||||||||||||
| 10-24 | 1/4"-32 | 3/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 10-32 | 1/4"-32 | 3/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-20 | 1/4"-32 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-28 | 1/4"-32 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 10-24 | 5/8" | 7/16" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 10-32 | 1/2" | 9/32" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 1/4"-20 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 1/4"-28 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 5/16"-18 | 1/2" | 15/32" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 5/16"-24 | 1/2" | 15/32" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 3/8"-16 | 1/2" | 9/16" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 3/8"-24 | 1/2" | 9/16" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 3/8"-32 | 1/2" | 9/16" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 1/2"-13 | 1/2" | 3/4" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-20 | 1/2" | 3/4" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-28 | 1/2" | 3/4" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 5/16"-18 | 1/4"-32 | 5/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 5/16"-24 | 1/4"-32 | 5/8" | 3/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 3/8"-16 | 1/4"-32 | 3/4" | 3/8" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 3/8"-24 | 1/4"-32 | 3/4" | 3/8" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 3/8"-32 | 1/4"-32 | 3/4" | 3/8" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/2"-13 | 1/4"-32 | 7/8" | 3/8" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/2"-20 | 1/4"-32 | 7/8" | 3/8" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/2"-28 | 1/4"-32 | 7/8" | 3/8" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | ||||||||||||||
| 1/4"-32 | 10-32 | 1/2" | 9/32" | Male | Female | Class 2A | Class 2B | 1/2" | 3/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 1/4"-32 | 1/4"-20 | 5/8" | 5/8" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 5/16"-18 | 1/2" | 15/32" | Male | Female | Class 2A | Class 2B | 1/2" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 3/8"-16 | 1/2" | 9/16" | Male | Female | Class 2A | Class 2B | 5/8" | 1" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-13 | 1/2" | 3/4" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-20 | 1/2" | 3/4" | Male | Female | Class 2A | Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
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.
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.
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.
For technical drawings and 3-D models, click on a part number.
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 | ||||||||||||||||
| 1/4"-32 | __ | M5 | 0.8 | 5/8" | 7/16" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | __ | M6 | 1 | 5/8" | 7/16" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | __ | M8 | 1 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | __ | M8 | 1.25 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | __ | M10 | 1 | 1/2" | 9/16" | Male | Female | Class 2A | Class 6H | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | __ | M10 | 1.25 | 1/2" | 9/16" | Male | Female | Class 2A | Class 6H | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | __ | M10 | 1.5 | 1/2" | 9/16" | Male | Female | Class 2A | Class 6H | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | __ | M12 | 1.25 | 1/2" | 3/4" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | __ | M12 | 1.5 | 1/2" | 3/4" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | __ | M12 | 1.75 | 1/2" | 3/4" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
Metric to Inch | ||||||||||||||||
| M6 | 1 | 1/4"-32 | __ | 1/2" | 5/8" | Male | Female | Class 6g | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M8 | 1 | 1/4"-32 | __ | 1/2" | 5/8" | Male | Female | Class 6g | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M8 | 1.25 | 1/4"-32 | __ | 1/2" | 5/8" | Male | Female | Class 6g | Class 2B | 1/2" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M10 | 1 | 1/4"-32 | __ | 5/8" | 3/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M10 | 1.25 | 1/4"-32 | __ | 5/8" | 3/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M10 | 1.5 | 1/4"-32 | __ | 5/8" | 3/8" | Male | Female | Class 6g | Class 2B | 5/8" | 1" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| M12 | 1.25 | 1/4"-32 | __ | 7/8" | 3/8" | Male | Female | Class 6g | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| M12 | 1.5 | 1/4"-32 | __ | 7/8" | 3/8" | Male | Female | Class 6g | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| M12 | 1.75 | 1/4"-32 | __ | 7/8" | 3/8" | Male | Female | Class 6g | Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 1/4"-32 | __ | M6 | 1 | 5/8" | 7/16" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 1/4"-32 | __ | M8 | 1.25 | 5/8" | 3/8" | Male | Female | Class 2A | Class 6H | 1/2" | 3/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 0000 |
| 1/4"-32 | __ | M12 | 1.25 | 1/2" | 3/4" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | __ | M12 | 1.75 | 1/2" | 3/4" | Male | Female | Class 2A | Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
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.
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.
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.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
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 | ||||||||||||
| 10-24 | 1/4"-32 | 3/8" | 5/8" | Class 2A | Class 2A | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 10-32 | 1/4"-32 | 3/8" | 5/8" | Class 2A | Class 2A | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-20 | 1/4"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-28 | 1/4"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 0000 |
| 1/4"-32 | 5/16"-18 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 5/16"-24 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 3/8"-16 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 3/8"-24 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 3/8"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-13 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-20 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-28 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | ||||||||||||
| 1/4"-20 | 1/4"-32 | 5/8" | 5/8" | Class 2A | Class 2A | 3/8" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 5/16"-18 | 5/8" | 5/8" | Class 2A | Class 2A | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 3/8"-16 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-13 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | 1/2"-20 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
Aluminum | ||||||||||||
| 1/4"-32 | 3/8"-16 | 5/8" | 5/8" | Class 2A | Class 2A | 9/16" | 1/4" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 0000 |
| 1/4"-32 | 1/2"-13 | 5/8" | 3/4" | Class 2A | Class 2A | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
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.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
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 | |||||||||||||
| 1/4"-32 | M5 | 0.8 | 5/8" | 9.5 | Class 2A | Class 6g | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 000000 |
| 1/4"-32 | M6 | 0.75 | 5/8" | 12.7 | Class 2A | Class 6g | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M6 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 3/8" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M8 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M8 | 1.25 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M10 | 1 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M10 | 1.25 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M10 | 1.5 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M12 | 1.25 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M12 | 1.5 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
| 1/4"-32 | M12 | 1.75 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 |
316 Stainless Steel | |||||||||||||
| 1/4"-32 | M5 | 0.8 | 5/8" | 9.5 | Class 2A | Class 6g | 3/8" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | M6 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 3/8" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | M8 | 1.25 | 5/8" | 12.7 | Class 2A | Class 6g | 1/2" | 3/16" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | M10 | 1.25 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | M10 | 1.5 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | M12 | 1.25 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
| 1/4"-32 | M12 | 1.75 | 5/8" | 19 | Class 2A | Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 |
Aluminum | |||||||||||||
| 1/4"-32 | M6 | 1 | 5/8" | 12.7 | Class 2A | Class 6g | 3/8" | 3/16" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 0000 |
| 1/4"-32 | M10 | 1.5 | 5/8" | 15.9 | Class 2A | Class 6g | 9/16" | 1/4" | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 |
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 withstand wet environments but will corrode when exposed to salt water and other chloride solutions.
316 stainless steel adapters are ideal in wet environments and will not corrode when exposed to salt water or harsh chemicals.
Aluminum adapters are about one third of the weight of steel adapters and resist corrosion in wet environments.
Adapters that meet ASTM specifications are made from or plated with materials that adhere to 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. | Thread Fit | Hex | Each | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| (A) | (B) | (A) | (B) | (A) | (B) | Size | Lg. | Specifications Met | Hardness | 1-9 | 10-Up | |
18-8 Stainless Steel | ||||||||||||
| 10-32 | 1/4"-32 | 1/4" | 1/4" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-20 | 1/4"-32 | 1/4" | 1/4" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 0000 | 0000 |
| 1/4"-28 | 1/4"-32 | 1/4" | 1/4" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 0000 | 0000 |
| 1/4"-32 | 5/16"-18 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 5/16"-24 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 5/16"-32 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 3/8"-16 | 1/4" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 3/8"-24 | 1/4" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 3/8"-32 | 1/4" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 1/2"-13 | 1/4" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 1/2"-20 | 1/4" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 0000 |
| 1/4"-32 | 1/2"-28 | 1/4" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A582 | Rockwell B80 | 000000000 | 00000 | 00000 |
316 Stainless Steel | ||||||||||||
| 1/4"-20 | 1/4"-32 | 1/4" | 1/4" | Class 2B | Class 2B | 1/2" | 1" | ASTM A276 | Rockwell B83 | 000000000 | 0000 | 0000 |
| 1/4"-32 | 5/16"-18 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | 3/8"-16 | 1/4" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | 1/2"-13 | 1/4" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | 1/2"-20 | 1/4" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM A276 | Rockwell B83 | 000000000 | 00000 | 00000 |
Aluminum | ||||||||||||
| 1/4"-32 | 5/16"-18 | 1/4" | 5/16" | Class 2B | Class 2B | 1/2" | 1" | ASTM B211 | Rockwell B56 | 000000000 | 0000 | 0000 |
| 1/4"-32 | 3/8"-16 | 1/4" | 3/8" | Class 2B | Class 2B | 1/2" | 1" | ASTM B211 | Rockwell B56 | 000000000 | 0000 | 0000 |
| 1/4"-32 | 1/2"-13 | 1/4" | 1/2" | Class 2B | Class 2B | 5/8" | 1 1/4" | ASTM B211 | Rockwell B56 | 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.
At about a third of the weight of steel adapters, aluminum adapters are the lightest we offer. They resist corrosion in wet environments.
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 | ||||||||||||||
| 1/4"-32 | M5 | 0.5 | 1/4" | 5 | Class 2B | Class 6H | 13mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 000000 | 000000 |
| 1/4"-32 | M5 | 0.8 | 1/4" | 5 | Class 2B | Class 6H | 13mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M6 | 0.75 | 1/4" | 6 | Class 2B | Class 6H | 13mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M6 | 1 | 1/4" | 6 | Class 2B | Class 6H | 13mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M8 | 1 | 1/4" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M8 | 1.25 | 1/4" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M10 | 1 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M10 | 1.25 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M10 | 1.5 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M12 | 1.25 | 1/4" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M12 | 1.5 | 1/4" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M12 | 1.75 | 1/4" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A582 | 85,000 | Rockwell B80 | 000000000 | 00000 | 00000 |
316 Stainless Steel | ||||||||||||||
| 1/4"-32 | M5 | 0.8 | 1/4" | 5 | Class 2B | Class 6H | 13mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M6 | 1 | 1/4" | 6 | Class 2B | Class 6H | 13mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M8 | 1 | 1/4" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M8 | 1.25 | 1/4" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M10 | 1 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M10 | 1.25 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M10 | 1.5 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M12 | 1.25 | 1/4" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M12 | 1.5 | 1/4" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
| 1/4"-32 | M12 | 1.75 | 1/4" | 12 | Class 2B | Class 6H | 18mm | 38mm | ASTM A276 | 75,000 | Rockwell B83 | 000000000 | 00000 | 00000 |
Aluminum | ||||||||||||||
| 1/4"-32 | M5 | 0.8 | 1/4" | 5 | Class 2B | Class 6H | 13mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 0000 | 0000 |
| 1/4"-32 | M6 | 1 | 1/4" | 6 | Class 2B | Class 6H | 13mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 0000 | 0000 |
| 1/4"-32 | M8 | 1.25 | 1/4" | 8 | Class 2B | Class 6H | 16mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 | 0000 |
| 1/4"-32 | M10 | 1.5 | 1/4" | 10 | Class 2B | Class 6H | 16mm | 38mm | ASTM B211 | 45,000 | Rockwell B56 | 000000000 | 00000 | 0000 |
Screws for Carbide Insert Holders
When it's time to replace the screws in a carbide insert holder, use the reference number on your holder to find the right size.
Clamp screws hold insert clamps at the proper height for tooling.
For technical drawings and 3-D models, click on a part number.
| Lg. | Reference No. | Right-Hand Thread Lg. | Left-Hand Thread Lg. | Drive Style | Drive Size | Material | Min. Rockwell Hardness | Thread Fit | Each | |
1/4"-32 | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 0.564" | CS-304 | 0.221" | 0.221" | Hex | 1/8" | Steel | C42 | Class 3A | 000000000 | 00000 |