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About Hex Head Screws and Bolts
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Choose a hex head fastener with the right threading, thread size, material, and strength for your equipment.
Steel Hex Head Screws
 |  |
Fully Threaded | Partially Threaded |
Our most popular hex head screws. These have a head with six flat sides to keep wrenches and sockets from slipping and rounding off the drive.
Length is measured from under the head.
High-Strength Fastener—Commonly used to fasten components in valves, pumps, motors, and other high-stress applications. These screws have a tensile strength of 125,000 to 160,000 psi.
Zinc-Yellow-Chromate-Plated Steel—With slightly better corrosion resistance than zinc-plated steel screws, these stand up to more frequent exposure to moisture.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Wd. | Ht. | Threading | Thread Spacing | Fastener Strength Grade/Class | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
High-Strength Zinc-Yellow-Chromate-Plated Steel | |||||||||||
1/2"-28 | |||||||||||
| 1 1/4" | 3/4" | 5/16" | Fully Threaded | Extra Fine | SAE Grade 8 | 150,000 | 1 | 92620A126 | 000000 | ||
| 1 1/2" | 3/4" | 5/16" | Fully Threaded | Extra Fine | SAE Grade 8 | 150,000 | 1 | 92620A127 | 00000 | ||
| 2" | 3/4" | 5/16" | Partially Threaded | Extra Fine | SAE Grade 8 | 150,000 | 1 | 92620A128 | 00000 | ||
| 2 1/2" | 3/4" | 5/16" | Partially Threaded | Extra Fine | SAE Grade 8 | 150,000 | 1 | 92620A129 | 00000 | ||
| 3" | 3/4" | 5/16" | Partially Threaded | Extra Fine | SAE Grade 8 | 150,000 | 1 | 92620A131 | 00000 | ||
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.
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 in wet environments but will corrode when exposed to salt water and chemicals. They may be mildly magnetic.
316 Stainless Steel—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.
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. | Gender | Thread Fit | Hex | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size (A) | Thread Size (B) | (A) | (B) | (A) | (B) | (A) | (B) | Size | Length | Specs. Met | Tensile Strength, psi | Hardness | Each | |||
Aluminum | ||||||||||||||||
| 1/2"-28 | 1/4"-20 | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 91156A140 | 000000 | ||
| 1/2"-28 | 5/16"-18 | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 91156A141 | 00000 | ||
| 1/2"-28 | 3/8"-16 | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 91156A142 | 00000 | ||
| 1/2"-28 | 1/2"-13 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 91156A143 | 00000 | ||
18-8 Stainless Steel | ||||||||||||||||
| 1/4"-20 | 1/2"-28 | 1/2" | 3/4" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A130 | 00000 | ||
| 1/4"-28 | 1/2"-28 | 1/2" | 3/4" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A144 | 00000 | ||
| 1/4"-32 | 1/2"-28 | 1/2" | 3/4" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A158 | 00000 | ||
| 5/16"-18 | 1/2"-28 | 5/8" | 11/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A166 | 00000 | ||
| 5/16"-24 | 1/2"-28 | 5/8" | 11/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A179 | 00000 | ||
| 5/16"-32 | 1/2"-28 | 5/8" | 11/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A193 | 00000 | ||
| 3/8"-24 | 1/2"-28 | 3/4" | 3/4" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A212 | 00000 | ||
| 1/2"-13 | 1/2"-28 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A232 | 00000 | ||
| 1/2"-20 | 1/2"-28 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A243 | 00000 | ||
| 1/2"-28 | 1/4"-20 | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A245 | 00000 | ||
| 1/2"-28 | 1/4"-28 | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A246 | 00000 | ||
| 1/2"-28 | 1/4"-32 | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A247 | 00000 | ||
| 1/2"-28 | 5/16"-18 | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A248 | 00000 | ||
| 1/2"-28 | 5/16"-24 | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A249 | 00000 | ||
| 1/2"-28 | 5/16"-32 | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A250 | 00000 | ||
| 1/2"-28 | 3/8"-16 | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A251 | 00000 | ||
| 1/2"-28 | 3/8"-24 | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A252 | 00000 | ||
| 1/2"-28 | 3/8"-32 | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A253 | 00000 | ||
| 1/2"-28 | 1/2"-13 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A254 | 00000 | ||
| 1/2"-28 | 1/2"-20 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A255 | 00000 | ||
316 Stainless Steel | ||||||||||||||||
| 1/4"-20 | 1/2"-28 | 1/2" | 3/4" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A118 | 00000 | ||
| 5/16"-18 | 1/2"-28 | 5/8" | 11/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A138 | 00000 | ||
| 3/8"-16 | 1/2"-28 | 3/4" | 3/4" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A159 | 00000 | ||
| 1/2"-13 | 1/2"-28 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A179 | 00000 | ||
| 1/2"-20 | 1/2"-28 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A188 | 00000 | ||
| 1/2"-28 | 1/4"-20 | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A189 | 00000 | ||
| 1/2"-28 | 5/16"-18 | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A190 | 00000 | ||
| 1/2"-28 | 5/16"-24 | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A191 | 00000 | ||
| 1/2"-28 | 3/8"-16 | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A192 | 00000 | ||
| 1/2"-28 | 3/8"-24 | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A193 | 00000 | ||
| 1/2"-28 | 1/2"-13 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A194 | 00000 | ||
| 1/2"-28 | 1/2"-20 | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91155A195 | 00000 | ||
Inch-to-Inch Male Hex Thread Adapters
 |  |
Thread Lg. | Thread Fit | Hex | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size (A) | Thread Size (B) | (A) | (B) | (A) | (B) | Size | Length | Specs. Met | Tensile Strength, psi | Hardness | Certificate Form | Certificate Type | Each | |||
Aluminum | ||||||||||||||||
| 1/4"-20 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | — | — | 91347A190 | 000000 | ||
| 3/8"-16 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | — | — | 91347A390 | 00000 | ||
| 1/2"-13 | 1/2"-28 | 3/4" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91347A460 | 00000 | ||
18-8 Stainless Steel | ||||||||||||||||
| 1/4"-20 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 95316A607 | 00000 | ||
| 1/4"-28 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 95316A675 | 00000 | ||
| 1/4"-32 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 95316A696 | 00000 | ||
| 5/16"-18 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 95316A712 | 00000 | ||
| 5/16"-24 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 95316A785 | 00000 | ||
| 5/16"-32 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 95316A807 | 00000 | ||
| 3/8"-16 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 95316A828 | 00000 | ||
| 3/8"-24 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 95316A843 | 00000 | ||
| 3/8"-32 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 95316A875 | 00000 | ||
| 1/2"-13 | 1/2"-28 | 3/4" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 95316A897 | 00000 | ||
| 1/2"-20 | 1/2"-28 | 3/4" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 95316A912 | 00000 | ||
316 Stainless Steel | ||||||||||||||||
| 1/4"-20 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91344A290 | 00000 | ||
| 5/16"-18 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91344A480 | 00000 | ||
| 3/8"-16 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | — | 91344A620 | 00000 | ||
| 3/8"-24 | 1/2"-28 | 5/8" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91344A650 | 00000 | ||
| 1/2"-13 | 1/2"-28 | 3/4" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91344A690 | 00000 | ||
| 1/2"-20 | 1/2"-28 | 3/4" | 3/4" | Unified Standard Class 2A | Unified Standard Class 2A | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91344A710 | 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.
Aluminum—At one third the weight of steel, aluminum adapters are the lightest option. They will not rust in damp or humid environments, but they will corrode if left in water.
18-8 Stainless Steel—18-8 stainless steel adapters can be used in wet environments, but chemicals or salt water will cause staining and rust spots.
316 Stainless Steel—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.
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. | Gender | Thread Fit | Hex | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size (A) | Thread Size (B) | (A) | (B) | (A) | (B) | (A) | (B) | Size | Length | Specs. Met | Tensile Strength, psi | Hardness | Each | |||
Aluminum | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 1/2"-28 | M6 x 1 mm | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 91646A139 | 000000 | ||
| 1/2"-28 | M8 x 1.25 mm | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM B211 | 45,000 | Rockwell B56 | 91646A140 | 00000 | ||
18-8 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 1/2"-28 | M6 x 0.75 mm | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A373 | 00000 | ||
| 1/2"-28 | M6 x 1 mm | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A338 | 00000 | ||
| 1/2"-28 | M8 x 1 mm | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A374 | 00000 | ||
| 1/2"-28 | M8 x 1.25 mm | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A340 | 00000 | ||
| 1/2"-28 | M10 x 1 mm | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A341 | 00000 | ||
| 1/2"-28 | M10 x 1.25 mm | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A342 | 00000 | ||
| 1/2"-28 | M10 x 1.5 mm | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A344 | 00000 | ||
| 1/2"-28 | M12 x 1.25 mm | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A345 | 00000 | ||
| 1/2"-28 | M12 x 1.5 mm | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A346 | 00000 | ||
| 1/2"-28 | M12 x 1.75 mm | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A347 | 00000 | ||
Metric to Inch | ||||||||||||||||
| M6 x 0.75 mm | 1/2"-28 | 1/2" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A859 | 00000 | ||
| M6 x 1 mm | 1/2"-28 | 1/2" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A870 | 00000 | ||
| M8 x 1 mm | 1/2"-28 | 5/8" | 11/16" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A884 | 00000 | ||
| M8 x 1.25 mm | 1/2"-28 | 5/8" | 11/16" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A896 | 00000 | ||
| M10 x 1 mm | 1/2"-28 | 3/4" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A908 | 00000 | ||
| M10 x 1.25 mm | 1/2"-28 | 3/4" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A920 | 00000 | ||
| M10 x 1.5 mm | 1/2"-28 | 3/4" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A930 | 00000 | ||
| M12 x 1.25 mm | 1/2"-28 | 3/4" | 7/8" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A942 | 00000 | ||
| M12 x 1.5 mm | 1/2"-28 | 3/4" | 7/8" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A954 | 00000 | ||
| M12 x 1.75 mm | 1/2"-28 | 3/4" | 7/8" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A582 | 85,000 | Rockwell B80 | 92499A964 | 00000 | ||
316 Stainless Steel | ||||||||||||||||
Inch to Metric | ||||||||||||||||
| 1/2"-28 | M6 x 1 mm | 7/8" | 3/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A191 | 00000 | ||
| 1/2"-28 | M8 x 1 mm | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A192 | 00000 | ||
| 1/2"-28 | M8 x 1.25 mm | 7/8" | 15/32" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A193 | 00000 | ||
| 1/2"-28 | M10 x 1 mm | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A194 | 00000 | ||
| 1/2"-28 | M10 x 1.25 mm | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A195 | 00000 | ||
| 1/2"-28 | M10 x 1.5 mm | 7/8" | 9/16" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A196 | 00000 | ||
| 1/2"-28 | M12 x 1.25 mm | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A197 | 00000 | ||
| 1/2"-28 | M12 x 1.5 mm | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A198 | 00000 | ||
| 1/2"-28 | M12 x 1.75 mm | 3/4" | 7/8" | Male | Female | Unified Standard Class 2A | Metric Class 6H | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A199 | 00000 | ||
Metric to Inch | ||||||||||||||||
| M6 x 1 mm | 1/2"-28 | 1/2" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A218 | 00000 | ||
| M8 x 1.25 mm | 1/2"-28 | 5/8" | 11/16" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A232 | 00000 | ||
| M10 x 1.25 mm | 1/2"-28 | 3/4" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A246 | 00000 | ||
| M10 x 1.5 mm | 1/2"-28 | 3/4" | 3/4" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A255 | 00000 | ||
| M12 x 1.25 mm | 1/2"-28 | 3/4" | 7/8" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A265 | 00000 | ||
| M12 x 1.75 mm | 1/2"-28 | 3/4" | 7/8" | Male | Female | Metric Class 6g | Unified Standard Class 2B | 3/4" | 1 1/2" | ASTM A276 | 75,000 | Rockwell B83 | 91645A283 | 00000 | ||
Inch-to-Metric Male Hex Thread Adapters
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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.
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 | ||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Thread Size (A) | Thread Size (B) | (A) | (B), mm | (A) | (B) | Size | Length | Specs. Met | Tensile Strength, psi | Hardness | Certificate Form | Certificate Type | Each | |||
Aluminum | ||||||||||||||||
| 1/2"-28 | M6 x 1 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | — | Material Certificate with Traceable Lot Number | 91091A427 | 000000 | ||
| 1/2"-28 | M8 x 1.25 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | — | Material Certificate with Traceable Lot Number | 91091A428 | 00000 | ||
| 1/2"-28 | M10 x 1.25 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | — | Material Certificate with Traceable Lot Number | 91091A429 | 00000 | ||
| 1/2"-28 | M10 x 1.5 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | Digital | Material Certificate with Traceable Lot Number | 91091A430 | 00000 | ||
| 1/2"-28 | M12 x 1.75 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM B211 | 45,000 | Rockwell B56 | — | Material Certificate with Traceable Lot Number | 91091A431 | 00000 | ||
18-8 Stainless Steel | ||||||||||||||||
| 1/2"-28 | M6 x 0.75 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 91091A233 | 00000 | ||
| 1/2"-28 | M6 x 1 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91091A234 | 00000 | ||
| 1/2"-28 | M8 x 1 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 91091A235 | 00000 | ||
| 1/2"-28 | M8 x 1.25 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 91091A236 | 00000 | ||
| 1/2"-28 | M10 x 1 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91091A237 | 00000 | ||
| 1/2"-28 | M10 x 1.25 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 91091A238 | 00000 | ||
| 1/2"-28 | M10 x 1.5 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 91091A239 | 00000 | ||
| 1/2"-28 | M12 x 1.25 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | Material Certificate with Traceable Lot Number | 91091A240 | 00000 | ||
| 1/2"-28 | M12 x 1.5 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | — | — | 91091A241 | 00000 | ||
| 1/2"-28 | M12 x 1.75 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A582 | 85,000 | Rockwell B80 | Digital | Material Certificate with Traceable Lot Number | 91091A242 | 00000 | ||
316 Stainless Steel | ||||||||||||||||
| 1/2"-28 | M6 x 1 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A351 | 00000 | ||
| 1/2"-28 | M8 x 1 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A352 | 00000 | ||
| 1/2"-28 | M8 x 1.25 mm | 3/4" | 12.7 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A353 | 00000 | ||
| 1/2"-28 | M10 x 1 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91091A354 | 00000 | ||
| 1/2"-28 | M10 x 1.25 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A355 | 00000 | ||
| 1/2"-28 | M10 x 1.5 mm | 3/4" | 15.9 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A356 | 00000 | ||
| 1/2"-28 | M12 x 1.25 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | Digital | Material Certificate with Traceable Lot Number | 91091A357 | 00000 | ||
| 1/2"-28 | M12 x 1.5 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A358 | 00000 | ||
| 1/2"-28 | M12 x 1.75 mm | 3/4" | 19 | Unified Standard Class 2A | Metric Class 6g | 3/4" | 3/8" | ASTM A276 | 75,000 | Rockwell B83 | — | Material Certificate with Traceable Lot Number | 91091A359 | 00000 | ||
