System of Measurement System of Measurement |
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Thread Size Thread Size | Show |
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Thread Size Thread Size | Hide |
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Length Length |
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Threading Threading |
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Material Material |
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Thread Direction Thread Direction |
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Drive Style Drive Style |
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| Hex | External Hex |
Thread Spacing Thread Spacing |
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Tensile Strength Tensile Strength |
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Thread Type Thread Type |
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Hardness Hardness |
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DFARS (Defense Acquisition Regulations Supplement) DFARS (DefenseAcquisition Regulations Supplement)  |
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Socket Head Profile Socket Head Profile |
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 | Standard |
About Threaded Studs and Rods
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About Set Screws
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About Hex Head Screws and Bolts
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About Socket 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.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
9/16"-18 | |||||||||||
Black-Oxide Alloy Steel | |||||||||||
| 3/4" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 00000 |
| 1" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
| 2" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
| 2 1/2" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
| 3" | Partially Threaded | 1 5/8" | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
| 4" | Partially Threaded | 1 1/2" | Fine | 27/32" | 9/16" | 7/16" | 170,000 | ASTM A574 | 1 | 000000000 | 0000 |
18-8 Stainless Steel Socket Head Screws
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head. Fine threads are closely spaced to prevent loosening from vibration. They are not compatible with coarse threads.
Screws that meet ISO 21269 and ISO 4762 (formerly DIN 912) 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 | Dia. | Ht. | Drive Size | Tensile Strength, psi | Pkg. Qty. | Pkg. | |
9/16"-18 | ||||||||||
18-8 Stainless Steel | ||||||||||
| 1" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 000000 |
| 1 1/2" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 2" | Fully Threaded | __ | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 3/4" | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 3" | Partially Threaded | 1 3/4" | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 3 1/2" | Partially Threaded | 1 3/4" | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 4" | Partially Threaded | 1 3/4" | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 5" | Partially Threaded | 1 3/4" | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 3/4" | Fine | 27/32" | 9/16" | 7/16" | 70,000 | 1 | 000000000 | 00000 |
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 | ||||||||||
9/16"-18 | ||||||||||
| 1" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
| 1 3/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 2" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 3" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 3 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
| 3 3/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
| 4 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 5" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 6" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 6 1/2" | Partially Threaded | 1 5/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 7" | Partially Threaded | 1 5/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
| 8" | Partially Threaded | 1 5/8" | Fine | 13/16" | 23/64" | 150,000 | ASME B18.2.1, SAE J429 | 1 | 000000000 | 0000 |
Medium-Strength Grade 5 Steel Hex Head Screws
Made from Grade 5 steel, these screws are suitable for fastening most machinery and equipment. Dimensions meet ASME B18.2.1 specifications. Grade 5 steel hex head screws are marked with three radial lines. Length is measured from under the head.
Zinc-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 A449 or SAE J429 comply with specifications and testing requirements for material quality.
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-Plated Grade 5 Steel | ||||||||||
9/16"-18 | ||||||||||
| 1" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 0000 |
| 2" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 10 | 000000000 | 00000 |
| 2 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 2 3/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 3" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 3 1/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 3 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 0000 |
| 4 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
| 5" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
| 5 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
| 6" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 120,000 | ASME B18.2.1, SAE J429 | 5 | 000000000 | 00000 |
18-8 Stainless Steel Hex Head Screws
Made from 18-8 stainless steel, these screws have good chemical resistance and may be mildly magnetic. Length is measured from under the head.
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 ASME or ISO (formerly DIN) specifications comply with these 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. | Threading | Pkg. | |
18-8 Stainless Steel | |||||||||||
9/16"-18 | |||||||||||
| 1" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 70,000 | ASME B18.2.1 | 1 | Fully Threaded | 000000000 | 00000 |
| 1 1/4" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 70,000 | __ | 5 | Fully Threaded | 000000000 | 0000 |
| 1 1/2" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 70,000 | ASME B18.2.1 | 1 | Fully Threaded | 000000000 | 0000 |
| 1 3/4" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 70,000 | __ | 5 | Fully Threaded | 000000000 | 0000 |
| 2" | Fully Threaded | __ | Fine | 13/16" | 23/64" | 70,000 | ASME B18.2.1 | 1 | Fully Threaded | 000000000 | 0000 |
| 2 1/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 2 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | ASME B18.2.1 | 1 | Partially Threaded | 000000000 | 0000 |
| 2 3/4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 3" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | ASME B18.2.1 | 1 | Partially Threaded | 000000000 | 0000 |
| 3 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 4" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 4 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 5" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 5 1/2" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
| 6" | Partially Threaded | 1 3/8" | Fine | 13/16" | 23/64" | 70,000 | __ | 1 | Partially Threaded | 000000000 | 0000 |
Alloy Steel Cup-Point Set Screws
Made from alloy steel, these set screws have a thin edge that digs into hard surfaces for a secure hold. Length listed is the overall length.
Black-oxide alloy steel set screws resist corrosion in dry environments.
For technical drawings and 3-D models, click on a part number.
| Lg. | Drive Size | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | ||||||
|---|---|---|---|---|---|---|
9/16"-18 | ||||||
| 1/2" | 1/4" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 000000000 | 000000 |
| 3/4" | 1/4" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 000000000 | 00000 |
| 1" | 1/4" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 000000000 | 00000 |
| 1 1/4" | 1/4" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 000000000 | 00000 |
| 1 1/2" | 1/4" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 000000000 | 00000 |
Medium-Strength Steel Threaded Rods—Grade B7
These Grade B7 threaded rods meet the pressure and temperature requirements of ASTM A193 and are often used to secure pressure tanks, valves, and flanges.
For technical drawings and 3-D models, click on a part number.
| Lg. | Tensile Strength, psi | Hardness | Specifications Met | Each | |
9/16"-18 | |||||
|---|---|---|---|---|---|
| 4" | 120,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6" | 120,000 | Rockwell C35 | ASTM A193 | 000000000 | 0000 |
| 1ft. | 120,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 2ft. | 120,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 3ft. | 120,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
| 6ft. | 120,000 | Rockwell C35 | ASTM A193 | 000000000 | 00000 |
Low-Strength Steel Threaded Rods
About half the strength of medium-strength steel threaded rods, use these for light duty hanging, mounting, and fastening.
Zinc-plated steel threaded rods are corrosion resistant in wet environments.
For technical drawings and 3-D models, click on a part number.
18-8 Stainless Steel Threaded Rods
18-8 stainless steel threaded rods have good chemical resistance and may be mildly magnetic.
For technical drawings and 3-D models, click on a part number.
Eyebolts—For Lifting
Also known as machinery eyebolts.
Zinc-plated steel eyebolts offer good corrosion resistance.
Note: Capacities listed are for vertical lifting only. Eyebolts with shoulder can be used for angular lifting up to 45°, but the capacities will be significantly reduced. For angular lifting, we recommend Hoist Rings. Eyebolts without shoulder are for vertical lifting only.
Warning: Never use to lift people or items over people.
For technical drawings and 3-D models, click on a part number.
Thread | ||||||||
|---|---|---|---|---|---|---|---|---|
| Size | Lg. | Shank Lg. | Eye Dia. | Vertical Capacity, lbs. | Specifications Met | Overall Lg. | Each | |
With Shoulder | ||||||||
Steel | ||||||||
| 9/16"-18 | 1 5/8" | 1 5/8" | 1 1/4" | 3,000 | ASTM A489 | 4 1/2" | 00000000 | 000000 |
Zinc-Plated Steel | ||||||||
| 9/16"-18 | 1 5/8" | 1 5/8" | 1 1/4" | 3,000 | ASTM A489 | 4 1/2" | 00000000 | 00000 |
Without Shoulder | ||||||||
Steel | ||||||||
| 9/16"-18 | 1 5/8" | 1 5/8" | 1 1/4" | 3,000 | ASTM A489 | 3 7/8" | 00000000 | 00000 |
Zinc-Plated Steel | ||||||||
| 9/16"-18 | 1 5/8" | 1 5/8" | 1 1/4" | 3,000 | ASTM A489 | 3 7/8" | 00000000 | 00000 |
Center-Locating Punches for Threaded Holes
Also known as transfer screws, these punches can be used in any threaded hole to transfer the hole location. Use the handle to screw a punch into a hole. Place your workpiece against the punch and strike it with a hammer to mark the hole location.
| Thread Size | Includes | Punch Material | Grip Texture | Each | |
Inch | |||||
|---|---|---|---|---|---|
| 9/16"-18 | Handle, Six Punches | Steel | Smooth | 0000000 | 000000 |