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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Thread Type Thread Type |
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Threading Threading |
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 | Threaded on Both Ends |
Length Length |
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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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Material Material |
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Drive Style Drive Style |
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Thread Direction Thread Direction |
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Specifications Met Specifications Met |
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Tensile Strength Tensile Strength |
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Hardness Hardness |
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Thread Fit Thread Fit |
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Socket Head Profile Socket Head Profile |
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Drive Size Drive Size |
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About Threaded Studs and Rods
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About Socket Head Screws
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About Hex Head Screws and Bolts
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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.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. Screws that meet ASME B18.3, ASME B18.3M, 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., mm | Threading | Min. Thread Lg., mm | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
M27 × 3 mm | |||||||||||
Black-Oxide Class 12.9 Alloy Steel | |||||||||||
| 60 | Fully Threaded | __ | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 70 | Fully Threaded | __ | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 80 | Fully Threaded | __ | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 100 | Partially Threaded | 66 | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 120 | Partially Threaded | 66 | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 140 | Partially Threaded | 66 | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 180 | Partially Threaded | 66 | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 200 | Partially Threaded | 66 | Coarse | 40 | 27 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
High-Strength Metric Class 10.9 Steel Hex Head Screws
Choose these Class 10.9 steel screws for high-stress applications, such as valves, pumps, motors, and automotive suspension systems. They are at least 25% stronger than medium-strength steel screws. Dimensions meet ISO (formerly DIN) specifications. Length is measured from under the head.
Zinc yellow-chromate plated and zinc-plated steel screws resist corrosion in wet environments. Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch.
For technical drawings and 3-D models, click on a part number.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Min. Thread Lg., mm | Thread Spacing | Wd., mm | Ht., mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Zinc Yellow-Chromate Plated Class 10.9 Steel | ||||||||||
M27 × 3 mm | ||||||||||
| 80 | Fully Threaded | __ | Coarse | 41 | 17 | 150,000 | ISO 4017, DIN 933 | 1 | 000000000 | 000000 |
| 90 | Fully Threaded | __ | Coarse | 41 | 17 | 150,000 | ISO 4017, DIN 933 | 1 | 000000000 | 00000 |
| 100 | Partially Threaded | 60 | Coarse | 41 | 17 | 150,000 | ISO 4014, DIN 931 | 1 | 000000000 | 00000 |
| 120 | Partially Threaded | 60 | Coarse | 41 | 17 | 150,000 | ISO 4014, DIN 931 | 1 | 000000000 | 00000 |
Medium-Strength Metric Class 8.8 Steel Hex Head Screws
These Class 8.8 steel screws are suitable for fastening most machinery and equipment. Dimensions meet ISO (formerly DIN) specifications. Length is measured from under the head.
Match the thread spacing of mating components. Coarse threads are the industry standard; choose these screws if you don’t know the pitch.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||
|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Thread Spacing | Wd., mm | Ht., mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Class 8.8 Steel | |||||||||
M27 × 3 mm | |||||||||
| 60 | Fully Threaded | Coarse | 41 | 17 | 110,000 | ISO 4017, DIN 933 | 1 | 000000000 | 00000 |
| 80 | Fully Threaded | Coarse | 41 | 17 | 110,000 | ISO 4017, DIN 933 | 1 | 000000000 | 0000 |
| 100 | Fully Threaded | Coarse | 41 | 17 | 110,000 | ISO 4017, DIN 933 | 1 | 000000000 | 0000 |
Metric High-Strength Steel Heavy Hex
Head Screws for Structural Applications
Designed for construction and exterior building applications, these metric screws are often used to join I-beams and scaffolding. Their partial threading leaves an unthreaded portion that is strong enough to stand up to the sideways forces of joints. Made of Class 10.9 steel, these screws are at least 25% stronger than our medium-strength steel heavy hex head screws. They also have a hot-dipped galvanized finish that makes them 10 times more corrosion resistant than zinc plating, so they won't rust in wet environments. However, this finish is thicker than other finishes, so they should be used with DIN 6916 structural washers and DIN 6915 structural hex nuts. All meet ISO 7412 (formerly DIN 6914), an international standard for screw dimensions.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Lg., mm | Threading | Thread Spacing | Thread Lg., mm | Grip Lg., mm | Wd., mm | Ht., mm | Tensile Strength, psi | Specifications Met | Each | |
Hot-Dipped Galvanized Class 10.9 Steel | ||||||||||
M27 × 3 mm | ||||||||||
| 70 | Partially Threaded | Coarse | 37 | 33 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 000000 |
| 75 | Partially Threaded | Coarse | 37 | 38 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 80 | Partially Threaded | Coarse | 37 | 43 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 90 | Partially Threaded | Coarse | 37 | 53 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 100 | Partially Threaded | Coarse | 39 | 61 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 110 | Partially Threaded | Coarse | 39 | 71 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 120 | Partially Threaded | Coarse | 39 | 81 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 130 | Partially Threaded | Coarse | 39 | 91 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 140 | Partially Threaded | Coarse | 39 | 101 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 150 | Partially Threaded | Coarse | 39 | 111 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
| 160 | Partially Threaded | Coarse | 39 | 121 | 48 | 17 | 150,000 | DIN 6914, ISO 7412 | 000000000 | 00000 |
Metric High-Strength Steel Threaded Rods—Class 10.9
These Class 10.9 steel threaded rods are about 25% stronger than medium-strength steel rods.
For technical drawings and 3-D models, click on a part number.
Metric Very-High-Strength Steel
Threaded Rods—Class 12.9
Class 12.9 rods are about 20% stronger than Class 10.9 threaded rods and are for use in heavy machinery.
For technical drawings and 3-D models, click on a part number.
Metric 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.
Medium-Strength Steel Threaded Rods—Class 8.8
An economical alternative to Grade B7 and Grade B16 threaded rods, these metric Class 8.8 rods are suitable for fastening most machinery and equipment.
Zinc-plated steel threaded rods resist corrosion in wet environments.
For technical drawings and 3-D models, click on a part number.
Metric Fine-Thread Low-Strength Steel Threaded Rods
About half the strength of medium-strength steel threaded rods, use these for light duty hanging, mounting, and fastening.
For technical drawings and 3-D models, click on a part number.
Metric Low-Strength Steel Threaded Rods
These threaded rods are about half the strength of medium-strength steel threaded rods 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.
Metric 18-8 Stainless Steel Threaded Rods
These 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.
Setup Studs
Combine these setup studs with T-slot nuts, flanged nuts, setup clamps, or setup blocks to clamp and hold workpieces, vises, and other objects onto your fixturing table. Also known as double-ended studs, they have threads on both ends. One end threads into a T-slot nut or flanged nut inside the table. The other end passes through a setup clamp and secures with a nut and washer. The middle of the stud is unthreaded for gripping and adjusting the stud.
These setup studs are also used to align parts during assembly. One end of the stud is threaded into the part being added, and the other end fits into the mounting hole of the mating part. Because the studs don't have a head, you have the option to thread them into holes from either end, but they require a nut. You can adjust the distance between the mating parts by tightening and loosening the nut.
Black-oxide steel studs have a protective coating that resists corrosion in dry environments.
For technical drawings and 3-D models, click on a part number.
Eyebolts—For Lifting
Also known as machinery eyebolts.
Galvanized steel eyebolts have a hot-dipped finish for more corrosion resistance than zinc-plated steel.
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.
Warning: Never use to lift people or items over people.
For technical drawings and 3-D models, click on a part number.