About Threaded Studs and Rods
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About Shoulder Screws
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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.
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 B18.3.1M, 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. | |
M33 × 3.5 mm | |||||||||||
Black-Oxide Class 12.9 Alloy Steel | |||||||||||
| 80 | Fully Threaded | __ | Coarse | 50 | 33 | 24 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 000000 |
| 100 | Fully Threaded | __ | Coarse | 50 | 33 | 24 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 120 | Partially Threaded | 78 | Coarse | 50 | 33 | 24 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
Metric 316 Stainless Steel Shoulder Screws
More corrosion resistant than 18-8 stainless steel shoulder screws, these have excellent resistance to chemicals and salt water. They may be mildly magnetic. A standard shoulder with an undersized tolerance allows them to fit most machinery and equipment. They’re often used to guide or align components, and as an axle or pivot point.
Black-oxide stainless steel screws have a matte black finish.
For technical drawings and 3-D models, click on a part number.
Each | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Shoulder Lg., mm | Thread Size | Thread Pitch, mm | Thread Lg., mm | Head Dia., mm | Head Ht., mm | Tensile Strength, psi | Drive Size, mm | Specifications Met | 1-4 | 5-Up | |
36 mm Shoulder Dia.—Standard Fit (-0.072 to -0.01 mm Dia. Tolerance) | |||||||||||
| 50 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 000000 | 000000 |
| 60 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 00000 | 00000 |
| 70 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 00000 | 00000 |
| 80 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 00000 | 00000 |
| 90 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 00000 | 00000 |
| 100 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 00000 | 00000 |
| 120 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 00000 | 00000 |
| 130 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 000000 | 000000 |
| 140 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 000000 | 000000 |
| 150 | M33 | 3.5 | 40 | 54 | 22 | 70,000 | 17 | ISO 7379 | 000000000 | 000000 | 000000 |
Metric Medium-Strength Steel Threaded Rods—Grade B7
Made of Grade B7 steel, the tensile strength of these threaded rods is one and a half times higher than low-strength steel threaded rods. They also 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 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 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.
| Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Each | |
Steel | ||||||
|---|---|---|---|---|---|---|
M33 | ||||||
| 1 m | 3.5 | 150,000 | Rockwell C32 | DIN 976 | 0000000 | 0000000 |
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.
| Lg. | Thread Pitch, mm | Tensile Strength, psi | Hardness | Specifications Met | Pkg. Qty. | Pkg. | |
18-8 Stainless Steel | |||||||
|---|---|---|---|---|---|---|---|
M33 | |||||||
| 1 m | 3.5 | 70,000 | Not Rated | DIN 976 | 1 | 000000000 | 0000000 |