About Shoulder Screws
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Metric Slotted Low-Profile Steel Shoulder Screws
With a reduced head size and an unthreaded shoulder, use these screws as a shaft or dowel pin for small rotating parts in low-clearance applications. They also can act as a linear slide for alignment in punch-and-die mechanisms or plastic injection mold sets. The head keeps items in place when they’re rotating or sliding on the shoulder. They’re also known as shoulder bolts or stripper bolts.
Made of steel, these shoulder screws are stronger, more wear resistant, and less expensive than stainless steel alternatives. A zinc plating protects them from rust in wet areas. They’re not as corrosion resistant as stainless steel screws, however, so don’t use them where chemicals or salt water are present.
These screws meet DIN 923, an international standard for shoulder screw dimensions.
For technical drawings and 3-D models, click on a part number.
| Shoulder Lg., mm | Thread Size  | Thread Pitch, mm | Thread Lg., mm | Head Dia., mm | Head Ht., mm | Material | Finish | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
4 mm Shoulder Dia.—Standard Fit (-0.03 to 0 mm Dia. Tolerance) | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 00000 |
| 3 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 4 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 5 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 6 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 8 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 10 | M3 | 0.5 | 4.5 | 7 | 1.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
5.5 mm Shoulder Dia.—Standard Fit (-0.03 to 0 mm Dia. Tolerance) | ||||||||||||
| 2.5 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 3 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 4 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 5 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 6 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 8 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 10 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 12 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 16 | M4 | 0.7 | 6 | 8.5 | 2.4 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 00000 |
7 mm Shoulder Dia.—Standard Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||||
| 2.5 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 3 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 4 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 5 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 6 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 8 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 10 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 12 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 16 | M5 | 0.8 | 7 | 11 | 2.7 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 00000 |
8 mm Shoulder Dia.—Standard Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||||
| 3 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 4 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 00000 |
| 5 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 6 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 8 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 10 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 12 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 16 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 10 | 000000000 | 0000 |
| 20 | M6 | 1 | 9 | 13 | 3.1 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
10 mm Shoulder Dia.—Standard Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||||
| 4 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 00000 |
| 5 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
| 6 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
| 8 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
| 10 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
| 12 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 00000 |
| 16 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
| 20 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 0000 |
| 25 | M8 | 1.25 | 11 | 16 | 3.8 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 5 | 000000000 | 00000 |
13 mm Shoulder Dia.—Standard Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||||
| 10 | M10 | 1.5 | 13.5 | 20 | 4.6 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 1 | 000000000 | 0000 |
| 12 | M10 | 1.5 | 13.5 | 20 | 4.6 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 1 | 000000000 | 00000 |
| 16 | M10 | 1.5 | 13.5 | 20 | 4.6 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 1 | 000000000 | 00000 |
| 20 | M10 | 1.5 | 13.5 | 20 | 4.6 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 1 | 000000000 | 00000 |
| 25 | M10 | 1.5 | 13.5 | 20 | 4.6 | Alloy Steel | Zinc Plated | 58,000 | DIN 923 | 1 | 000000000 | 0000 |
Metric Slotted 18-8 Stainless Steel Precision Shoulder Screws
With a shoulder that’s twice as precise as standard shoulder screws, these metric shoulder screws act as a shaft or axle for bearings and other moving parts in applications that require smooth and accurate movement, such as measuring and lab equipment. Their head keeps the rotating and sliding parts in place. You can also use these screws as alignment guides in punch-and-die mechanisms, plastic-injection-mold sets, and other linear motion applications. Made of 18-8 stainless steel, they’re nearly as strong as steel but won’t rust in outdoor or washdown environments. Shoulder screws are sometimes known as shoulder bolts and stripper bolts.
Screws with a low profile have a head height that's about two-thirds the head height of a standard shoulder screw. Use them in low-clearance applications such as inside machines. These screws meet DIN 923, an international standard for shoulder screw dimensions.
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 | Specifications Met | 1-4 | 5-Up | |
Low Profile | ||||||||||
2.5 mm Shoulder Dia.—Precise Fit (-0.025 to 0 mm Dia. Tolerance) | ||||||||||
| 2 | M1.6 | 0.35 | 2.5 | 4 | 1 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
| 4 | M1.6 | 0.35 | 2.5 | 4 | 1 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
| 5 | M1.6 | 0.35 | 2.5 | 4 | 1 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
4 mm Shoulder Dia.—Precise Fit (-0.03 to 0 mm Dia. Tolerance) | ||||||||||
| 4 | M3 | 0.5 | 4.5 | 7 | 1.8 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
| 6 | M3 | 0.5 | 4.5 | 7 | 1.8 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
| 8 | M3 | 0.5 | 4.5 | 7 | 1.8 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
| 10 | M3 | 0.5 | 4.5 | 7 | 1.8 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
5.5 mm Shoulder Dia.—Precise Fit (-0.03 to 0 mm Dia. Tolerance) | ||||||||||
| 6 | M4 | 0.7 | 6 | 8.5 | 2.4 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
| 10 | M4 | 0.7 | 6 | 8.5 | 2.4 | 70,000 | DIN 923 | 000000000 | 0000 | 0000 |
7 mm Shoulder Dia.—Precise Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||
| 6 | M5 | 0.8 | 7 | 11 | 2.7 | 70,000 | DIN 923 | 000000000 | 00000 | 0000 |
| 10 | M5 | 0.8 | 7 | 11 | 2.7 | 70,000 | DIN 923 | 000000000 | 00000 | 0000 |
| 16 | M5 | 0.8 | 7 | 11 | 2.7 | 70,000 | DIN 923 | 000000000 | 00000 | 0000 |
8 mm Shoulder Dia.—Precise Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||
| 6 | M6 | 1 | 9 | 13 | 3.1 | 70,000 | DIN 923 | 000000000 | 00000 | 0000 |
| 10 | M6 | 1 | 9 | 13 | 3.1 | 70,000 | DIN 923 | 000000000 | 00000 | 0000 |
| 16 | M6 | 1 | 9 | 13 | 3.1 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
10 mm Shoulder Dia.—Precise Fit (-0.036 to 0 mm Dia. Tolerance) | ||||||||||
| 6 | M8 | 1.25 | 11 | 16 | 3.8 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
| 10 | M8 | 1.25 | 11 | 16 | 3.8 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
| 16 | M8 | 1.25 | 11 | 16 | 3.8 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
| 25 | M8 | 1.25 | 11 | 16 | 3.8 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
13 mm Shoulder Dia.—Precise Fit (-0.043 to 0 mm Dia. Tolerance) | ||||||||||
| 10 | M10 | 1.5 | 13.5 | 20 | 4.6 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
| 16 | M10 | 1.5 | 13.5 | 20 | 4.6 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |
| 25 | M10 | 1.5 | 13.5 | 20 | 4.6 | 70,000 | DIN 923 | 000000000 | 00000 | 00000 |