About Flat Head 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. Zinc-plated steel screws resist corrosion in wet environments. The screws with a blue-dyed finish are easy to distinguish.
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. | |
M24 × 3 mm | |||||||||||
Black-Oxide Class 12.9 Alloy Steel | |||||||||||
| 40 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 45 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 50 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 55 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 60 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 65 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 70 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 75 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 80 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 90 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 90 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 100 | Fully Threaded | __ | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 100 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 110 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 120 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 130 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 140 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 150 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 0000 |
| 160 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 180 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 200 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 220 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 240 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 260 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 300 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
Blue-Dyed Zinc-Plated Class 12.9 Alloy Steel | |||||||||||
| 80 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 90 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 100 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 | 170,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
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.
Metric screws are also known as A2 stainless steel screws.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch.
Screws that meet ASME B1.1, ASME B18.3, ISO 21269, and ISO 4762 (formerly DIN 912) comply with standards for dimensions.
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. | |
M24 × 3 mm | |||||||||||
18-8 Stainless Steel | |||||||||||
| 50 | Fully Threaded | __ | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912, ISO 4762 | 1 | 000000000 | 000000 |
| 60 | Fully Threaded | __ | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 70 | Fully Threaded | __ | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912 | 1 | 000000000 | 00000 |
| 80 | Fully Threaded | __ | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 90 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912 | 1 | 000000000 | 00000 |
| 100 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912, ISO 4762 | 1 | 000000000 | 00000 |
| 120 | Partially Threaded | 60 | Coarse | 36 | 24 | 19 mm | 70,000 | DIN 912 | 1 | 000000000 | 00000 |
Metric Alloy Steel Hex Drive Flat Head Screws
Made from alloy steel, these screws are nearly twice as strong as stainless steel flat head screws. They're angled under the head to sit flush within countersunk holes. Length is measured from the top of the head.
Black-oxide alloy steel screws have mild corrosion resistance in dry environments.
For technical drawings and 3-D models, click on a part number.
| Lg., mm | Threading | Head Dia., mm | Head Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Class 10.9 Alloy Steel—60° Countersink Angle | |||||||||
|---|---|---|---|---|---|---|---|---|---|
M24 × 3 mm | |||||||||
| 50 | Fully Threaded | 39 | 14 | 14 | 120,000 | DIN 7991 | 1 | 000000000 | 000000 |
| 60 | Fully Threaded | 39 | 14 | 14 | 120,000 | DIN 7991 | 1 | 000000000 | 0000 |
| 80 | Fully Threaded | 39 | 14 | 14 | 120,000 | DIN 7991 | 1 | 000000000 | 00000 |
| 90 | Fully Threaded | 39 | 14 | 14 | 120,000 | DIN 7991 | 1 | 000000000 | 00000 |
| 100 | Fully Threaded | 39 | 14 | 14 | 120,000 | DIN 7991 | 1 | 000000000 | 00000 |