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Fastener Strength Grade/Class Fastener StrengthGrade/Class |
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More
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.
Zinc-aluminum-coated steel screws are 40 times as corrosion resistant as zinc-plated screws and comparable to Magni-coated screws. They withstand 1,000 hours of salt spray per ASTM B117.
Coarse threads are the industry standard; choose these screws if you don’t know the pitch or threads per inch. 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.
Screws that meet ASTM A574, ASTM A574M, and ISO 898-1 comply with specifications and testing requirements for material quality. 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 | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
6-32 | |||||||||||
Zinc-Aluminum Coated Alloy Steel | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 000000 |
3/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
1/2" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 0000 |
5/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
3/4" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
7/8" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
1" | Fully Threaded | __ | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
1 1/4" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
1 1/2" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
1 3/4" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
2" | Partially Threaded | 3/4" | Coarse | 0.226" | 0.138" | 7/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
8-32 | |||||||||||
Zinc-Aluminum Coated Alloy Steel | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 000000 |
3/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1/2" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
5/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
3/4" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
7/8" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1" | Fully Threaded | __ | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1 1/4" | Partially Threaded | 7/8" | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1 1/2" | Partially Threaded | 7/8" | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 0000 |
1 3/4" | Partially Threaded | 7/8" | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
2" | Partially Threaded | 7/8" | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
2 1/2" | Partially Threaded | 7/8" | Coarse | 0.27" | 0.164" | 9/64" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 10 | 000000000 | 00000 |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
10-24 | |||||||||||
Zinc-Aluminum Coated Alloy Steel | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
3/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
1/2" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
5/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
3/4" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
7/8" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1" | Fully Threaded | __ | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1 1/4" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 0000 |
1 1/2" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1 3/4" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 0000 |
2" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
2 1/4" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 10 | 000000000 | 0000 |
2 1/2" | Partially Threaded | 7/8" | Coarse | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 10 | 000000000 | 0000 |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
10-32 | |||||||||||
Zinc-Aluminum Coated Alloy Steel | |||||||||||
3/8" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
1/2" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
3/4" | Fully Threaded | __ | Fine | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
1" | Partially Threaded | 7/8" | Fine | 5/16" | 0.19" | 5/32" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 00000 |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
1/4"-20 | |||||||||||
Zinc-Aluminum Coated Alloy Steel | |||||||||||
1/4" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 25 | 000000000 | 00000 |
3/8" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
1/2" | Fully Threaded | __ | Coarse | 3/8" | 1/4" | 3/16" | 170,000 | ASME B18.3, ASTM A574, ASTM B117 | 50 | 000000000 | 0000 |
Head | ||||||||||
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Lg. | Threading | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg. | Threading | Min. Thread Lg. | Thread Spacing | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg., mm | Threading | Min. Thread Lg., mm | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | ||||||||||
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Lg., mm | Threading | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg., mm | Threading | Min. Thread Lg., mm | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | ||||||||||
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Lg., mm | Threading | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | |||||||||||
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Lg., mm | Threading | Min. Thread Lg., mm | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | ||||||||||
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Lg., mm | Threading | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |
Head | ||||||||||
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Lg., mm | Threading | Thread Spacing | Dia., mm | Ht., mm | Drive Size, mm | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. |