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SHCS 5/16“-18 Alloy Steel Socket Head Screws
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Fully Threaded |
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 and black-oxide steel screws are mildly corrosion resistant in dry environments. Zinc-plated steel screws resist corrosion in wet environments. 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. 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 B18.3.1M, 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. |
Partially Threaded | ||
Material | Steel|Stainless Steel|Plastic|Brass|Titanium | SCM435 |Stainless steel | | |
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Head Type SHCS |
Use a standard 1/4" Allen key |
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Thread Direction | Right Hand |
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SHCS 5/16"-18 Black-Oxide Alloy Steel / SHCS 5/16"-18 Zinc-Plated Alloy Steel / SHCS 5/16"-18 Zinc-Aluminum Coated Alloy Steel / SHCS 5/16"-18 Stainless Steel |
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Lg. | Threading | Min. Thread Lg. |
Thread Spacing |
Dia. | Ht. | Drive Size |
Tensile Strength, psi |
Specifications Met |
Pkg. Qty. |
Numbering | Pkg | ||||||||||||
1/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A575 | Contact us for a quote | ||||||||||||
5/16" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A577 | |||||||||||||
3/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A576 | |||||||||||||
7/16" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A522 | |||||||||||||
1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A578 | |||||||||||||
9/16" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASME B18.3, ASTM A574 | 1000 | 90044A427 | Contact us for a quote | ||||||||||||
5/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A580 | |||||||||||||
11/16" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASME B18.3, ASTM A574 | 1000 | 90044A428 | |||||||||||||
3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A581 | |||||||||||||
7/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A582 | |||||||||||||
1" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A583 | Contact us for a quote | ||||||||||||
1 1/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A613 | |||||||||||||
1 1/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A585 | |||||||||||||
1 3/8" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A620 | |||||||||||||
1 1/2" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A587 | |||||||||||||
1 5/8" | Partially Threaded | 1 1/8" | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A299 | Contact us for a quote | ||||||||||||
1 3/4" | Fully Threaded | __ | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 90044A138 | |||||||||||||
1 3/4" | Partially Threaded | 1 1/8" | Coarse | 15/32" | 5/16" | 1/4" | 170,000 | ASTM A574 | 1000 | 91251A589 |
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