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Steel Socket Head Screws
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Fully Threaded |
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Partially Threaded |
Made of alloy steel, these screws are the standard for high-strength fastening. Use them in high-load applications such as dies, presses, and heavy equipment. The deep, six-point socket keeps the hex key from slipping out and damaging the drive.
Length is measured from under the head.
Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
Head | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | ||||||||||
1 1/4"-7 | ||||||||||
| 2 1/2" | 1 7/8" | 1 1/4" | Fully Threaded | Coarse | 170,000 | 1 | 91251A937 | 000000 | ||
| 3" | 1 7/8" | 1 1/4" | Fully Threaded | Coarse | 170,000 | 1 | 91251A938 | 00000 | ||
| 3 1/4" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 90044A211 | 00000 | ||
| 3 1/2" | 1 7/8" | 1 1/4" | Fully Threaded | Coarse | 170,000 | 1 | 91251A939 | 00000 | ||
| 3 3/4" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 90044A212 | 00000 | ||
| 4" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A940 | 00000 | ||
| 4 1/4" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A401 | 00000 | ||
| 4 1/2" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A941 | 00000 | ||
| 5" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A942 | 00000 | ||
| 5 1/2" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A943 | 00000 | ||
| 6" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A944 | 00000 | ||
| 6 1/2" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A945 | 00000 | ||
| 7" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A021 | 00000 | ||
| 7 1/2" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A967 | 00000 | ||
| 8" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A948 | 00000 | ||
| 9" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A023 | 00000 | ||
| 10" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A949 | 00000 | ||
| 11" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A025 | 00000 | ||
| 12" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A950 | 00000 | ||
| 16" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A996 | 000000 | ||
| 20" | 1 7/8" | 1 1/4" | Partially Threaded | Coarse | 170,000 | 1 | 91251A954 | 000000 | ||
Stainless Steel Socket Head Screws
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Partially Threaded |
These screws won't rust or corrode when exposed to moisture and chemicals. Their deep, six-point socket keeps hex keys from slipping out and damaging the drive.
Length is measured from under the head.
18-8 Stainless Steel—The choice for wet and outdoor environments, these screws won't rust. However, they don't hold up to the harsh chemicals that 316 stainless steel screws can.
Steel Hex-Drive Flat Head Screws
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Our strongest hex-drive flat head screws. They're made of alloy steel, so they have nearly twice the tensile strength of other screws. With six contact points, the hex drive withstands more torque than slotted and Phillips to securely grip your driver without slipping and stripping the drive.
Length is measured from the top of the head.
Black-Oxide Alloy Steel—Typically chosen for their appearance, these screws have a dark, matte coating to create a finished look. They offer minimal corrosion resistance, so they're best for dry environments.
Standard Profile—Standard-profile heads are the most common choice for flat head screws.
Head | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Lg. | Countersink Angle | Flat Head Profile | Dia. | Ht. | Threading | Tensile Strength, psi | Specs. Met | Certificate Type | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | |||||||||||||
1 1/4"-7 | |||||||||||||
| 3" | 82° | Standard | 2.438" | 0.683" | Fully Threaded | 130,000 | ASTM F835 | — | 1 | 91253A985 | 000000 | ||
| 3 1/2" | 82° | Standard | 2.438" | 0.683" | Fully Threaded | 130,000 | ASTM F835 | Material Certificate | 1 | 91253A011 | 00000 | ||
| 4" | 82° | Standard | 2.438" | 0.683" | Fully Threaded | 130,000 | ASTM F835 | — | 1 | 91253A986 | 00000 | ||
| 5" | 82° | Standard | 2.438" | 0.683" | Partially Threaded | 130,000 | ASTM F835 | — | 1 | 91253A987 | 00000 | ||
Steel Cup-Tip Set Screws
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Lg. | Drive Size | Hardness | Specs. Met | Pkg. Qty. | Pkg. | |||
|---|---|---|---|---|---|---|---|---|
Black-Oxide Alloy Steel | ||||||||
1 1/4"-7 | ||||||||
| 1 1/4" | 5/8" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 91375A603 | 000000 | ||
| 1 1/2" | 5/8" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 91375A613 | 00000 | ||
| 2" | 5/8" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 91375A629 | 00000 | ||
| 3" | 5/8" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 91375A647 | 00000 | ||
| 4" | 5/8" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 91375A657 | 00000 | ||
Alloy Steel | ||||||||
1 1/4"-7 | ||||||||
| 1" | 5/8" | Rockwell C45 | ASME B18.3, ASTM F912 | 1 | 91375A935 | 00000 | ||
