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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 3/8"-6 | ||||||||||
| 5" | 2 1/16" | 1 3/8" | Fully Threaded | Coarse | 170,000 | 1 | 91251A771 | 000000 | ||
| 6" | 2 1/16" | 1 3/8" | Partially Threaded | Coarse | 170,000 | 1 | 91251A773 | 00000 | ||
| 8" | 2 1/16" | 1 3/8" | Partially Threaded | Coarse | 170,000 | 1 | 91251A775 | 000000 | ||
| 10" | 2 1/16" | 1 3/8" | Partially Threaded | Coarse | 170,000 | 1 | 91251A778 | 000000 | ||
| 12" | 2 1/16" | 1 3/8" | Partially Threaded | Coarse | 170,000 | 1 | 91251A780 | 000000 | ||
1 1/2"-6 | ||||||||||
| 3" | 2 1/4" | 1 1/2" | Fully Threaded | Coarse | 170,000 | 1 | 91251A034 | 00000 | ||
| 3 1/4" | 2 1/4" | 1 1/2" | Fully Threaded | Coarse | 170,000 | 1 | 91251A429 | 00000 | ||
| 3 1/2" | 2 1/4" | 1 1/2" | Fully Threaded | Coarse | 170,000 | 1 | 91251A955 | 00000 | ||
| 4" | 2 1/4" | 1 1/2" | Fully Threaded | Coarse | 170,000 | 1 | 91251A956 | 00000 | ||
| 4 1/2" | 2 1/4" | 1 1/2" | Fully Threaded | Coarse | 170,000 | 1 | 91251A961 | 00000 | ||
| 5" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A958 | 00000 | ||
| 5 1/2" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A962 | 00000 | ||
| 6" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A960 | 00000 | ||
| 6 1/2" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A036 | 00000 | ||
| 7" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A053 | 00000 | ||
| 8" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A963 | 00000 | ||
| 9" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A058 | 00000 | ||
| 10" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A964 | 00000 | ||
| 12" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A976 | 00000 | ||
| 14" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A979 | 000000 | ||
| 18" | 2 1/4" | 1 1/2" | Partially Threaded | Coarse | 170,000 | 1 | 91251A981 | 000000 | ||
1 1/2"-12 | ||||||||||
| 3" | 2 1/4" | 1 1/2" | Fully Threaded | Fine | 170,000 | 1 | 91251A607 | 00000 | ||
| 3 1/2" | 2 1/4" | 1 1/2" | Fully Threaded | Fine | 170,000 | 1 | 91251A035 | 00000 | ||
| 4" | 2 1/4" | 1 1/2" | Fully Threaded | Fine | 170,000 | 1 | 91251A608 | 00000 | ||
| 4 1/2" | 2 1/4" | 1 1/2" | Fully Threaded | Fine | 170,000 | 1 | 91251A641 | 00000 | ||
| 5" | 2 1/4" | 1 1/2" | Partially Threaded | Fine | 170,000 | 1 | 91251A609 | 00000 | ||
| 5 1/2" | 2 1/4" | 1 1/2" | Partially Threaded | Fine | 170,000 | 1 | 91251A643 | 00000 | ||
| 6" | 2 1/4" | 1 1/2" | Partially Threaded | Fine | 170,000 | 1 | 91251A610 | 00000 | ||
| 7" | 2 1/4" | 1 1/2" | Partially Threaded | Fine | 170,000 | 1 | 91251A611 | 00000 | ||
| 8" | 2 1/4" | 1 1/2" | Partially Threaded | Fine | 170,000 | 1 | 91251A612 | 00000 | ||
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 | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | ||||||||||||
1 1/2"-6 | ||||||||||||
| 4" | 82° | Standard | 2.938" | 0.827" | Fully Threaded | 130,000 | ASTM F835 | 1 | 91253A989 | 000000 | ||
| 5" | 82° | Standard | 2.938" | 0.827" | Partially Threaded | 130,000 | ASTM F835 | 1 | 91253A990 | 00000 | ||
| 6" | 82° | Standard | 2.938" | 0.827" | Partially Threaded | 130,000 | ASTM F835 | 1 | 91253A991 | 00000 | ||
Angled-Drive Ball-Tip L-Keys
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Turn screws at an angle when you can’t access them head on. These L-keys have a ball tip on the long leg that engages the drive with less contact than a straight tip. Ball tips are handy for corners and tightly packed areas, such as control panels and junction boxes. However, they don’t grip as tightly as straight tips and may strip the drive of the fastener if you crank them too hard. These L-keys are precision manufactured to tight tolerances.
Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.
Long—The most common option, these L-keys have a balanced length for everyday reach and torque.
Length | Ball | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Drive Size | Overall | Relative | Long Leg | Short Leg | Location | Shape | Finish | Max. Access Angle | Each | |||
Alloy Steel | ||||||||||||
Hex | ||||||||||||
| 1" | 15 1/4" | Long | 14 1/4" | 2 5/8" | Single Ball | Round | Black Phosphate Coated | 25° | 5503A34 | 000000 | ||
L-Keys
