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Steel Socket Head Screws
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Fully Threaded | 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—Best for dry environments since moisture will cause these screws to rust. They have a dark, matte appearance.
Head, mm | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
Lg., mm | Dia. | Ht. | Threading | Thread Spacing | Tensile Strength, psi | Fastener Strength Grade/Class | Pkg. Qty. | Pkg. | |||
Black-Oxide Alloy Steel | |||||||||||
M42 × 4.5 mm | |||||||||||
| 100 | 63 | 42 | Fully Threaded | Coarse | 170,000 | Class 12.9 | 1 | 91290A287 | 000000 | ||
| 120 | 63 | 42 | Fully Threaded | Coarse | 170,000 | Class 12.9 | 1 | 91290A288 | 00000 | ||
| 180 | 63 | 42 | Partially Threaded | Coarse | 170,000 | Class 12.9 | 1 | 91290A289 | 00000 | ||
| 200 | 63 | 42 | Partially Threaded | Coarse | 170,000 | Class 12.9 | 1 | 91290A294 | 00000 | ||
L-Keys
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The highest quality L-keys you can buy for tightening and loosening screws. Our L-keys are precision manufactured to tight tolerances for an exact fit.
Alloy Steel—These L-keys handle high torque without bending or breaking, so they’ll last a lifetime.
Short—A short long leg fits into tight spaces where you have less room to swing, making these ideal for confined areas.
Long—The most common option, these L-keys have a balanced length for everyday reach and torque.
