About Socket Head Screws
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Torx Alloy Steel Socket Head Screws
A Torx-Plus drive has more points of contact than a hex drive, allowing you to tighten these screws with less slippage or damage to the recess. With a tensile strength of 180,000 psi, these alloy steel screws are stronger than Grade 8 steel screws. Their black-oxide finish provides mild corrosion resistance in dry environments. They can be used with both Torx-Plus and standard Torx tools (see Torx bits and Torx keys and drivers). Screws meet ASTM A574 specifications and testing requirements for material quality. Length is measured from under the head.
Coarse threads are the industry standard; choose these screws if you don’t know the threads per inch.
For technical drawings and 3-D models, click on a part number.
Head | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| Lg. | Threading | Min. Thread Lg. | Thread Spacing  | Dia. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Black-Oxide Alloy Steel | |||||||||||
3/8"-16 | |||||||||||
| 1" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | IP50 | 180,000 | ASTM A574 | 25 | 000000000 | 000000 |
| 1 1/2" | Fully Threaded | __ | Coarse | 9/16" | 3/8" | IP50 | 180,000 | ASTM A574 | 25 | 000000000 | 00000 |
| 2 1/4" | Partially Threaded | 1 1/4" | Coarse | 9/16" | 3/8" | IP50 | 180,000 | ASTM A574 | 10 | 000000000 | 00000 |
Torx-Plus Bits
The six rounded points fit the star-shaped recess of Torx-Plus screws. These bits have a similar profile to Torx but are not recommended for use with standard Torx screws.
Hex shank bits (also known as insert bits) are used in hand drivers or with a bit adapter in power tools.
For technical drawings and 3-D models, click on a part number.
| Drive Size | Overall Lg. | Material | Each | |
5/16" Hex Shank Size | ||||
|---|---|---|---|---|
| IP50 | 1 1/4" | Steel | 00000000 | 00000 |