Filter by
System of Measurement
Thread Size
Specifications Met
Fastener Head Type
Threading
Drive Style
Thread Type
Material
Finish
Tensile Strength
DFARS Specialty Metals
Export Control Classification Number (ECCN)
REACH
RoHS
Thread Direction
Certification
Thread Spacing
Hardness
Drive Size
Thread Fit
About Hex Head Screws and Bolts
More
High-Strength Steel Hex Head Screws with Phillips Drive
When clearance for a wrench is limited, these screws have a Phillips drive so you can install them with a screwdriver. With a tensile strength of 160,000 psi, they are stronger than Grade 8 screws and can be used in high-stress applications, such as valves, pumps, motors, and automotive suspension systems. The cadmium plating provides good corrosion resistance to salt water. Screws meet NAS (National Aerospace Standards) specifications for material and construction. Length is measured from under the head.
Match the thread spacing of mating components. 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  | Wd. | Ht. | Drive Size | Tensile Strength, psi | Specifications Met | Pkg. Qty. | Pkg. | |
Cadmium-Plated Steel | |||||||||||
4-40 | |||||||||||
| 1/2" | Partially Threaded | 7/16" | Coarse | 3/16" | 1/16" | No. 1 | 160,000 | NAS1801-04-8 | 10 | 000000000 | 000000 |