Description
Type B Self Tapping Sheet Metal Screws provide reliable fastening for thin gauge sheet metal assemblies. Sized #8 x 3/8 inch, this screw features a serrated indented hex washer head, an unslotted drive, and a zinc bake finish on steel.
Specs
- Dimensions: Diameter #8, Length 3/8 inch
- Finish: Zinc & Bake
- Drive type: Unslotted (internal hex drive)
- Material grade: Steel
- Thread type: Type B self-tapping
Features
- Self-tapping design: Forms mating threads in sheet metal without pre-drilling, enabling fast, secure assemblies in limited-access or retrofit scenarios.
- Head style: Serrated indented hex washer head provides heightened load distribution and anti-rotation performance in applications subject to vibration.
- Drive configuration: Unslotted drive paired with hex driver minimizes cam-out and tool damage when installed with a compatible hex bit.
- Finish: Zinc plating with bake-on coating delivers corrosion resistance in typical service environments and improves surface hardness around the washer region.
- Material: Steel substrate ensures strength and rigidity; compatible with zinc bake finish for consistent coating coverage.
- Use cases: Ideal for fastening metal panels, enclosures, ductwork, electrical boxes, and automotive trim where sheet thickness supports self-tapping screws.
- Installation considerations: Ensure material thickness aligns with screw length; apply appropriate torque to avoid thread stripping and ensure secure seating of the washer.
- Comparative notes: Internal hex drive (unslotted) offers improved torque transfer with hex keys over slotted variants; serrated washer aids grip and reduces loosening under vibration compared with plain washer heads.
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