Product Description
The PEM® B-0420-1ZI is a self-clinching blind nut designed to provide strong, load-bearing threads in thin aluminum or steel sheets. This fastener features a closed-end (blind) design that creates a barrier against contaminants, protecting internal threads from dust, dirt, and liquids. It also functions as a limit for screw penetration, preventing damage to internal components. The part is installed by being squeezed into a prepared hole using a standard press; the host material then cold-flows into an undercut to permanently lock the fastener in place with high torque-out and pushout resistance. Once installed, the mounting sheet remains flush on the reverse side, maintaining a clean external profile.
Closed-End Design: Provides a seal against environmental contaminants and protects delicate internal components from screw over-insertion.
Permanent Attachment: The self-clinching process ensures the nut is integrated into the sheet, providing high resistance to torque and pushout forces.
Flush Finish: Installation leaves the back side of the host sheet entirely flush, allowing for space-saving and aesthetic designs.
Thread Protection: The blind cavity ensures that external debris cannot enter the assembly through the fastener.
High Strength: Designed for use in sheets with a hardness of HRB 80 / HB 150 or less, offering reliable performance in metal assemblies.
Product Specs
- SKU:
- B-0420-1ZI
- Part Number:
- B-0420-1ZI
- Thread Size:
- .250-20 (1/4-20)
- Thread Specification:
- 2B, ASME B1.1
- Thread Type:
- Internal, Non-locking, Closed-end
- Fastener Material:
- Heat-Treated Carbon Steel
- Standard Finish:
- Zinc plated with a clear chromate (ZI)
- Shank Code:
- 1
- Minimum Sheet Thickness:
- .040 in (1.02 mm)
- Hole Size in Sheet:
- .375 in (+.003 -.000)
- Minimum Distance Hole Centerline to Edge:
- .375 in
- For Use in Sheet Hardness:
- HRB 80 / HB 150 or less
- Maximum Screw Penetration:
- .200 in
