Product Description
The BSO-440-26ZI is a self-clinching blind threaded standoff designed for permanent installation in thin metal sheets. Utilizing a proven clinching profile, the fastener is pressed into a round hole using a standard squeeze action, which causes the sheet material to cold-flow into the pilot. The blind-thread feature is a vital attribute, ensuring that the outer sheet surface remains flush and closed, providing a clean, unmarred appearance while effectively sealing the assembly against environmental contaminants. Manufactured from heat-treated carbon steel with a zinc finish, it is ideal for applications requiring specific spacing and secure component mounting in metal chassis.
Sealed Exterior: Blind threading ensures the reverse side of the panel remains flush and closed to prevent the entry of dust or moisture.
Permanent Attachment: The self-clinching design provides high pushout and torque-out resistance once installed in the metal sheet.
Flush Finish: Maintains a smooth, professional exterior appearance on the mounting side of the assembly.
Hardware Efficiency: Reduces the need for secondary operations like tapping or welding and eliminates loose hardware like nuts or washers.
Extended Spacing: Provides a precise .812 in standoff height for consistent internal component clearance.
Product Specs
- SKU:
- BSO-440-26ZI
- Part Number:
- BSO-440-26ZI
- Thread Size:
- .112-40 (#4-40)
- Thread Code:
- 440
- Length Code:
- 26
- Length (L):
- .812 in
- Material:
- Heat-Treated Carbon Steel
- Finish:
- Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
- Hole Size in Sheet:
- .166 in
- Minimum Sheet Thickness:
- .040 in
- Maximum Sheet Hardness:
- HRB 80 / HB 150
- Minimum Distance from Hole Centerline to Edge:
- .27 in
- Internal Thread Specification:
- Unified Class 2B, ANSI B1.1
