Product Description
The BSO-3.5M3-22ZI is a self-clinching blind threaded standoff designed to provide permanent, high-strength threads in thin metal sheets. Utilizing a unique clinching profile, the fastener is pressed into a round hole using a standard squeeze action, which results in the cold flow of sheet material into the standoff's pilot. Because the threads are blind (closed-end), the outer sheet surface remains smooth and flush, ensuring a sealed barrier against dust and moisture while maintaining a clean aesthetic. This model is fabricated from heat-treated carbon steel with a zinc plating, offering a robust solution for spacing and mounting components in hardware assemblies.
Blind-Threaded Design: Ensures the reverse side of the panel remains flush and closed.
Self-Clinching Installation: Becomes a permanent part of the assembly without the need for welding or additional adhesives.
High Torque-Out Resistance: Designed to withstand significant mechanical stress once installed in thin sheets.
Flush External Appearance: Provides a professional, unmarred finish on the exterior of the chassis.
Metric Compatibility: Features an M3 thread specification ideal for international electronic and industrial standards.
Product Specs
- SKU:
- BSO-3.5M3-22ZI
- Part Number:
- BSO-3.5M3-22ZI
- Thread Size x Pitch:
- M3 x 0.5
- Thread Code:
- 3.5M3
- Length Code:
- 22
- Length (L):
- 22 mm (+0.05 mm / -0.13 mm)
- Material:
- Heat-Treated Carbon Steel
- Finish:
- Zinc plated per ASTM B633, SC1 (5µm), Type III, colorless
- Hole Size in Sheet:
- 5.41 mm (+ 0.08 mm)
- Minimum Sheet Thickness:
- 1.00 mm
- Maximum Sheet Hardness:
- HRB 80 / HB 150 (on the Rockwell B scale)
- Minimum Distance from Hole Centerline to Edge:
- 6.80 mm
- Internal Thread Specification:
- ANSI/ASME B1.13M, 6H
