Product Description
The BSO-3.5M3-8ZI is a self-clinching blind threaded standoff designed to provide permanent and reliable threads in thin metal sheets. This fastener utilizes a unique clinching profile that, when pressed into a round hole, causes the sheet material to cold-flow into the pilot, making the standoff an integral part of the chassis. The blind-thread (closed-end) design ensures that the outer sheet surface remains flush and sealed, which effectively prevents the ingress of dust or moisture while maintaining a clean, professional aesthetic. Manufactured from heat-treated carbon steel with a zinc finish, it is ideal for precise spacing and secure component mounting in high-performance hardware applications.
Closed-End Design: Provides a sealed barrier to protect internal threads and keeps the exterior panel surface flush.
Self-Clinching Installation: Offers high pushout and torque-out resistance, ensuring the fastener remains secure under mechanical stress.
No Secondary Operations: Eliminates the need for tapping, welding, or additional loose hardware like nuts and washers.
Flush External Appearance: Ensures a smooth, unmarred finish on the mounting side of the metal sheet.
Consistent Spacing: Provides a precise 8 mm standoff height for uniform internal component clearance.
Product Specs
- SKU:
- BSO-3.5M3-8ZI
- Part Number:
- BSO-3.5M3-8ZI
- Thread Size x Pitch:
- M3 x 0.5
- Thread Code:
- 3.5M3
- Length Code:
- 8
- Length (L):
- 8 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:
- RB 80 / HB 150
- Minimum Distance from Hole Centerline to Edge:
- 6.80 mm
- Internal Thread Specification:
- ANSI/ASME B1.13M, 6H
- Dimension H (Nominal):
- 6.4 mm
