Product Description
The BSO-3.5M3-35ZI is a self-clinching blind threaded standoff engineered to provide long-lasting, reliable threads in thin metal sheets. This fastener is installed by being pressed into a round hole in the sheet, where the self-clinching action causes the metal to cold-flow into the clinching profile, making it a permanent part of the assembly. The blind-thread design is a critical feature, ensuring the outer surface of the sheet remains flush and closed, which protects internal threads from external debris and maintains a clean, professional appearance on the exterior of the chassis. It is constructed from heat-treated carbon steel with a zinc finish to ensure high strength and corrosion resistance.
Closed-End Design: The blind thread prevents the entry of foreign matter and keeps the exterior panel surface unmarred.
Permanent Installation: High pushout and torque-out resistance ensures the fastener stays secure even under mechanical stress.
Space Optimization: Provides a precise 35 mm clearance for stacking or mounting components within an enclosure.
Simplified Assembly: Eliminates the need for welding, tapping, or additional hardware like nuts and washers.
Material Compatibility: Designed specifically for use in metal sheets with a hardness of HRB 80 or less.
Product Specs
- SKU:
- BSO-3.5M3-35ZI
- Part Number:
- BSO-3.5M3-35ZI
- Thread Size x Pitch:
- M3 x 0.5
- Thread Code:
- 3.5M3
- Length Code:
- 35
- Length (L):
- 35 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
- Minimum Distance from Hole Centerline to Edge:
- 6.80 mm
- Internal Thread Specification:
- ANSI/ASME B1.13M, 6H
