3/16" Round Spacers (M-106)
3/16" round spacers are unthreaded cylindrical spacers with a clearance bore, sized to hold a 3/16" gap between PCBs, panels, and chassis surfaces. A bolt passes straight through the body and threads into a nut or tapped hole at the other end. The spacer simply fills the gap. At 3/16", this sits between the minimal 1/8" clearance of the smallest standoffs and the more widely specified 1/4" size.
Round Spacers vs. Threaded Standoffs
The key difference is how the assembly is fastened. A spacer has no threads. A through-bolt does all the clamping, passing through the clearance bore and securing at each end of the stack. Nothing to thread into the spacer, nothing to torque at the spacer body.Threaded standoffs are a better fit when individual boards or panels need their own fastening points, or when the design calls for removing a single board without taking apart the rest of the assembly. For a straightforward through-bolt setup, a spacer is faster and simpler.
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Key Features
- Unthreaded clearance bore for pass-through bolt assembly
- 3/16" body length for sub-1/4" board clearance requirements
- Round cylindrical body for a compact, low-profile footprint
- Available in aluminum or stainless steel
- Consistent body dimensions for repeatable height control
- Accommodates screws up to size 10
Applications for 3/16" Round Spacers
- PCB mounting where 1/4" clearance is too much and 1/8" is too little
- Panel and chassis spacing in compact electronic enclosures
- Light mechanical assemblies requiring precise, sub-1/4" height separation
- Electrically insulating spacers between conductive surfaces (nylon)
- Prototyping and R&D setups with specific clearance requirements
Selection Guidance
- Spacer vs. Standoff: Use a spacer when a single bolt controls the full height gap. If each mounting point needs independent threaded fastening, a hex or round female standoff is the better choice.
- Why 3/16"? This size addresses clearance requirements that fall between standard options. If 1/4" works, use the M-107. If your design genuinely needs less clearance than that, verify this body length fits before ordering.
- Material Selection: Aluminum is lightweight and features a high strength-to-weight ratio. Stainless steel is corrosions resistant and very high-strength.
- Clearance Bore: Verify bore diameter against your fastener size before ordering. Full dimensional data is in the product listing.
