1/4" Round Female Standoffs
1/4" round female standoffs are cylindrical threaded spacers with tapped bores on both ends, designed to maintain a precise 1/4" gap between PCBs, panels, and electronic components. The round cylindrical body occupies less lateral space than a hex standoff at the same thread size, making these a practical choice for high-density PCB layouts and compact enclosures with limited cross-body clearance.
These standoffs are commonly used in consumer electronics, instrumentation, and production board assemblies where a clean, low-profile hardware appearance and minimal footprint are priorities.
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What Are Round Female Standoffs?
Round female standoffs accept threaded fasteners from each end without a pass-through male post. They hold a PCB to a chassis, or two panels at a fixed gap, with individual screws at each face. The cylindrical body has a smaller cross-section than a comparable hex standoff, which is a meaningful advantage in dense PCB layouts where adjacent components are closely spaced.Male-female standoffs are the preferred option for board stacking, where the male post supports continuous vertical assembly. Unthreaded round spacers are a simpler alternative for clearance-hole assemblies where a bolt passes through the body rather than threading into it.
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Key Features
- Cylindrical body for a compact, low-profile cross-section
- Smaller body diameter than hex standoffs at equivalent thread sizes
- Female-female threading accepts screws on both ends
- Available in nylon, aluminum, brass, and stainless steel
- Nylon construction provides electrical insulation for PCB-sensitive assemblies
- Precision-tapped bores ensure consistent 1/4" spacing
Applications
1/4" round female standoffs are used across a range of low-profile and high-density assembly applications:- Low-profile PCB mounting in compact and consumer electronics enclosures
- Panel separation in instrumentation and handheld devices
- High-density board layouts where hex body width causes clearance issues
- RF shield mounting with tight lateral clearance requirements
- Prototyping and evaluation board builds
Selection Guidance
- Round vs. Hex Body: Round standoffs have a smaller body diameter than hex standoffs at the same thread size - an important consideration in dense PCB layouts or where adjacent components are closely spaced. Choose hex bodies where wrench tightening is required, or anti-rotation is a priority during installation.
- Standoff vs. Spacer: Round female standoffs are threaded and require fasteners at each end. If your application only needs height separation for a pass-through bolt, an unthreaded round spacer is a simpler option.
- Material Selection: Nylon is appropriate for insulating, lightweight applications. Brass is better for high-cycle assemblies where thread durability matters. Stainless steel suits corrosive or high-strength environments. Aluminum balances weight and structural performance.
- Measuring Spacing: Body length equals the standoff's height contribution. Account for PCB thickness and fastener dimensions in full stack calculations.
