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Board Spacers, Standoffs

Image Part Number Description / PDF Quantity Rfq
MFTS6-20-48

MFTS6-20-48

Richco, Inc. (Essentra Components)

HEX STANDOFF #6-32 NYLON 1-1/4"

453
HTS6-4-48

HTS6-4-48

Richco, Inc. (Essentra Components)

HEX STANDOFF #6-32 NYLON 1/4"

966
13RS075076

13RS075076

Richco, Inc. (Essentra Components)

ROUND SPACER, .320 ID, .750 OD,

1000
13RS050016

13RS050016

Richco, Inc. (Essentra Components)

ROUND SPACER, .265 ID, .500 OD,

4000
13RS034008

13RS034008

Richco, Inc. (Essentra Components)

ROUND SPACER, .281 ID, .343 OD,

3000
MSW1180A

MSW1180A

Richco, Inc. (Essentra Components)

ROUND SPACER M6 NYLON 1/8"

0
R937-1

R937-1

Richco, Inc. (Essentra Components)

ROUND SPACER NYLON 1/16"

5990
13RS062589

13RS062589

Richco, Inc. (Essentra Components)

ROUND SPACER, .250 ID, .625 OD,

1961
13SPRT059

13SPRT059

Richco, Inc. (Essentra Components)

ROUND SPACER, RETAINING, #4 SCRE

2000
13RS037574

13RS037574

Richco, Inc. (Essentra Components)

ROUND SPACER, .250 ID, .375 OD,

2000
13RS050040

13RS050040

Richco, Inc. (Essentra Components)

ROUND SPACER, .344 ID, .500 OD,

2000
R902-5

R902-5

Richco, Inc. (Essentra Components)

ROUND SPACER NYLON 5/16"

4975
13RS126210

13RS126210

Richco, Inc. (Essentra Components)

ROUND SPACER, 1.043 ID, 1.262 OD

1000
15TSP023

15TSP023

Richco, Inc. (Essentra Components)

ROUND STANDOFF, #10-32 THREAD, .

2000
13RSSR0342

13RSSR0342

Richco, Inc. (Essentra Components)

ROUND SPACER, .315 ID, .750 OD,

250
SS3/8-2

SS3/8-2

Richco, Inc. (Essentra Components)

ROUND SPACER M9 PVC 1/4"

0
13RS050000

13RS050000

Richco, Inc. (Essentra Components)

ROUND SPACER, .250 ID, .500 OD,

1000
35HSP007

35HSP007

Richco, Inc. (Essentra Components)

HEX SELF THREAD STANDOFF, #6 SCR

1982
NS-03-12

NS-03-12

Richco, Inc. (Essentra Components)

ROUND SPACER NYLON 19MM

1992
13SP057

13SP057

Richco, Inc. (Essentra Components)

ROUND THROUGH SPACER, NATURAL, N

21606

Board Spacers, Standoffs

1. Overview

Board spacers and standoffs are specialized hardware components used to create controlled spacing between printed circuit boards (PCBs), panels, or structural elements. They provide mechanical support, electrical isolation, and thermal management in electronic assemblies. Their importance in modern technology includes enabling compact designs, reducing vibration stress, and improving heat dissipation in devices ranging from smartphones to industrial control systems.

2. Main Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Cylindrical SpacersSimple tubular design with uniform diameterPCB layer separation in consumer electronics
Hexagonal Standoffs6-sided structure for wrench tighteningIndustrial equipment panel mounting
Self-clinching StandoffsPermanent installation with threaded compressionSheet metal enclosures in servers
Adjustable SpacersVariable length through threaded adjustmentPrototype development and testing
Insulated SpacersNon-conductive materials for electrical isolationHigh-voltage power supply assemblies

3. Structure & Composition

Typical construction includes:

  • Material: Stainless steel (corrosion resistance), aluminum (lightweight), or nylon (insulation)
  • Geometry: Cylindrical (standard), stepped (for multiple board heights), or flanged (for load distribution)
  • Installation Features: Internal threading (male/female), knurled surfaces (for grip), or press-fit tabs
  • Surface Treatment: Passivation (metal), UV resistance (plastics), or EMI shielding coating

4. Key Technical Specifications

ParameterImportance
Material Hardness (HV)Determines wear resistance and load capacity
Thread Engagement LengthAffects vibration resistance in dynamic environments
Thermal Conductivity (W/m K)Critical for heat dissipation in power electronics
Dielectric Strength (kV/mm)Safety factor in high-voltage applications
Installation Torque RatingPrevents over-tightening damage to PCBs

5. Application Fields

Primary industries include:

  • Electronics Manufacturing: Server racks, LED displays
  • Automotive: Engine control units (ECUs), ADAS systems
  • Aerospace: Satellite PCB mounting, avionics enclosures
  • Medical Devices: MRI scanner internal structures
  • Consumer Electronics: Smartphone PCB stacking

6. Leading Manufacturers & Products

ManufacturerRepresentative Product
PEMS-8900 Series self-clinching standoffs
RS Components486-8826 insulated hexagonal spacers
Mouser Electronics925206-12 adjustable PCB spacers
McMaster-Carr91285A102 stainless steel standoffs

7. Selection Recommendations

  • Evaluate mechanical load requirements vs material strength
  • Match thread type (UNC/UNF/Metric) with assembly hardware
  • Consider CTE (Coefficient of Thermal Expansion) compatibility with PCB materials
  • Select insulated variants for >50V circuits
  • Use vibration-damping coatings in mobile applications

8. Industry Trends

Emerging developments include:

  • Miniaturization: Sub-1mm spacers for wearable devices
  • Material Innovation: Conductive polymer composites for EMI shielding
  • Smart Integration: Standoffs with embedded strain gauges for structural monitoring
  • Automated Installation: Self-aligning designs for robotic assembly lines
  • Sustainability: Biodegradable plastic options (PLA-based) entering mainstream production
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