Board Spacers, Standoffs

Part Number	Description / PDF	Quantity
13SP264 Richco, Inc. (Essentra Components)	ROUND THROUGH SPACER, NATURAL, N	5000
13RS044109 Richco, Inc. (Essentra Components)	ROUND SPACER, .220 ID, .438 OD,	500
13RS068712 Richco, Inc. (Essentra Components)	ROUND SPACER, .156 ID, .687 OD,	2000
13RS062582 Richco, Inc. (Essentra Components)	ROUND SPACER, .375 ID, .625 OD,	1360
14MMHTSP018 Richco, Inc. (Essentra Components)	HEX THREADED STANDOFF, M4 THREAD	605
15TSP044 Richco, Inc. (Essentra Components)	ROUND STANDOFF, #10-32 THREAD, .	995
SS6-12 Richco, Inc. (Essentra Components)	ROUND SPACER #6 PVC 1-1/2"	2406
R908-7 Richco, Inc. (Essentra Components)	ROUND SPACER NYLON 7/16"	7816
SWI1240A Richco, Inc. (Essentra Components)	ROUND SPACER #4 NYLON 1/2"	1801
13RS098553 Richco, Inc. (Essentra Components)	ROUND SPACER, .650 ID, .984 OD,	1000
13RSSR0068 Richco, Inc. (Essentra Components)	ROUND SPACER, .218 ID, .375 OD,	1984
13RS021025 Richco, Inc. (Essentra Components)	ROUND SPACER, .156 ID, .210 OD,	1930
13RSSR0328 Richco, Inc. (Essentra Components)	ROUND SPACER, .192 ID, .625 OD,	250
13RSSR0254 Richco, Inc. (Essentra Components)	ROUND SPACER, .250 ID, .500 OD,	500
CBTS115A Richco, Inc. (Essentra Components)	HEX STANDOFF M3 NYLON 25MM	0
13RS025062 Richco, Inc. (Essentra Components)	ROUND SPACER, .200 ID, .260 OD,	1840
13RS089036 Richco, Inc. (Essentra Components)	ROUND SPACER, .515 ID, .880 OD,	1000
36632MF200 Richco, Inc. (Essentra Components)	MALE FEMALE THREADED STANDOFF, #	2000
13RS037034 Richco, Inc. (Essentra Components)	ROUND SPACER, .314 ID, .372 OD,	2980
36440MF150 Richco, Inc. (Essentra Components)	MALE FEMALE THREADED STANDOFF, #	1902

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

Type	Functional Features	Application Examples
Cylindrical Spacers	Simple tubular design with uniform diameter	PCB layer separation in consumer electronics
Hexagonal Standoffs	6-sided structure for wrench tightening	Industrial equipment panel mounting
Self-clinching Standoffs	Permanent installation with threaded compression	Sheet metal enclosures in servers
Adjustable Spacers	Variable length through threaded adjustment	Prototype development and testing
Insulated Spacers	Non-conductive materials for electrical isolation	High-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

Parameter	Importance
Material Hardness (HV)	Determines wear resistance and load capacity
Thread Engagement Length	Affects 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 Rating	Prevents 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

Manufacturer	Representative Product
PEM	S-8900 Series self-clinching standoffs
RS Components	486-8826 insulated hexagonal spacers
Mouser Electronics	925206-12 adjustable PCB spacers
McMaster-Carr	91285A102 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