Board Spacers, Standoffs

Part Number	Description / PDF	Quantity
13RS098554 Richco, Inc. (Essentra Components)	ROUND SPACER, .604 ID, .984 OD,	2000
13RS072051 Richco, Inc. (Essentra Components)	ROUND SPACER, .420 ID, .716 OD,	0
13RS028038 Richco, Inc. (Essentra Components)	ROUND SPACER, .125 ID, .280 OD,	955
13RS098550 Richco, Inc. (Essentra Components)	ROUND SPACER, .352 ID, .980 OD,	1000
13RS075012 Richco, Inc. (Essentra Components)	ROUND SPACER, .260 ID, .750 OD,	2000
13RSSR0011 Richco, Inc. (Essentra Components)	ROUND SPACER, .115 ID, .188 OD,	1780
QM7 Richco, Inc. (Essentra Components)	RND STNDFF #10-32 NEOPRENE 9/16"	955
HTS4-10-48 Richco, Inc. (Essentra Components)	HEX STANDOFF #4-40 NYLON 5/8"	104
005474059914 Richco, Inc. (Essentra Components)	RND SPACER #10 POLYSTYRENE 25MM	1975
13RSSR0017 Richco, Inc. (Essentra Components)	ROUND SPACER, .115 ID, .188 OD,	975
13RS125313 Richco, Inc. (Essentra Components)	ROUND SPACER, .761 ID, 1.239 OD,	1000
SS8-8L Richco, Inc. (Essentra Components)	ROUND SPACER #8 PVC 1"	914
13SP045 Richco, Inc. (Essentra Components)	ROUND THROUGH SPACER, NATURAL, N	40390
13RS070082 Richco, Inc. (Essentra Components)	ROUND SPACER, .333 ID, .698 OD,	500
13SP087 Richco, Inc. (Essentra Components)	ROUND SPACER, .091 ID, .250 OD,	2500
005468000014 Richco, Inc. (Essentra Components)	RND SPACER #10 POLYSTYRENE 20MM	4800
36632MF131 Richco, Inc. (Essentra Components)	MALE FEMALE THREADED STANDOFF,#6	1000
R908-8 Richco, Inc. (Essentra Components)	ROUND SPACER NYLON 1/2"	3314
36M40MF020 Richco, Inc. (Essentra Components)	MALE FEMALE THREADED STANDOFF, M	980
13RS050010 Richco, Inc. (Essentra Components)	ROUND SPACER, .320 ID, .500 OD,	3500

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