Self-Retaining Spacers

Self retaining spacers are used to insulate the heads of screws on a PCB (printed circuit board), while providing the desired spacing between the chassis and the PCB.

How do self retaining spacers work?

Self retaining spacers are similar to round spacers or hex spacers, but with special inside diameters that are designed to grip the screw's outside shank. They have snap-in mounting mechanisms that ensure the required space is maintained even when a screw is removed.

The snap-in standoff snaps into the PCB so that it’s locked in position. Self retaining spacers are designed to raise stacked sections, reduce physical contact between two components and create enough space for heat dissipation. Self retaining spacers are available in several spacing heights to suit different applications.

What are self retaining spacers used for?

Self retaining spacers are used in applications that require precise control of product lengths and dimensions. Some typical applications include:

  • PCBs
  • Cable assemblies
  • Telecommunication equipment
  • Computer enclosures
  • Electronic automotive assemblies
  • LED positioning

...
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Description Price Body Height Fixing Screw Size Chassis Hole Diameter PCB Hole Diameter PCB Thickness Material
RS Stock No. 663-3520
Mfr. Part No.SRS-4-8-01
BrandRichco
TWD7
Each (In a Pack of 40)
units
12.7mm M3 3mm 4.7mm 1.57mm Nylon
RS Stock No. 663-3508
Mfr. Part No.SRS-4-2-01
BrandRichco
TWD10
Each (In a Pack of 40)
units
3.2mm M3 3mm 4.7mm 1.57mm Nylon
RS Stock No. 906-3669
Mfr. Part No.SRS-4-205
BrandBivar
TWD23
Each (In a Pack of 50)
units
5.2mm M3 3.7mm 2.9mm - PVC
RS Stock No. 906-3643
Mfr. Part No.SRS-1-3MM
BrandBivar
TWD5
Each (In a Pack of 500)
units
3mm #4 3.6mm 2.7mm - PVC
RS Stock No. 906-3631
Mfr. Part No.SRS-1-315
BrandBivar
TWD2
Each (In a Pack of 500)
units
8mm #4 3.6mm 2.7mm - PVC
RS Stock No. 663-3527
Mfr. Part No.SRS-4-7-01
BrandRichco
TWD10
Each (In a Pack of 40)
units
11.1mm M3 3mm 4.7mm 1.57mm Nylon
RS Stock No. 663-3514
Mfr. Part No.SRS-4-5-01
BrandRichco
TWD11
Each (In a Pack of 40)
units
7.9mm M3 3mm 4.7mm 1.57mm Nylon
RS Stock No. 906-3625
Mfr. Part No.SRS-1-220
BrandBivar
TWD5
Each (In a Pack of 500)
units
5.6mm #4 3.6mm 2.7mm - PVC
RS Stock No. 906-3634
Mfr. Part No.SRS-1-250
BrandBivar
TWD2
Each (In a Pack of 500)
units
6.4mm #4 3.6mm 2.7mm - PVC
RS Stock No. 906-3671
Mfr. Part No.SRS-4-410
BrandBivar
TWD6
Each (In a Pack of 100)
units
10.4mm M3 3.7mm 2.9mm - PVC
RS Stock No. 663-3530
Mfr. Part No.SRS-6-6-01
BrandRichco
TWD9
Each (In a Pack of 40)
units
9.5mm M3.5 3.5mm 5.9mm 1.57mm Nylon
RS Stock No. 663-3518
Mfr. Part No.SRS-4-6-01
BrandRichco
TWD11
Each (In a Pack of 40)
units
9.5mm M3 3mm 4.7mm 1.57mm Nylon
RS Stock No. 906-3628
Mfr. Part No.SRS-1-190
BrandBivar
TWD4
Each (In a Pack of 500)
units
4.8mm #4 3.6mm 2.7mm - PVC
RS Stock No. 663-3524
Mfr. Part No.SRS-6-10-01
BrandRichco
TWD5
Each (In a Pack of 40)
units
15.9mm M3.5 3.5mm 5.9mm 1.57mm Nylon
RS Stock No. 663-3511
Mfr. Part No.SRS-4-4-01
BrandRichco
TWD9
Each (In a Pack of 40)
units
6.4mm M3 3mm 4.7mm 1.57mm Nylon
RS Stock No. 906-3653
Mfr. Part No.SRS-2-145
BrandBivar
TWD19
Each (In a Pack of 50)
units
3.7mm #6 4.4mm 3.1mm - PVC
RS Stock No. 906-3647
Mfr. Part No.SRS-1-420
BrandBivar
TWD4
Each (In a Pack of 500)
units
10.7mm #4 3.6mm 2.7mm - PVC
RS Stock No. 906-3675
Mfr. Part No.SRS-4-5MM
BrandBivar
TWD6
Each (In a Pack of 100)
units
5mm M3 3.7mm 2.9mm - PVC
RS Stock No. 663-3542
Mfr. Part No.SRS-6-8-01
BrandRichco
TWD9
Each (In a Pack of 40)
units
12.7mm M3.5 3.5mm 5.9mm 1.57mm Nylon
RS Stock No. 906-3621
Mfr. Part No.SRS-1-200
BrandBivar
TWD4
Each (In a Pack of 500)
units
5.1mm #4 3.6mm 2.7mm - PVC