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Captive Panel Retainer - Type A

Captive Panel Retainers offer a retaining option for captive panel screws. These are commonly used in sheet metal when a threaded hole is not able to be manufactured into the panels. Multiple styles of captive panel retainers available allow for different installation methods, the use of retaining rings and springs further securing the products.

Types of Captive Panel Retainers

All Lyn-Tron Captive Panel Retainer types come in multiple materials, varying shank lengths and captive panel thickness, and all common thread sizes. With so many Captive Panel retainer options and types, you are sure to find the right retainer to mate with your screw for your application, equipment, and parts.

Our Captive Panel Retainer types A products are manufactured from several types of materials:

  • Brass captive panel
  • Stainless steel captive panel
  • Steel captive panel

Lyn-Tron's captive panel retainers also come with several options, for type A:

  • Installation type
    • Press Fit will use the Knurl and be pressed into the hole to be held in place.
  • Retaining style
    • Threaded Retainers have a shallow female thread that the screw is threaded through. Once the screw is completely threaded through, the female thread functions as the retainer, preventing the screw from coming.
  • Spring tensioned
    • Some Panel Screw Retainers are designed for use with a spring. The spring works to keep the screw out of the way when not engaged and will also provide some vibration resistance to the assembly. A small counterbore is machined on the back of these retainers to accept the spring.

Contact Us About Captive Panel Retainers or Lyn-Tron's Custom Services Questions

Lyn-Tron has been manufacturing electronic components and hardware item supplies for various sorts of equipment and products for over 50 years! All Lyn-Tron electronic hardware is made in the USA and held to the highest quality standards.

Feel free to contact us today if you have any questions about selecting Type A captive panel retainers for your project, our services, any specs, or would like to request custom parts or OEM-designed hardware manufactured to your print.

1/4" Captive Panel Retainer - Type A

#4-40

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR000-050 Steel #4-40 0.200" 0.050" 0.198" 0.048"-0.072"
  • Material: Steel
  • Thread: #4-40
  • Body Length: 0.200"
  • Shank Length: 0.050"
  • Shank OD: 0.198"
  • Panel Thickness: 0.048"-0.072"
STR000-080 Steel #4-40 0.170" 0.080" 0.198" 0.074"-0.109"
  • Material: Steel
  • Thread: #4-40
  • Body Length: 0.170"
  • Shank Length: 0.080"
  • Shank OD: 0.198"
  • Panel Thickness: 0.074"-0.109"
STR000-125 Steel #4-40 0.125" 0.125" 0.198" 0.119"-0.156"
  • Material: Steel
  • Thread: #4-40
  • Body Length: 0.125"
  • Shank Length: 0.125"
  • Shank OD: 0.198"
  • Panel Thickness: 0.119"-0.156"

#6-32

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR001-050 Steel #6-32 0.262" 0.050" 0.198" 0.048"-0.072"
  • Material: Steel
  • Thread: #6-32
  • Body Length: 0.262"
  • Shank Length: 0.050"
  • Shank OD: 0.198"
  • Panel Thickness: 0.048"-0.072"
STR001-080 Steel #6-32 0.232" 0.080" 0.198" 0.074"-0.109"
  • Material: Steel
  • Thread: #6-32
  • Body Length: 0.232"
  • Shank Length: 0.080"
  • Shank OD: 0.198"
  • Panel Thickness: 0.074"-0.109"
STR001-125 Steel #6-32 0.187" 0.125" 0.198" 0.119"-0.156"
  • Material: Steel
  • Thread: #6-32
  • Body Length: 0.187"
  • Shank Length: 0.125"
  • Shank OD: 0.198"
  • Panel Thickness: 0.119"-0.156"
STR001-188 Steel #6-32 0.124" 0.188" 0.198" 0.188"-0.188"
  • Material: Steel
  • Thread: #6-32
  • Body Length: 0.124"
  • Shank Length: 0.188"
  • Shank OD: 0.198"
  • Panel Thickness: 0.188"-0.188"

5/16" Captive Panel Retainer - Type A

#8-32

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR002-050 Steel #8-32 0.262" 0.050" 0.228" 0.048"-0.072"
  • Material: Steel
  • Thread: #8-32
  • Body Length: 0.262"
  • Shank Length: 0.050"
  • Shank OD: 0.228"
  • Panel Thickness: 0.048"-0.072"
STR002-080 Steel #8-32 0.232" 0.080" 0.228" 0.074"-0.109"
  • Material: Steel
  • Thread: #8-32
  • Body Length: 0.232"
  • Shank Length: 0.080"
  • Shank OD: 0.228"
  • Panel Thickness: 0.074"-0.109"
STR002-125 Steel #8-32 0.187" 0.125" 0.228" 0.119"-0.156"
  • Material: Steel
  • Thread: #8-32
  • Body Length: 0.187"
  • Shank Length: 0.125"
  • Shank OD: 0.228"
  • Panel Thickness: 0.119"-0.156"
STR002-188 Steel #8-32 0.124" 0.188" 0.228" 0.188"-0.188"
  • Material: Steel
  • Thread: #8-32
  • Body Length: 0.124"
  • Shank Length: 0.188"
  • Shank OD: 0.228"
  • Panel Thickness: 0.188"-0.188"

3/8" Captive Panel Retainer - Type A

#10-24

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR003-050 Steel #10-24 0.325" 0.050" 0.280" 0.048"-0.072"
  • Material: Steel
  • Thread: #10-24
  • Body Length: 0.325"
  • Shank Length: 0.050"
  • Shank OD: 0.280"
  • Panel Thickness: 0.048"-0.072"
STR003-080 Steel #10-24 0.295" 0.080" 0.280" 0.074"-0.109"
  • Material: Steel
  • Thread: #10-24
  • Body Length: 0.295"
  • Shank Length: 0.080"
  • Shank OD: 0.280"
  • Panel Thickness: 0.074"-0.109"
STR003-125 Steel #10-24 0.250" 0.125" 0.280" 0.119"-0.156"
  • Material: Steel
  • Thread: #10-24
  • Body Length: 0.250"
  • Shank Length: 0.125"
  • Shank OD: 0.280"
  • Panel Thickness: 0.119"-0.156"
STR003-188 Steel #10-24 0.187" 0.188" 0.280" 0.188"-0.188"
  • Material: Steel
  • Thread: #10-24
  • Body Length: 0.187"
  • Shank Length: 0.188"
  • Shank OD: 0.280"
  • Panel Thickness: 0.188"-0.188"
STR003-250 Steel #10-24 0.125" 0.250" 0.280" 0.250"-0.250"
  • Material: Steel
  • Thread: #10-24
  • Body Length: 0.125"
  • Shank Length: 0.250"
  • Shank OD: 0.280"
  • Panel Thickness: 0.250"-0.250"

#10-32

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR004-050 Steel #10-32 0.325" 0.050" 0.280" 0.048"-0.072"
  • Material: Steel
  • Thread: #10-32
  • Body Length: 0.325"
  • Shank Length: 0.050"
  • Shank OD: 0.280"
  • Panel Thickness: 0.048"-0.072"
STR004-080 Steel #10-32 0.295" 0.080" 0.280" 0.074"-0.109"
  • Material: Steel
  • Thread: #10-32
  • Body Length: 0.295"
  • Shank Length: 0.080"
  • Shank OD: 0.280"
  • Panel Thickness: 0.074"-0.109"
STR004-125 Steel #10-32 0.250" 0.125" 0.280" 0.119"-0.156"
  • Material: Steel
  • Thread: #10-32
  • Body Length: 0.250"
  • Shank Length: 0.125"
  • Shank OD: 0.280"
  • Panel Thickness: 0.119"-0.156"
STR004-188 Steel #10-32 0.187" 0.188" 0.280" 0.188"-0.188"
  • Material: Steel
  • Thread: #10-32
  • Body Length: 0.187"
  • Shank Length: 0.188"
  • Shank OD: 0.280"
  • Panel Thickness: 0.188"-0.188"
STR004-250 Steel #10-32 0.125" 0.250" 0.280" 0.250"-0.250"
  • Material: Steel
  • Thread: #10-32
  • Body Length: 0.125"
  • Shank Length: 0.250"
  • Shank OD: 0.280"
  • Panel Thickness: 0.250"-0.250"

1/2" Captive Panel Retainer - Type A

#1/4-20

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR005-050 Steel #1/4-20 0.387" 0.050" 0.366" 0.048"-0.072"
  • Material: Steel
  • Thread: #1/4-20
  • Body Length: 0.387"
  • Shank Length: 0.050"
  • Shank OD: 0.366"
  • Panel Thickness: 0.048"-0.072"
STR005-080 Steel #1/4-20 0.357" 0.080" 0.366" 0.074"-0.109"
  • Material: Steel
  • Thread: #1/4-20
  • Body Length: 0.357"
  • Shank Length: 0.080"
  • Shank OD: 0.366"
  • Panel Thickness: 0.074"-0.109"
STR005-125 Steel #1/4-20 0.312" 0.125" 0.366" 0.119"-0.156"
  • Material: Steel
  • Thread: #1/4-20
  • Body Length: 0.312"
  • Shank Length: 0.125"
  • Shank OD: 0.366"
  • Panel Thickness: 0.119"-0.156"
STR005-188 Steel #1/4-20 0.249" 0.188" 0.366" 0.188"-0.188"
  • Material: Steel
  • Thread: #1/4-20
  • Body Length: 0.249"
  • Shank Length: 0.188"
  • Shank OD: 0.366"
  • Panel Thickness: 0.188"-0.188"
STR005-250 Steel #1/4-20 0.187" 0.250" 0.366" 0.250"-0.250"
  • Material: Steel
  • Thread: #1/4-20
  • Body Length: 0.187"
  • Shank Length: 0.250"
  • Shank OD: 0.366"
  • Panel Thickness: 0.250"-0.250"

#1/4-28

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR006-050 Steel #1/4-28 0.387" 0.050" 0.366" 0.048"-0.072"
  • Material: Steel
  • Thread: #1/4-28
  • Body Length: 0.387"
  • Shank Length: 0.050"
  • Shank OD: 0.366"
  • Panel Thickness: 0.048"-0.072"
STR006-080 Steel #1/4-28 0.357" 0.080" 0.366" 0.074"-0.109"
  • Material: Steel
  • Thread: #1/4-28
  • Body Length: 0.357"
  • Shank Length: 0.080"
  • Shank OD: 0.366"
  • Panel Thickness: 0.074"-0.109"
STR006-125 Steel #1/4-28 0.312" 0.125" 0.366" 0.119"-0.156"
  • Material: Steel
  • Thread: #1/4-28
  • Body Length: 0.312"
  • Shank Length: 0.125"
  • Shank OD: 0.366"
  • Panel Thickness: 0.119"-0.156"
STR006-188 Steel #1/4-28 0.249" 0.188" 0.366" 0.188"-0.188"
  • Material: Steel
  • Thread: #1/4-28
  • Body Length: 0.249"
  • Shank Length: 0.188"
  • Shank OD: 0.366"
  • Panel Thickness: 0.188"-0.188"
STR006-260 Steel #1/4-28 0.187" 0.250" 0.366" 0.250"-0.250"
  • Material: Steel
  • Thread: #1/4-28
  • Body Length: 0.187"
  • Shank Length: 0.250"
  • Shank OD: 0.366"
  • Panel Thickness: 0.250"-0.250"

5/8" Captive Panel Retainer - Type A

#5/16-18

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR007-050 Steel #5/16-18 0.450" 0.050" 0.414" 0.048"-0.072"
  • Material: Steel
  • Thread: #5/16-18
  • Body Length: 0.450"
  • Shank Length: 0.050"
  • Shank OD: 0.414"
  • Panel Thickness: 0.048"-0.072"
STR007-080 Steel #5/16-18 0.420" 0.080" 0.414" 0.074"-0.109"
  • Material: Steel
  • Thread: #5/16-18
  • Body Length: 0.420"
  • Shank Length: 0.080"
  • Shank OD: 0.414"
  • Panel Thickness: 0.074"-0.109"
STR007-125 Steel #5/16-18 0.375" 0.125" 0.414" 0.119"-0.156"
  • Material: Steel
  • Thread: #5/16-18
  • Body Length: 0.375"
  • Shank Length: 0.125"
  • Shank OD: 0.414"
  • Panel Thickness: 0.119"-0.156"
STR007-188 Steel #5/16-18 0.312" 0.188" 0.414" 0.188"-0.188"
  • Material: Steel
  • Thread: #5/16-18
  • Body Length: 0.312"
  • Shank Length: 0.188"
  • Shank OD: 0.414"
  • Panel Thickness: 0.188"-0.188"
STR007-250 Steel #5/16-18 0.250" 0.250" 0.414" 0.250"-0.250"
  • Material: Steel
  • Thread: #5/16-18
  • Body Length: 0.250"
  • Shank Length: 0.250"
  • Shank OD: 0.414"
  • Panel Thickness: 0.250"-0.250"

3/4" Captive Panel Retainer - Type A

#3/8-16

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
STR008-080 Steel #3/8-16 0.482" 0.080" 0.479" 0.074"-0.109"
  • Material: Steel
  • Thread: #3/8-16
  • Body Length: 0.482"
  • Shank Length: 0.080"
  • Shank OD: 0.479"
  • Panel Thickness: 0.074"-0.109"
STR008-125 Steel #3/8-16 0.437" 0.125" 0.479" 0.119"-0.156"
  • Material: Steel
  • Thread: #3/8-16
  • Body Length: 0.437"
  • Shank Length: 0.125"
  • Shank OD: 0.479"
  • Panel Thickness: 0.119"-0.156"
STR008-188 Steel #3/8-16 0.374" 0.188" 0.479" 0.188"-0.188"
  • Material: Steel
  • Thread: #3/8-16
  • Body Length: 0.374"
  • Shank Length: 0.188"
  • Shank OD: 0.479"
  • Panel Thickness: 0.188"-0.188"
STR008-250 Steel #3/8-16 0.312" 0.250" 0.479" 0.250"-0.250"
  • Material: Steel
  • Thread: #3/8-16
  • Body Length: 0.312"
  • Shank Length: 0.250"
  • Shank OD: 0.479"
  • Panel Thickness: 0.250"-0.250"

7.0mm Captive Panel Retainer - Type A

M3.0x0.5

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
ST5907-1 Steel M3.0x0.5 5.2mm 1.3mm 5.0mm 6.5mm-6.5mm
  • Material: Steel
  • Thread: M3.0x0.5
  • Body Length: 5.2mm
  • Shank Length: 1.3mm
  • Shank OD: 5.0mm
  • Panel Thickness: 6.5mm-6.5mm
ST5907-2 Steel M3.0x0.5 4.3mm 2mm 5.0mm 4.8mm-4.8mm
  • Material: Steel
  • Thread: M3.0x0.5
  • Body Length: 4.3mm
  • Shank Length: 2mm
  • Shank OD: 5.0mm
  • Panel Thickness: 4.8mm-4.8mm
ST5907-3 Steel M3.0x0.5 3.3mm 3.2mm 5.0mm 2.8mm-3.6mm
  • Material: Steel
  • Thread: M3.0x0.5
  • Body Length: 3.3mm
  • Shank Length: 3.2mm
  • Shank OD: 5.0mm
  • Panel Thickness: 2.8mm-3.6mm

M3.5x0.6

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
ST5908-1 Steel M3.5x0.6 6.7mm 1.3mm 5.0mm 6.5mm-6.5mm
  • Material: Steel
  • Thread: M3.5x0.6
  • Body Length: 6.7mm
  • Shank Length: 1.3mm
  • Shank OD: 5.0mm
  • Panel Thickness: 6.5mm-6.5mm
ST5908-2 Steel M3.5x0.6 6mm 2mm 5.0mm 4.8mm-4.8mm
  • Material: Steel
  • Thread: M3.5x0.6
  • Body Length: 6mm
  • Shank Length: 2mm
  • Shank OD: 5.0mm
  • Panel Thickness: 4.8mm-4.8mm
ST5908-3 Steel M3.5x0.6 4.8mm 3.2mm 5.0mm 2.8mm-3.6mm
  • Material: Steel
  • Thread: M3.5x0.6
  • Body Length: 4.8mm
  • Shank Length: 3.2mm
  • Shank OD: 5.0mm
  • Panel Thickness: 2.8mm-3.6mm
ST5908-4 Steel M3.5x0.6 3.2mm 4.8mm 5.0mm 1.9mm-2.8mm
  • Material: Steel
  • Thread: M3.5x0.6
  • Body Length: 3.2mm
  • Shank Length: 4.8mm
  • Shank OD: 5.0mm
  • Panel Thickness: 1.9mm-2.8mm

8.0mm Captive Panel Retainer - Type A

M4.0x0.7

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
ST5909-1 Steel M4.0x0.7 6.7mm 1.3mm 5.8mm 6.5mm-6.5mm
  • Material: Steel
  • Thread: M4.0x0.7
  • Body Length: 6.7mm
  • Shank Length: 1.3mm
  • Shank OD: 5.8mm
  • Panel Thickness: 6.5mm-6.5mm
ST5909-2 Steel M4.0x0.7 6mm 2mm 5.8mm 4.8mm-4.8mm
  • Material: Steel
  • Thread: M4.0x0.7
  • Body Length: 6mm
  • Shank Length: 2mm
  • Shank OD: 5.8mm
  • Panel Thickness: 4.8mm-4.8mm
ST5909-3 Steel M4.0x0.7 4.8mm 3.2mm 5.8mm 2.8mm-3.6mm
  • Material: Steel
  • Thread: M4.0x0.7
  • Body Length: 4.8mm
  • Shank Length: 3.2mm
  • Shank OD: 5.8mm
  • Panel Thickness: 2.8mm-3.6mm
ST5909-4 Steel M4.0x0.7 3.2mm 4.8mm 5.8mm 1.9mm-2.8mm
  • Material: Steel
  • Thread: M4.0x0.7
  • Body Length: 3.2mm
  • Shank Length: 4.8mm
  • Shank OD: 5.8mm
  • Panel Thickness: 1.9mm-2.8mm

10.0mm Captive Panel Retainer - Type A

M5.0x0.8

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
ST5910-1 Steel M5.0x0.8 8.2mm 1.3mm 7.1mm 6.5mm-6.5mm
  • Material: Steel
  • Thread: M5.0x0.8
  • Body Length: 8.2mm
  • Shank Length: 1.3mm
  • Shank OD: 7.1mm
  • Panel Thickness: 6.5mm-6.5mm
ST5910-2 Steel M5.0x0.8 7.5mm 2mm 7.1mm 4.8mm-4.8mm
  • Material: Steel
  • Thread: M5.0x0.8
  • Body Length: 7.5mm
  • Shank Length: 2mm
  • Shank OD: 7.1mm
  • Panel Thickness: 4.8mm-4.8mm
ST5910-3 Steel M5.0x0.8 6.3mm 3.2mm 7.1mm 2.8mm-3.6mm
  • Material: Steel
  • Thread: M5.0x0.8
  • Body Length: 6.3mm
  • Shank Length: 3.2mm
  • Shank OD: 7.1mm
  • Panel Thickness: 2.8mm-3.6mm
ST5910-4 Steel M5.0x0.8 4.7mm 4.8mm 7.1mm 1.9mm-2.8mm
  • Material: Steel
  • Thread: M5.0x0.8
  • Body Length: 4.7mm
  • Shank Length: 4.8mm
  • Shank OD: 7.1mm
  • Panel Thickness: 1.9mm-2.8mm
ST5910-5 Steel M5.0x0.8 3.1mm 6.4mm 7.1mm 1.2mm-1.8mm
  • Material: Steel
  • Thread: M5.0x0.8
  • Body Length: 3.1mm
  • Shank Length: 6.4mm
  • Shank OD: 7.1mm
  • Panel Thickness: 1.2mm-1.8mm

13.0mm Captive Panel Retainer - Type A

M6.0x1.0

Part Number Material Thread Body Length Shank Length Shank OD Panel Thickness Details
ST5911-1 Steel M6.0x1.0 9.7mm 1.3mm 9.3mm 6.5mm-6.5mm
  • Material: Steel
  • Thread: M6.0x1.0
  • Body Length: 9.7mm
  • Shank Length: 1.3mm
  • Shank OD: 9.3mm
  • Panel Thickness: 6.5mm-6.5mm
ST5911-2 Steel M6.0x1.0 9mm 2mm 9.3mm 4.8mm-4.8mm
  • Material: Steel
  • Thread: M6.0x1.0
  • Body Length: 9mm
  • Shank Length: 2mm
  • Shank OD: 9.3mm
  • Panel Thickness: 4.8mm-4.8mm
ST5911-3 Steel M6.0x1.0 7.8mm 3.2mm 9.3mm 2.8mm-3.6mm
  • Material: Steel
  • Thread: M6.0x1.0
  • Body Length: 7.8mm
  • Shank Length: 3.2mm
  • Shank OD: 9.3mm
  • Panel Thickness: 2.8mm-3.6mm
ST5911-4 Steel M6.0x1.0 6.2mm 4.8mm 9.3mm 1.9mm-2.8mm
  • Material: Steel
  • Thread: M6.0x1.0
  • Body Length: 6.2mm
  • Shank Length: 4.8mm
  • Shank OD: 9.3mm
  • Panel Thickness: 1.9mm-2.8mm
ST5911-5 Steel M6.0x1.0 4.6mm 6.4mm 9.3mm 1.2mm-1.8mm
  • Material: Steel
  • Thread: M6.0x1.0
  • Body Length: 4.6mm
  • Shank Length: 6.4mm
  • Shank OD: 9.3mm
  • Panel Thickness: 1.2mm-1.8mm