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Captive Panel Screw - Type 4

Captive Panel Screws are designed to remain attached even if unscrewed when used with a captive panel retainer. Most commonly used on control panel doors to keep the door screwed shut during normal operating conditions. When access is needed, unthreading the screw allows for the door to be open, while the retainer keeps the screw attached to the door. Perfect for applications where a lost screw poses safety or cost concerns. All Lyn-Tron Captive Panel Screws come in multiple head designs, varying shank lengths and diameters, and all common thread sizes. With so many options, you are sure to find the right screw for your application.

#2-56 Captive Panel Screw - Type 4

1/8"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3799 Steel #2-56 1/8" 3/32" 1/4" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 3/32"
  • Under Head Length: 1/4"
  • Washer Length: 1/16"
ST3800 Steel #2-56 1/8" 5/32" 5/16" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 5/32"
  • Under Head Length: 5/16"
  • Washer Length: 1/16"
ST3801 Steel #2-56 1/8" 7/32" 3/8" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 7/32"
  • Under Head Length: 3/8"
  • Washer Length: 1/16"
ST3802 Steel #2-56 1/8" 9/32" 7/16" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 9/32"
  • Under Head Length: 7/16"
  • Washer Length: 1/16"
ST3803 Steel #2-56 1/8" 11/32" 1/2" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 11/32"
  • Under Head Length: 1/2"
  • Washer Length: 1/16"
ST3804 Steel #2-56 1/8" 13/32" 9/16" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 13/32"
  • Under Head Length: 9/16"
  • Washer Length: 1/16"
ST3805 Steel #2-56 1/8" 15/32" 5/8" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 15/32"
  • Under Head Length: 5/8"
  • Washer Length: 1/16"
ST3806 Steel #2-56 1/8" 17/32" 11/16" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 17/32"
  • Under Head Length: 11/16"
  • Washer Length: 1/16"
ST3807 Steel #2-56 1/8" 19/32" 3/4" 1/16"
  • Material: Steel
  • Male Thread: #2-56
  • Head Diameter: 1/8"
  • Shank Length: 19/32"
  • Under Head Length: 3/4"
  • Washer Length: 1/16"

#3-48 Captive Panel Screw - Type 4

5/32"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3808 Steel #3-48 5/32" 3/32" 1/4" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 3/32"
  • Under Head Length: 1/4"
  • Washer Length: 0.070"
ST3809 Steel #3-48 5/32" 5/32" 5/16" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 5/32"
  • Under Head Length: 5/16"
  • Washer Length: 0.070"
ST3810 Steel #3-48 5/32" 7/32" 3/8" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 7/32"
  • Under Head Length: 3/8"
  • Washer Length: 0.070"
ST3811 Steel #3-48 5/32" 9/32" 7/16" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 9/32"
  • Under Head Length: 7/16"
  • Washer Length: 0.070"
ST3812 Steel #3-48 5/32" 11/32" 1/2" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 11/32"
  • Under Head Length: 1/2"
  • Washer Length: 0.070"
ST3813 Steel #3-48 5/32" 13/32" 9/16" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 13/32"
  • Under Head Length: 9/16"
  • Washer Length: 0.070"
ST3814 Steel #3-48 5/32" 15/32" 5/8" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 15/32"
  • Under Head Length: 5/8"
  • Washer Length: 0.070"
ST3815 Steel #3-48 5/32" 17/32" 11/16" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 17/32"
  • Under Head Length: 11/16"
  • Washer Length: 0.070"
ST3816 Steel #3-48 5/32" 19/32" 3/4" 0.070"
  • Material: Steel
  • Male Thread: #3-48
  • Head Diameter: 5/32"
  • Shank Length: 19/32"
  • Under Head Length: 3/4"
  • Washer Length: 0.070"

#4-40 Captive Panel Screw - Type 4

11/64"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3817 Steel #4-40 11/64" 1/16" 1/4" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 1/16"
  • Under Head Length: 1/4"
  • Washer Length: 0.079"
ST3818 Steel #4-40 11/64" 1/8" 5/16" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 1/8"
  • Under Head Length: 5/16"
  • Washer Length: 0.079"
ST3819 Steel #4-40 11/64" 3/16" 3/8" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 3/16"
  • Under Head Length: 3/8"
  • Washer Length: 0.079"
ST3820 Steel #4-40 11/64" 1/4" 7/16" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 1/4"
  • Under Head Length: 7/16"
  • Washer Length: 0.079"
ST3821 Steel #4-40 11/64" 5/16" 1/2" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 5/16"
  • Under Head Length: 1/2"
  • Washer Length: 0.079"
ST3822 Steel #4-40 11/64" 3/8" 9/16" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 3/8"
  • Under Head Length: 9/16"
  • Washer Length: 0.079"
ST3823 Steel #4-40 11/64" 7/16" 5/8" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 7/16"
  • Under Head Length: 5/8"
  • Washer Length: 0.079"
ST3824 Steel #4-40 11/64" 1/2" 11/16" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 1/2"
  • Under Head Length: 11/16"
  • Washer Length: 0.079"
ST3825 Steel #4-40 11/64" 9/16" 3/4" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 9/16"
  • Under Head Length: 3/4"
  • Washer Length: 0.079"
ST3826 Steel #4-40 11/64" 5/8" 13/16" 0.079"
  • Material: Steel
  • Male Thread: #4-40
  • Head Diameter: 11/64"
  • Shank Length: 5/8"
  • Under Head Length: 13/16"
  • Washer Length: 0.079"

#6-32 Captive Panel Screw - Type 4

7/32"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3830 Steel #6-32 7/32" 3/32" 5/16" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 3/32"
  • Under Head Length: 5/16"
  • Washer Length: 0.096"
ST3831 Steel #6-32 7/32" 5/32" 3/8" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 5/32"
  • Under Head Length: 3/8"
  • Washer Length: 0.096"
ST3832 Steel #6-32 7/32" 7/32" 7/16" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 7/32"
  • Under Head Length: 7/16"
  • Washer Length: 0.096"
ST3833 Steel #6-32 7/32" 9/32" 1/2" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 9/32"
  • Under Head Length: 1/2"
  • Washer Length: 0.096"
ST3834 Steel #6-32 7/32" 11/32" 9/16" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 11/32"
  • Under Head Length: 9/16"
  • Washer Length: 0.096"
ST3835 Steel #6-32 7/32" 13/32" 5/8" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 13/32"
  • Under Head Length: 5/8"
  • Washer Length: 0.096"
ST3836 Steel #6-32 7/32" 15/32" 11/16" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 15/32"
  • Under Head Length: 11/16"
  • Washer Length: 0.096"
ST3837 Steel #6-32 7/32" 17/32" 3/4" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 17/32"
  • Under Head Length: 3/4"
  • Washer Length: 0.096"
ST3838 Steel #6-32 7/32" 19/32" 13/16" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 19/32"
  • Under Head Length: 13/16"
  • Washer Length: 0.096"
ST3839 Steel #6-32 7/32" 21/32" 7/8" 0.096"
  • Material: Steel
  • Male Thread: #6-32
  • Head Diameter: 7/32"
  • Shank Length: 21/32"
  • Under Head Length: 7/8"
  • Washer Length: 0.096"

#8-32 Captive Panel Screw - Type 4

1/4"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3842 Steel #8-32 1/4" 3/32" 5/16" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 3/32"
  • Under Head Length: 5/16"
  • Washer Length: 0.113"
ST3843 Steel #8-32 1/4" 5/32" 3/8" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 5/32"
  • Under Head Length: 3/8"
  • Washer Length: 0.113"
ST3844 Steel #8-32 1/4" 7/32" 7/16" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 7/32"
  • Under Head Length: 7/16"
  • Washer Length: 0.113"
ST3845 Steel #8-32 1/4" 9/32" 1/2" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 9/32"
  • Under Head Length: 1/2"
  • Washer Length: 0.113"
ST3846 Steel #8-32 1/4" 11/32" 9/16" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 11/32"
  • Under Head Length: 9/16"
  • Washer Length: 0.113"
ST3847 Steel #8-32 1/4" 13/32" 5/8" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 13/32"
  • Under Head Length: 5/8"
  • Washer Length: 0.113"
ST3848 Steel #8-32 1/4" 15/32" 11/16" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 15/32"
  • Under Head Length: 11/16"
  • Washer Length: 0.113"
ST3849 Steel #8-32 1/4" 17/32" 3/4" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 17/32"
  • Under Head Length: 3/4"
  • Washer Length: 0.113"
ST3850 Steel #8-32 1/4" 19/32" 13/16" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 19/32"
  • Under Head Length: 13/16"
  • Washer Length: 0.113"
ST3851 Steel #8-32 1/4" 21/32" 7/8" 0.113"
  • Material: Steel
  • Male Thread: #8-32
  • Head Diameter: 1/4"
  • Shank Length: 21/32"
  • Under Head Length: 7/8"
  • Washer Length: 0.113"

#10-24 Captive Panel Screw - Type 4

5/16"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3858 Steel #10-24 5/16" 3/32" 3/8" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 3/32"
  • Under Head Length: 3/8"
  • Washer Length: 0.130"
ST3859 Steel #10-24 5/16" 5/32" 7/16" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 5/32"
  • Under Head Length: 7/16"
  • Washer Length: 0.130"
ST3860 Steel #10-24 5/16" 7/32" 1/2" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 7/32"
  • Under Head Length: 1/2"
  • Washer Length: 0.130"
ST3861 Steel #10-24 5/16" 9/32" 9/16" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 9/32"
  • Under Head Length: 9/16"
  • Washer Length: 0.130"
ST3862 Steel #10-24 5/16" 11/32" 5/8" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 11/32"
  • Under Head Length: 5/8"
  • Washer Length: 0.130"
ST3863 Steel #10-24 5/16" 13/32" 11/16" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 13/32"
  • Under Head Length: 11/16"
  • Washer Length: 0.130"
ST3864 Steel #10-24 5/16" 15/32" 3/4" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 15/32"
  • Under Head Length: 3/4"
  • Washer Length: 0.130"
ST3865 Steel #10-24 5/16" 17/32" 13/16" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 17/32"
  • Under Head Length: 13/16"
  • Washer Length: 0.130"
ST3866 Steel #10-24 5/16" 19/32" 7/8" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 19/32"
  • Under Head Length: 7/8"
  • Washer Length: 0.130"
ST3867 Steel #10-24 5/16" 21/32" 15/16" 0.130"
  • Material: Steel
  • Male Thread: #10-24
  • Head Diameter: 5/16"
  • Shank Length: 21/32"
  • Under Head Length: 15/16"
  • Washer Length: 0.130"

#10-32 Captive Panel Screw - Type 4

5/16"

Part Number Material Male Thread Head Diameter Shank Length Under Head Length Washer Length Details
ST3877 Steel #10-32 5/16" 3/32" 3/8" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 3/32"
  • Under Head Length: 3/8"
  • Washer Length: 0.130"
ST3878 Steel #10-32 5/16" 5/32" 7/16" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 5/32"
  • Under Head Length: 7/16"
  • Washer Length: 0.130"
ST3879 Steel #10-32 5/16" 7/32" 1/2" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 7/32"
  • Under Head Length: 1/2"
  • Washer Length: 0.130"
ST3880 Steel #10-32 5/16" 9/32" 9/16" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 9/32"
  • Under Head Length: 9/16"
  • Washer Length: 0.130"
ST3881 Steel #10-32 5/16" 11/32" 5/8" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 11/32"
  • Under Head Length: 5/8"
  • Washer Length: 0.130"
ST3882 Steel #10-32 5/16" 13/32" 11/16" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 13/32"
  • Under Head Length: 11/16"
  • Washer Length: 0.130"
ST3883 Steel #10-32 5/16" 15/32" 3/4" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 15/32"
  • Under Head Length: 3/4"
  • Washer Length: 0.130"
ST3884 Steel #10-32 5/16" 17/32" 13/16" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 17/32"
  • Under Head Length: 13/16"
  • Washer Length: 0.130"
ST3885 Steel #10-32 5/16" 19/32" 7/8" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 19/32"
  • Under Head Length: 7/8"
  • Washer Length: 0.130"
ST3886 Steel #10-32 5/16" 21/32" 15/16" 0.130"
  • Material: Steel
  • Male Thread: #10-32
  • Head Diameter: 5/16"
  • Shank Length: 21/32"
  • Under Head Length: 15/16"
  • Washer Length: 0.130"