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OneMonroe’s Lyn-tron Captive Panel Screws are proudly manufactured in the USA and engineered for reliable, secure fastening in electronic enclosures, panels, and industrial assemblies. Designed to remain attached to the panel even when disengaged, these captive screws eliminate the risk of lost hardware and improve serviceability in high-vibration or maintenance-intensive environments.

Crafted with precision and available in a variety of thread sizes, head styles, and finishes, Lyn-tron Captive Panel Screws offer a clean, professional look with consistent performance. These screws are ideal for use in aerospace, defense, telecom, and rack-mounted systems where retention and durability are critical.

As part of the trusted Lyn-tron brand, our captive panel screws are CNC-machined to tight tolerances and meet demanding quality standards. Whether you're building custom equipment or retrofitting existing hardware, you can count on OneMonroe’s American-made quality and engineering expertise.

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Item #

OD

Head Diameter

Shank DIA

Point Diameter

Male Thread

Head Length

Thread Length

Point Length

Material

Knurl TPI

Style

Quantity
SS3491-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3492-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3493-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3494-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3495-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3496-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3497-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3498-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3499-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3500-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3501-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3502-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3503-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3504-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3505-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3506-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3507-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3508-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3509-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3510-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3511-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3512-00 N/A 1/2 N/A 1/2 N/A .175 N/A .175 N/A 1/4-28 N/A 9/16 N/A 5/16 N/A 3/16 N/A Stainless Steel N/A 30 N/A Thin Head
SS3513-00 N/A 5/8 N/A 5/8 N/A .230 N/A .230 N/A 5/16-18 N/A 11/16 N/A 3/8 N/A 1/4 N/A Stainless Steel N/A 30 N/A Thin Head
SS3514-00 N/A 5/8 N/A 5/8 N/A .230 N/A .230 N/A 5/16-18 N/A 11/16 N/A 3/8 N/A 1/4 N/A Stainless Steel N/A 30 N/A Thin Head
SS3515-00 N/A 5/8 N/A 5/8 N/A .230 N/A .230 N/A 5/16-18 N/A 11/16 N/A 3/8 N/A 1/4 N/A Stainless Steel N/A 30 N/A Thin Head
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