OneMonroe’s Lyn-tron brand Plain Thumb Screws are proudly manufactured in the USA, offering precision-engineered performance and reliability for a wide range of industrial and electronic applications. Designed for tool-free operation, these screws feature a knurled head for easy manual tightening and loosening, making them ideal for quick adjustments and frequent assembly and disassembly.
Crafted from high-quality materials and built to exacting standards, Lyn-tron Plain Thumb Screws provide consistent grip and durability even in demanding environments. Whether used in enclosures, panels, or machinery, these thumb screws deliver both convenience and dependable fastening. Available in a variety of thread sizes and lengths, they are the perfect choice when ease of use and American-made quality are critical.
| Items |
 BR7620-00 Plain Thumb Screw |
BR7621-00 Plain Thumb Screw |
BR7622-00 Plain Thumb Screw |
BR7623-00 Plain Thumb Screw |
BR7624-00 Plain Thumb Screw |
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| Material | Brass | |||||||||
| OD | 5/16 | |||||||||
| Head Diameter | 5/16 | |||||||||
| Male Thread | 4-40 | 4-40 | 4-40 | 4-40 | 6-32 | |||||
| OAL | 1/2 | 9/16 | 5/8 | 11/16 | 1/2 | |||||
| Head Length | 3/16 | |||||||||
| Thread Length | 5/16 | 3/8 | 7/16 | 1/2 | 5/16 | |||||
| Part Description | 4-40 Male Thread x 5/16 Thread Length Brass Plain Thumb Screw | 4-40 Male Thread x 3/8 Thread Length Brass Plain Thumb Screw | 4-40 Male Thread x 7/16 Thread Length Brass Plain Thumb Screw | 4-40 Male Thread x 1/2 Thread Length Brass Plain Thumb Screw | 6-32 Male Thread x 5/16 Thread Length Brass Plain Thumb Screw | |||||
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