OneMonroe’s Lyn-tron brand Socket Precision Shoulder Screws are proudly manufactured in the USA and built to meet the highest engineering standards. Known for their superior accuracy, strength, and consistency, these screws are ideal for applications requiring precise alignment and rotational motion.
Each Lyn-tron shoulder screw features a tightly controlled shoulder diameter and length tolerance, making them a trusted solution for die sets, precision machinery, electronics, and robotics. The hex socket drive ensures secure installation, while the premium materials used in production—such as stainless steel or alloy steel—offer excellent durability and corrosion resistance.
Backed by decades of American manufacturing excellence, Lyn-tron Socket Precision Shoulder Screws are a go-to choice for engineers and OEMs who demand reliable, high-performance fasteners for their assemblies.
| Items |
 BR7401-00 Socket Precision Shoulder Screw |
BR7402-00 Socket Precision Shoulder Screw |
BR7403-00 Socket Precision Shoulder Screw |
BR7404-00 Socket Precision Shoulder Screw |
BR7405-00 Socket Precision Shoulder Screw |
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| OD | 1/4 | |||||||||
| Head Diameter | 1/4 | |||||||||
| Shoulder Diameter | 0.1245 | |||||||||
| Material | Brass | |||||||||
| REF Shoulder Diameter | 1/8 | |||||||||
| Male Thread | 4-40 | |||||||||
| Head Length | 1/8 | |||||||||
| Shoulder Length | 0.125 | 0.1875 | 0.25 | 0.3125 | 0.375 | |||||
| Thread Length | 5/32 | |||||||||
| REF Shoulder Length | 1/8 | 3/16 | 1/4 | 5/16 | 3/8 | |||||
| Socket | 5/64 | |||||||||
| Socket Depth | 1/16 | |||||||||
| Part Description | 1/8 x 1/8 Socket Precision Shoulder Screw | 1/8 x 3/16 Socket Precision Shoulder Screw | 1/8 x 1/4 Socket Precision Shoulder Screw | 1/8 x 5/16 Socket Precision Shoulder Screw | 1/8 x 3/8 Socket Precision Shoulder Screw | |||||
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