{"product_id":"stepper-shaft-coupler-3mm-4mm-brass","title":"Double Pass Brass Universal Adapter Coupling 3mm x 4mm","description":"\u003cdiv class=\"product_info\"\u003e\n\u003ch2 class=\"sing--sub-heading\"\u003eDouble Pass Brass Universal Adapter Coupling 3mm × 4mm – Stepper Shaft Coupler\u003c\/h2\u003e\nThe \u003cstrong\u003estepper shaft coupler\u003c\/strong\u003e offers a reliable way to join shafts of different diameters while ensuring smooth torque delivery. This brass design supports compact mechanical systems that benefit from stable \u003cstrong\u003emotor coupling\u003c\/strong\u003e performance. Because it transfers rotation efficiently, it also works well in projects that require secure \u003cstrong\u003eelectric motor shaft coupling\u003c\/strong\u003e alignment. \u003cbr\u003e\u003cbr\u003eIn addition, the \u003cstrong\u003estepper shaft coupler\u003c\/strong\u003e uses M3 securing screws to lock both shafts firmly in place, reducing slip during motion. Its machined brass body provides long-term durability, making it ideal for robotics, RC propulsion stages, and small mechanical assemblies. Overall, the \u003cstrong\u003estepper shaft coupler\u003c\/strong\u003e maintains consistent torque where a compact \u003cstrong\u003emotor coupling\u003c\/strong\u003e setup is needed.\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eTechnical Details \u003c\/h3\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eMaterial: Brass\u003c\/li\u003e\n\u003cli\u003eBore Sizes: 3mm and 4mm\u003c\/li\u003e\n\u003cli\u003eOverall Length: 20 mm\u003c\/li\u003e\n\u003cli\u003eOuter Diameter: 9 mm\u003c\/li\u003e\n\u003cli\u003eLocking Hardware: M3 securing screws (4 pcs)\u003c\/li\u003e\n\u003cli\u003eCoupler Category: Rigid sleeve adapter\u003c\/li\u003e\n\u003cli\u003eWeight: 8 g\u003c\/li\u003e\n\u003cli\u003eColor: Brass gold tone\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eFeatures\u003c\/h3\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eTransitions 3mm shafts to 4mm components with a stable \u003cstrong\u003estepper shaft coupler\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eFirm torsional connection for smooth rotation in \u003cstrong\u003emotor coupling\u003c\/strong\u003e systems\u003c\/li\u003e\n\u003cli\u003eMachined brass resists oxidation for dependable \u003cstrong\u003eelectric motor shaft coupling\u003c\/strong\u003e tasks\u003c\/li\u003e\n\u003cli\u003eFour-point clamp system enhances grip and accuracy\u003c\/li\u003e\n\u003cli\u003eCompact structure fits tight mechanical layouts\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003eApplications\u003c\/h3\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eMicro robotic drivetrain upgrades using a \u003cstrong\u003estepper shaft coupler\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRC shaft diameter transitions requiring stable \u003cstrong\u003emotor coupling\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003ePrototype alignment systems needing secure \u003cstrong\u003eelectric motor shaft coupling\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eMiniature gear and pulley conversions\u003c\/li\u003e\n\u003cli\u003eLight torque equipment and instrumentation\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePhysical Attributes\u003c\/h3\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003eComponent Length: 20 mm\u003c\/li\u003e\n\u003cli\u003eSleeve Diameter: 9 mm\u003c\/li\u003e\n\u003cli\u003eBore Interfaces: 3 mm and 4 mm\u003c\/li\u003e\n\u003cli\u003eScrew Thread Standard: M3\u003c\/li\u003e\n\u003cli\u003eIncluded Screws: 4 pcs\u003c\/li\u003e\n\u003cli\u003eTotal Mass: 8 g\u003c\/li\u003e\n\u003cli\u003eBody Form: Solid rigid cylinder\u003c\/li\u003e\n\u003cli\u003eSurface Finish: Precision-machined brass\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product_info\"\u003e\n\u003ch3 class=\"sing--sub-heading\"\u003ePackage Includes\u003c\/h3\u003e\n\u003cul class=\"pro-ds\"\u003e\n\u003cli\u003e1 × Double Pass Brass Coupling (3mm × 4mm)\u003c\/li\u003e\n\u003cli\u003e4 × M3 Securing Screws\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"KitsGuru","offers":[{"title":"Default Title","offer_id":48430311047420,"sku":"LGRO076","price":59.0,"currency_code":"INR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0587\/2130\/4757\/files\/stepper-shaft-coupler-3mm-to-4mm-brass-1.jpg?v=1764743268","url":"https:\/\/kitsguru.com\/fr\/products\/stepper-shaft-coupler-3mm-4mm-brass","provider":"KitsGuru","version":"1.0","type":"link"}