--- title: "S6140-20006-004 — Bellcrank Assembly | TEK Precision" description: "TEK Precision manufactures S6140-20006-004, Bellcrank Assembly, for rotorcraft and fixed-wing platforms. ITAR compliant, quality audited. 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Certified scope: Machining and Assembly of Rotary Head and Fixed Wing Components for the Aerospace Industry.", "recognizedBy": { "@type": "Organization", "name": "Amtivo (USA) Inc." }, "validFrom": "2026-09-11", "expires": "2029-09-10" } }, { "@type": "WebSite", "@id": "https://tekprecision.com/#website", "url": "https://tekprecision.com/", "name": "TEK Precision", "publisher": { "@id": "https://tekprecision.com/#organization" }, "inLanguage": "en-US" } ] }, { "@context": "https://schema.org", "@type": "BreadcrumbList", "itemListElement": [ { "@type": "ListItem", "position": 1, "name": "Home", "item": "https://tekprecision.com/" }, { "@type": "ListItem", "position": 2, "name": "Parts", "item": "https://tekprecision.com/parts" }, { "@type": "ListItem", "position": 3, "name": "S6140-20006-004", "item": "https://tekprecision.com/parts/s6140-20006-004" } ] }, { "@context": "https://schema.org", "@type": "Product", "@id": "https://tekprecision.com/parts/s6140-20006-004#product", "name": "S6140-20006-004", "description": "Bellcrank Assembly, manufactured by TEK Precision as a build-to-print aerospace component.", "sku": "S6140-20006-004", "category": "Cams, Arms & Levers", "image": "https://tekprecision.com/__l5e/assets-v1/760f45f4-e321-4063-a5f0-ba31b4045e09/mechanical-7.webp", "url": "https://tekprecision.com/parts/s6140-20006-004", "manufacturer": { "@id": "https://tekprecision.com/#organization" } } ] --- [AS9100D / ISO 9001:2015 Certification](/__l5e/assets-v1/895c892f-6772-4012-88b5-1125b6569f1d/tek-as9100-certificate.pdf) [![TEK Precision](/assets/tek-logo-BRnrme0g.webp)](/) [Home](/)[Products](/products)[Parts](/parts)[Quality](/quality)[Facilities](/facilities)[Awards](/awards)[Customers](/customers)[Blog](/blog)[Contact](/contact)[Request a Quote](/contact) Parts Catalog # S6140-20006-004 Bellcrank Assembly TEK Precision manufactures part number S6140-20006-004, Bellcrank Assembly, as a build-to-print component for rotorcraft and fixed-wing platforms. Every part is produced to OEM specification with full traceability and first-article inspection. ## Specifications Part Number S6140-20006-004 Description Bellcrank Assembly Component Type Cams, Arms & Levers ## Manufacturing Cams, Arms and Control Levers Cams, arms, levers and horns convert and redirect motion within flight control systems, and their profile geometry directly determines control response. TEK Precision machines profile features on multi-axis milling centres, with profile verification performed on a Brown and Sharpe CMM Model 7.6.3 Excel and on a J&L optical comparator with 16-inch screen at 0 to 50 power. Bearing and bushing bores are honed to size and verified with Sunnen dial bore gauges, with press operations performed on Sunnen hydraulic presses rated to 10,000 pounds. Where the component carries a threaded interface, inspection is performed under the Johnson thread gaging system with safety-critical capability. Components in this family are frequently classified as flight safety-critical, and are manufactured under full traceability with 100% first-article inspection and independent inspection authority reporting directly to the Director of Quality. ![Representative photograph of a yellow mechanical lever assembly with a bearing, produced by TEK Precision](/__l5e/assets-v1/760f45f4-e321-4063-a5f0-ba31b4045e09/mechanical-7.webp) Representative cams, arms & levers manufactured by TEK Precision. Not a photograph of part S6140-20006-004. [Request a Quote](/contact?part=S6140-20006-004) [All Parts](/parts)[Mechanical Assemblies](/products#mechanical-assemblies) Credentials - ITAR Compliant - Independently Audited Quality Management System - Sikorsky SSQR / Procure 2-011 Certified - Northrop Grumman Preferred Source ## Related Cams, Arms & Levers - [65102-11541-102 Horn ](/parts/65102-11541-102) - [65105-11002-103 Arm, Cam, Droop ](/parts/65105-11002-103) - [65105-11502-102 Cam ](/parts/65105-11502-102) - [65414-03105-049 Bellcrank ](/parts/65414-03105-049) - [65662-11229-101 Arm, Servo Cyl ](/parts/65662-11229-101) - [70102-28012-103 Horn ](/parts/70102-28012-103) [![TEK Precision](/assets/tek-logo-BRnrme0g.webp)](/) World Class Aerospace Manufacturing — Build to Design TEK Precision Co., Ltd. is a world-class aerospace manufacturer producing mission-critical components for defense, commercial aviation, and space programs. AS9100D / ISO 9001:2015 Certified FAR-21 ITAR [](https://www.linkedin.com/company/tek-precision/) #### Navigate - [About](/about) - [Media](/media) - [Products](/products) - [Quality](/quality) - [Facilities](/facilities) - [The TEK Team](/team) - [Awards](/awards) - [Customers](/customers) - [Contact](/contact) - [Privacy Policy](/privacy-policy) - [Terms & Conditions](/terms-and-conditions) - [Cookie Policy](/cookie-policy) #### Headquarters - 205 West Industry Court Deer Park, NY 11729 - [(631) 242-0330](tel:+16312420330) - [teksales@tekprecision.com](mailto:teksales@tekprecision.com) © 2026 TEK Precision Co., Ltd. All Rights Reserved. Custom Website Design by [WebConsultants](https://webconsultants.co.za/) Engineered in the United States of America We use cookies to improve your experience on our site. See our [Cookie Policy](/cookie-policy) for details. DeclineAccept