--- title: "70358-06304-042 — Shaft Assembly | TEK Precision" description: "TEK Precision manufactures 70358-06304-042, Shaft Assembly, for rotorcraft and fixed-wing platforms. ITAR compliant, quality audited. Request a quote." lang: en json-ld: | [ { "@context": "https://schema.org", "@graph": [ { "@type": "Organization", "@id": "https://tekprecision.com/#organization", "name": "TEK Precision Co., Ltd.", "alternateName": "TEK Precision", "url": "https://tekprecision.com/", "logo": { "@type": "ImageObject", "url": "https://tekprecision.com/brand/tek-logo.webp" }, "foundingDate": "1968", "description": "Precision aerospace manufacturer of flight safety-critical components, hydraulic assemblies and mechanical assemblies for rotorcraft and fixed-wing platforms.", "email": "teksales@tekprecision.com", "telephone": "+1-631-242-0330", "address": { "@type": "PostalAddress", "streetAddress": "205 West Industry Court", "addressLocality": "Deer Park", "addressRegion": "NY", "postalCode": "11729", "addressCountry": "US" }, "sameAs": [ "https://www.linkedin.com/company/tek-precision/" ], "hasCredential": { "@type": "EducationalOccupationalCredential", "credentialCategory": "certification", "name": "AS9100D / ISO 9001:2015", "identifier": "275724", "description": "AS9100D / ISO 9001:2015 certified. 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": "70358-06304-042", "item": "https://tekprecision.com/parts/70358-06304-042" } ] }, { "@context": "https://schema.org", "@type": "Product", "@id": "https://tekprecision.com/parts/70358-06304-042#product", "name": "70358-06304-042", "description": "Shaft Assembly, manufactured by TEK Precision as a build-to-print aerospace component.", "sku": "70358-06304-042", "category": "Shafts & Spindles", "image": "https://tekprecision.com/__l5e/assets-v1/4e26b8ad-74b2-49aa-8eb1-de879d88d955/hydraulic-5.webp", "url": "https://tekprecision.com/parts/70358-06304-042", "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 # 70358-06304-042 Shaft Assembly TEK Precision manufactures part number 70358-06304-042, Shaft 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 70358-06304-042 Description Shaft Assembly Component Type Shafts & Spindles ## Manufacturing Shafts and Spindle Components Shafts and spindles are frequently classified as flight safety-critical, which places them under the strictest process controls TEK Precision operates. Machining combines CNC turning with cylindrical grinding on Tschudin equipment to 0.000002 inch resolution. Ground surfaces carry a specific risk: grinding can induce localised thermal damage invisible to the eye that compromises fatigue life. TEK addresses this in-house through the temper etch process for detecting grind burn damage per Sikorsky specification SS8705, performed by certified nital etch examiners. Hardness is verified on Wilson hardness testers with Superficial capability, inspected per ASTM E-10, E-18, E-92 and E-384. Thermal stress relief is available in-house per SS8407. Dimensional verification uses the Brown and Sharpe CMM alongside Mitutoyo 12-inch height masters accurate to 0.00002 inches, with all measuring and test equipment on a documented calibration schedule traceable to NIST. ![Representative photograph of a precision-ground hydraulic spool shaft with machined lands and grooves, produced by TEK Precision](/__l5e/assets-v1/4e26b8ad-74b2-49aa-8eb1-de879d88d955/hydraulic-5.webp) Representative shafts & spindles manufactured by TEK Precision. Not a photograph of part 70358-06304-042. [Request a Quote](/contact?part=70358-06304-042) [All Parts](/parts)[Flight Safety Components](/products#flight-safety-components) Credentials - ITAR Compliant - Independently Audited Quality Management System - Sikorsky SSQR / Procure 2-011 Certified - Northrop Grumman Preferred Source ## Related Shafts & Spindles - [61301-14010-101 Shaft Guide ](/parts/61301-14010-101) - [65125-11214-142 Shaft, Hinge ](/parts/65125-11214-142) - [65311-03015-101 Shaft Engine ](/parts/65311-03015-101) - [65396-00017-101 Shaft ](/parts/65396-00017-101) - [65651-06013-101 Shaft ](/parts/65651-06013-101) - [76358-05121A042 Pitch Shaft A ](/parts/76358-05121a042) [![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