Description
Overview
The Long Main Case Mounting Stud (Part Number AM1083) delivers a reliable fastening solution for marine gearboxes. Its extended body and strong build keep the gearbox main case aligned and stable during operation. As a result, it prevents loosening under vibration and ensures a consistent fit in demanding marine environments.
Features
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1/2″ diameter with a 5″ overall length.
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Built for marine gearbox main case mounting.
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Resists vibration and supports long-term durability.
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Provides consistent retention even under heavy load.
Specifications and Materials
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Part Number: AM1083
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Diameter: 1/2 inch
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Overall Length: 5 1/4 inches
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Extended body for thicker mounting plates
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Designed for cast gearbox housings
For example, technicians can confirm specifications in this reference: https://www.boatdesign.net/forums/attachments/gearbox-fasteners-specsheet-pdf
Compatibility and Fitment
This long main case stud fits cast gearboxes that use thicker mounting plates. Because of its extended length, the AM1083 works in applications where a standard stud falls short. In addition, its design helps ensure secure fitment across a wide range of inboard gearbox assemblies. Consequently, marine technicians can install it with confidence.
Compliance and Safety
The AM1083 stud meets marine-grade expectations for gearbox mounting hardware. However, owners must still check thread condition, apply correct torque, and schedule regular inspections. By following these steps, boat operators reduce the risk of alignment issues or premature wear.
Marine Applications
This stud plays a vital role in securing gearbox housings in inboard propulsion systems. For instance, it suits heavy-duty recreational boats and performance marine engines. Furthermore, it helps maintain gearbox integrity during demanding on-water conditions, which makes it a trusted choice for marine professionals.
Why Choose Argomarine
Argomarine supplies trusted marine hardware designed for strength and dependability. Therefore, the AM1083 stud gives owners peace of mind by ensuring a secure gearbox installation. In addition, Argomarine’s experience in gearbox components guarantees support backed by local expertise.



