Which specific tang sights is the Lyman LY-3990785 mounting screw compatible with?

The Lyman 66la Tang Sight Mounting Screw (LY-3990785) is specifically engineered for use with the Lyman 66la tang sight. Its precise design ensures a secure and proper fit for this particular sight model. This screw serves as an ideal replacement or spare part for your existing Lyman 66la tang sight.

What is the primary function of the Lyman 66la Tang Sight Mounting Screw?

This screw's primary function is to securely attach a tang sight to the tang of a rifle. Tang sights are traditional rear sights often found on older or replica firearms. It provides a robust and reliable mechanical fastener, ensuring the sight remains firmly in place during firearm operation.

Can you provide the exact dimensions or material specifications for the LY-3990785 mounting screw?

While Lyman is a reputable manufacturer known for quality firearm components, specific technical details such as the exact dimensions, thread pitch, or material composition for the LY-3990785 mounting screw are not explicitly provided. It is designed to precisely fit the Lyman 66la tang sight, ensuring optimal performance.

Are there any specific Australian compliance requirements for the Lyman 66la Tang Sight Mounting Screw?

As a passive mechanical fastener, this mounting screw does not require electrical certifications such as 240V compatibility, SAA/RCM certification, or an AU plug. For specific Australian import regulations concerning firearm accessory components, it is recommended that customers consult their local authorities.

Tang Sight Mounting Screw - Lyman LY-3990785

The Lyman 66la Tang Sight Mounting Screw (Model: LY-3990785) is a precision-engineered replacement fastener designed to secure Lyman 66LA series receiver sights to compatible firearms. Manufactured by Lyman, a brand with a long-standing reputation in precision shooting and reloading equipment, this mounting screw ensures a rigid, stable connection between your aperture sight and the rifle receiver. For Australian shooters maintaining classic lever-action rifles, having correct, high-quality mounting hardware is essential to preserve sight alignment and accuracy during repeated firing cycles.

Key Features:

Direct Compatibility: Engineered specifically for the Lyman 66LA receiver peep sight system to ensure a perfect mechanical fit.
Recoil Resistant: Designed to withstand the sharp recoil impulses of traditional lever-action rifle calibers without backing out or loosening.
Precision Threading: Features clean, precise thread engagement to prevent cross-threading and damage to the rifle receiver.
Durable Construction: Manufactured from high-tensile steel with a classic blued finish to resist corrosion and match the aesthetic of traditional firearms.
Easy Installation: Standard slotted head design allows for straightforward installation and removal using standard gunsmithing screwdrivers.

Product Specifications:

Brand: Lyman
Model Number: LY-3990785
Thread Size: Industry-standard 6-48 thread pitch for firearm receivers
Material: High-carbon steel
Finish: Blued black oxide
Weight: Approximately 5 grams
Compatibility: Lyman 66LA receiver sights and compatible lever-action rifle receivers

Who It Is For:

The Lyman 66la Tang Sight Mounting Screw is an essential component for Australian target shooters, hunters, and vintage firearm restorers who rely on Lyman aperture sights for precision aiming. Whether you are building up a classic lever-action rifle, replacing a worn or lost receiver screw, or performing routine maintenance on your sporting firearm, this genuine Lyman part ensures your sighting system remains securely anchored. It is ideal for gunsmiths and DIY firearm enthusiasts across Australia who require reliable, factory-spec hardware to maintain the structural integrity and accuracy of their shooting setups.

SKU	LY38101LP
Model #	LY-3990785
Brand	Lyman
Shipping Weight	1.0000kg

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Lyman Ly-3990785 Tang Sight Mounting Screw Secure Firearm Accessory Reliable Fastener

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