Agilent Thumb Screw 10-32 WS2 Coated Total of 2 Screws

Agilent Technologies LTM System Transline Module Thumb Screw – 10-32 Thread, Long Profile, WS2 Solid Lubricant Anti-Galling Coating (MPN: G6578-20027)

The Agilent Technologies G6578-20027 is an instrument-grade, high-precision specialty thumb screw engineered for the installation and structural securement of Low Thermal Mass (LTM) chromatography systems. Specifically configured with a standard 10-32 thread pattern and an extended long-shank spindle geometry, this specialized fastener is the factory hardware standard required to align, ground, and clamp LTM II Transline Modules securely onto Gas Chromatography (GC) heated zones and oven interfaces. To withstand the rigorous, repetitive high-velocity temperature programming shifts typical of analytical laboratories, the entire steel screw body undergoes an advanced engineering surface treatment with a Tungsten Disulfide (WS2) solid-film lubricant layer. This dry-film matrix provides outstanding anti-galling protection and an ultra-low coefficient of friction, preventing mechanical binding and thread seizing in high-temperature environments without requiring dirty grease or oils that can contaminate sensitive chemical baselines.

Technical Performance and Design

• Tungsten Disulfide (WS2) Dry Film Shield: Coated with a space-grade WS2 molecular layer. This solid-film lubricant acts as a molecular barrier that eliminates metal-on-metal friction, preventing extreme structural galling, cold welding, and thread stripping across continuous heating cycles.

• Anti-Contamination Vacuum Profile: Unlike traditional wet mechanical lubricants or graphite pastes that outgas volatile organics and bleed trace impurities into gas chromatography ovens, the WS2 dry shield remains entirely stable, keeping system backgrounds clear of ghost peaks.

• Extended LTM II Spindle Alignment: Engineered with a customized elongated shank profile that allows the fine 10-32 thread core to bridge structural insulation gaps, guaranteeing precise, bottomed-out alignment of LTM II Transline Modules onto automated door frames.

• Knurled Manual Ergonomic Cap: Features a precision-cut knurled crown top that provides excellent fingertip grip leverage under laboratory gloves, allowing field technicians to easily execute wrench-free, uniform torque adjustments during module swaps.

Product Specifications

• Catalog Number / MPN: G6578-20027 (Also cataloged as G657820027)

• Manufacturer / Brand: Agilent Technologies

• System Line Compatibility: Agilent LTM (Low Thermal Mass) II Systems, 6890 and 7890 Gas Chromatograph (GC) Oven Modules

• Hardware Thread Dimension: Standard 10-32 UNF Thread Profile

• Physical Format Architecture: Extended Long Profile Thumbscrew

• Surface Treatment Technology: Tungsten Disulfide (WS2) Molecular Coated

• Functional Assignment: Mounting and fastening of LTM II Transline Module hardware assemblies

• Standard Packaging Array: Frequently distributed by Agilent as a matched pair kit (Total of 2 screws per retail package)

Key Benefits and Applications

• LTM Transline Module Maintenance: The exact replacement fastener needed to correctly mount high-speed analytical separation components to the oven bulkhead without triggering mechanical play or structural thermal isolation leaks.

• High-Temperature Cycle Endurance: Built to maintain unyielding clamping force throughout extreme, rapid temperature ramps from ambient room baselines up to intense analytical oven operating limits.

• Simplified Tool-Free Servicing: The manual thumb wheel structure allows laboratory chemists to safely detach and exchange capillary columns or inlet lines without fetching hand wrenches or damaging surrounding insulation shields.

• Preserved Equipment Lifespan: The wear-resistant coating ensures that the mating internal threads on expensive, hard-to-replace GC manifold interfaces stay crisp, clean, and unmarred over thousands of operational cycles.

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