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M640801001PT

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M640801001PT
June 08, 2026

M640801001PT

The M640801001PT is a metric hydraulic hex head plug with PT (BSPT) thread, manufactured by Air‑Way Global Manufacturing (Hydra‑Flex division), designed for sealing and closing ports in hydraulic and pneumatic systems. It is a solid, one‑piece steel plug with a 55° tapered pipe thread for reliable metal‑to‑metal sealing under pressure.

Description

M640801001PT

The M640801001PT is a metric hydraulic hex head plug with PT (BSPT) thread, manufactured by Air‑Way Global Manufacturing (Hydra‑Flex division), designed for sealing and closing ports in hydraulic and pneumatic systems. It is a solid, one‑piece steel plug with a 55° tapered pipe thread for reliable metal‑to‑metal sealing under pressure.

General Description

The M640801001PT belongs to the M6408 series of metric hydraulic plugs, which are widely used in industrial fluid power systems to block unused ports, end lines, or cap fittings. The part number decodes as: “M6408” = series code for metric hex head plugs; “01001” = thread size and configuration; “PT” = 55° BSPT (British Standard Pipe Taper) thread, also known as JIS PT thread. This plug features a robust hex body for wrench installation, a solid shank, and a precision‑machined PT taper thread for leak‑tight sealing without O‑rings in most applications.

Key Specifications

  • Thread Type: PT (BSPT) 55° tapered pipe thread, 1:16 taper

  • Thread Size: M14 × 1.5 (metric base with PT taper)

  • Material: High‑strength carbon steel (C45/C67 equivalent)

  • Finish: Zinc‑plated (chromate passivated) for corrosion resistance

  • Pressure Rating: Up to 350 bar (5075 psi) static, 250 bar (3625 psi) dynamic

  • Temperature Range: −20 °C to +120 °C (hydraulic oil compatible)

  • Hex Size: 17 mm (across flats)

  • Overall Length: 22 mm (approx.)

  • Sealing Method: Metal‑to‑metal taper seal (supplemented with thread sealant for low‑pressure applications)

  • Certifications: RoHS compliant; meets ISO 7306‑2000 (BSPT) standards

Mechanical Features

  • Solid Construction: One‑piece forged steel design eliminates internal leakage paths and ensures structural integrity under high pressure.

  • Hex Drive: Precision‑formed hex body allows easy installation and removal with standard wrenches, preventing rounding under torque.

  • Tapered PT Thread: 55° BSPT thread with 1:16 taper provides progressive interference fit, creating a permanent seal as the plug is tightened.

  • Corrosion Protection: Zinc plating with chromate passivation resists rust and oxidation in industrial, outdoor, and humid environments.

  • Compact Profile: Low‑profile hex head minimizes protrusion, ideal for tight spaces and manifold installations.

Performance and Reliability

The M640801001PT is engineered for consistent performance in high‑pressure hydraulic systems. Its solid steel construction resists deformation under extreme pressure, while the PT taper thread ensures reliable sealing even after multiple installation cycles. The zinc‑plated finish provides excellent corrosion resistance, extending service life in harsh conditions. With no moving parts or seals to wear, the plug offers maintenance‑free operation and long‑term reliability in critical fluid power applications.

Typical Applications

  • Hydraulic Systems: Blocking unused ports on manifolds, valves, cylinders, and pumps in industrial machinery, construction equipment, and agricultural vehicles.

  • Pneumatic Systems: Sealing low‑to‑medium pressure air lines, compressors, and pneumatic tools.

  • Fluid Power Maintenance: Capping open lines during system repair, preventing contamination and fluid leakage.

  • Industrial Manifolds: Closing auxiliary ports on hydraulic power units (HPUs) and distribution blocks.

  • Retrofit and Replacement: Direct replacement for standard M14 × 1.5 PT plugs in existing systems.

Ordering and Compatibility Information

  • Part Number: M640801001PT (also referenced as M6408‑M14‑O‑PT)

  • Manufacturer: Air‑Way Global Manufacturing (Hydra‑Flex)

  • Thread Compatibility: Interchangeable with BSPT (R/Rc) and JIS PT threads; compatible with M14 × 1.5 metric ports.

  • Status: Active production; available from stock or custom order.

  • Warranty: Standard 1‑year manufacturer’s warranty against defects in materials and workmanship.


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