Galvanized Hollow Lead Screw High Strength Hollow Threaded Rod Grade 4.8

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Galvanized Hollow Lead Screw High Strength Hollow Threaded Rod Grade 4.8
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Features
Specifications
Type: Hollow Lead Screw
Material: Carbon Steel
Specification: 3/8" Thread, 15mm
Standard No: GB6178
Strength Class: 4.8 Grade
Surface Treatment: Galvanized
Highlight:

Galvanized Hollow Lead Screw

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High Strength Hollow Threaded Rod

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Hollow Threaded Rod Grade 4.8

Basic Infomation
Place of Origin: CHINA
Brand Name: Kesle
Payment & Shipping Terms
Delivery Time: 5-8 work days
Payment Terms: T/T,Western Union,MoneyGram,PayPal
Product Description
Galvanized Hollow Lead Screw High Strength Hollow Threaded Rod Grade 4.8
Product Overview

Chamfered Threaded Tube High Strength Easy-Install Industrial Pipeline Connector designed for reliable performance in demanding industrial applications.

Basic Parameters and Structural Design

Dimensional Specifications:

  • Thread Type: Commonly adopts NPT (60° tapered thread) or BSPT (55° sealed tapered thread), with nominal diameters ranging from 1/8" to 2"
  • Chamfer Design: The tube end features a 45° chamfer (edge-cut) with a width of 1-3mm, facilitating alignment during installation and reducing burrs
  • Material: High-strength carbon steel (e.g., Q235) or stainless steel (304/316), surface-treated with galvanization or nickel plating for corrosion resistance

Structural Features:

  • Threaded Connection: Integral external threads, precision-machined to ensure tight fit with mating components (e.g., couplings, flanges)
  • Separable Design: Some models allow disassembling the tube body and threaded sleeve for flexible installation in confined spaces
Technical Performance

Load Capacity:

  • Working Pressure: Up to 1.6-2.5MPa (NPT threads) or 2.0-4.0MPa (BSPT threads), depending on material thickness
  • Temperature Range: -20°C to +120°C (standard), with high-temperature variants available for up to +200°C

Surface Treatment:

  • Zinc Plating: Thickness ≥5μm, salt spray resistance ≥24 hours
  • Anodizing (aluminum alloy): Hardness ≥12HV, suitable for outdoor or corrosive environments
Application Fields
  • Industrial Machinery: Pipe connections in hydraulic systems, pneumatic equipment, and mechanical transmission devices
  • Lighting Fixtures: Structural connectors in LED track lights and ceiling lamps, combining heat dissipation with mechanical fixation
  • Automotive & HVAC: Engine oil pipelines, refrigerant lines, requiring vibration resistance and leak-proof performance
Design Advantages

Installation Efficiency:

  • The chamfered edge simplifies insertion into fittings, reducing alignment time by 30% compared to non-chamfered tubes
  • Compatible with standard wrenches or automated assembly tools for quick installation

Reliability:

  • Precision threading ensures minimal leakage (<0.01MPa pressure drop) when paired with sealing tapes or gaskets
  • Heat-treated materials enhance fatigue resistance, extending service life by 20% under cyclic loading
Maintenance & Installation Guidelines

Inspection:

  • Regularly check thread integrity for corrosion or deformation, especially in high-moisture environments
  • Measure chamfer wear with a caliper; replace if deviation exceeds ±0.5mm

Assembly:

  • Apply PTFE tape or thread sealant to tapered threads for leak-proof connections
  • Use torque wrenches to avoid over-tightening (recommended torque: 8-15N*m for 1/2" threads)

Storage:

  • Store in dry conditions, sealed with anti-rust paper or plastic caps to prevent oxidation
Typical Application Cases
  • LED Track Lighting: The edge-cut tooth tube (M10x1 thread) securely connects lamp heads to tracks while dissipating heat, supporting load-bearing up to 5kg
  • Hydraulic Systems: A 3/4" NPT tooth tube withstands 1.8MPa pressure in excavator boom joints, ensuring stable operation under impact load
Technical Parameters
Item Typical Value
Thread Accuracy ISO 7-1 Class B (tapered)
Chamfer Angle 45°±2°
Burst Pressure 3× working pressure
Surface Roughness (Ra) ≤3.2μm
Weight (per 100mm) 0.3-1.2kg (varies by diameter)
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Contact Person : orlenda li
Tel : +8613713334285
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