INDUSTRY COMPONENT

Base Flange

Base flange for secure battery terminal post mounting and electrical connection in automotive applications.

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Component Specifications

Definition
A precision-machined metal component designed to provide a stable mounting platform and electrical interface for battery terminal posts in automotive electrical systems. It ensures proper alignment, mechanical stability, and reliable current transfer between the battery and vehicle wiring harness.
Working Principle
The base flange functions as both a mechanical anchor and electrical conductor. It distributes clamping force evenly across the battery terminal post, prevents rotation or displacement during vibration, and provides a low-resistance path for electrical current through direct metal-to-metal contact with the terminal post and connecting cables.
Materials
Lead-coated copper alloy (C11000 or equivalent), aluminum alloy 6061-T6, or brass C36000 for corrosion resistance and optimal conductivity. Surface finish: Electroplated tin or nickel coating (5-10μm thickness) for enhanced corrosion protection.
Technical Parameters
  • Weight Approximately 120g
  • Thickness 8mm ±0.2mm
  • Inner Diameter 12.7mm (0.5 inch)
  • Mounting Holes 4x M6 threaded
  • Outer Diameter 45mm ±0.5mm
  • Temperature Range -40°C to +125°C
  • Bolt Circle Diameter 35mm
  • Torque Specification 8-10 Nm for terminal post connection
  • Electrical Resistance <0.5mΩ
Standards
ISO 8820-8, DIN 72551, SAE J537

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Base Flange.

battery terminal flange automotive electrical component battery post mount electrical connection flange vehicle battery hardware Base Flange Base Flange in Motor Vehicle Manufacturing

Parent Products

This component is used in the following industrial products

Battery Terminal Post

Conductive metal post connecting battery cells to external circuits

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Engineering Analysis

Risks & Mitigation
  • Galvanic corrosion with dissimilar metals
  • Over-torquing causing thread damage
  • Insufficient contact pressure leading to high resistance
  • Vibration-induced loosening
  • Thermal expansion mismatch
FMEA Triads
Trigger: Incorrect torque application during installation
Failure: Loose connection leading to increased electrical resistance and overheating
Mitigation: Implement calibrated torque tools and operator training; use thread-locking compounds where specified
Trigger: Corrosion at metal interfaces
Failure: Degraded electrical conductivity and potential connection failure
Mitigation: Apply appropriate anti-corrosion compounds; specify compatible materials; implement protective coatings
Trigger: Material fatigue from vibration
Failure: Crack formation and eventual mechanical failure
Mitigation: Design with adequate safety factors; implement vibration-damping washers; conduct vibration testing

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
±0.1mm on critical dimensions, ±0.5mm on non-critical features
Test Method
Dimensional verification via CMM, electrical resistance testing per ISO 8820, vibration testing per SAE J2380, salt spray testing per ASTM B117

Procurement Evaluation Criteria

Not customer reviews or live demand data. These dimensions support RFQ preparation and supplier evaluation.

Technical documentation
4/5
Manufacturing capability
4/5
Inspection readiness
5/5
Supplier transparency
3/5

These scores are example evaluation dimensions, not real customer ratings, country-specific buyer feedback, or live inquiry activity.

Related Components

Isolation Monitor
An automotive BMS component that continuously monitors electrical isolation between high-voltage battery systems and vehicle chassis to prevent electric shock hazards.
Balancing Circuit
Electronic circuit in automotive BMS that equalizes voltage across battery cells to optimize performance and lifespan.
Communication Transceiver
A bidirectional communication transceiver for automotive BMS enabling data exchange between battery cells and control units.
Enclosure
Protective housing for automotive battery management systems ensuring safety, thermal management, and electromagnetic compatibility.

Frequently Asked Questions

What is the primary function of a base flange in battery terminal applications?

The base flange provides mechanical stability to prevent terminal post rotation or loosening due to vibration, while ensuring consistent electrical contact between the battery post and connecting cables.

Can base flanges be used with different battery terminal sizes?

Base flanges are typically designed for specific terminal post diameters (commonly 12.7mm/0.5" or 16mm/0.625"). Using incorrect sizes can compromise both mechanical security and electrical performance.

How does material selection affect base flange performance?

Copper alloys offer superior conductivity but require corrosion-resistant coatings. Aluminum provides good conductivity with lighter weight. Material choice balances conductivity, corrosion resistance, mechanical strength, and cost requirements.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

Data Basis

CNFX manufacturer profiles, technical classification, publicly available product information, and ongoing plausibility checks.

Preliminary Technical Classification
This page supports structured research, RFQ preparation, and supplier evaluation. It does not replace buyer-led supplier qualification, standards review, or technical approval.

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Bar Shaft Battery Enclosure