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Hinges/Bolts Component – Machinery and Equipment Manufacturing

Component Specifications

Definition

Hinges and bolts are critical components in manhole or access hatch systems, designed to provide reliable, repeatable opening and closing while maintaining structural integrity under operational stresses. Hinges enable rotational movement, while bolts secure the hatch in a closed position, ensuring safety and preventing unintended access.

Working Principle

Hinges operate on a pivot mechanism, allowing the hatch to rotate open or closed. Bolts function through threaded engagement, applying clamping force to secure the hatch against its frame, often assisted by locking mechanisms for safety.

Materials

Typically carbon steel (e.g., ASTM A307), stainless steel (e.g., AISI 304/316), or alloy steel, with optional coatings like zinc plating or hot-dip galvanizing for corrosion resistance.

Technical Parameters

Load Capacity ≥500 kg
Torque Requirement 20-50 Nm
Corrosion Resistance Salt spray test ≥500 hours
Operating Temperature -40°C to 150°C

Standards

ISO 898-1, DIN 933, ISO 2768

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Hinges/Bolts.

Parent Products

This component is used in the following industrial products

Manhole/Access Hatch

A removable cover or door that provides access to the interior of a recovery tank for inspection, maintenance, and cleaning purposes.

View Product Details

Engineering Analysis

Risks & Mitigation

Over-tightening causing thread damage
Corrosion leading to seizure
Hinge misalignment causing wear

FMEA Triads

Trigger: Incorrect torque application
Failure: Bolt loosening or breakage
Mitigation: Implement torque control procedures and regular inspections

Trigger: Lack of lubrication
Failure: Hinge binding or excessive wear
Mitigation: Apply appropriate lubricants and schedule maintenance

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance

±0.1 mm for hinge pin alignment, bolt threads per ISO 965

Test Method

Torque testing, salt spray corrosion test, cyclic load testing

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.

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Frequently Asked Questions

What materials are best for hinges and bolts in corrosive environments?

Stainless steel (AISI 316) or coated carbon steel with hot-dip galvanizing provides optimal corrosion resistance.

How do I ensure proper torque for bolts?

Use a calibrated torque wrench and follow manufacturer specs, typically 20-50 Nm, to avoid under/over-tightening.

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.

Hinges/Bolts