Hinges/Bolts: Load Capacity ≥500 kg

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

Parameter	Typical range	Notes & selection driver
Load Capacity	≥500 kg
Torque Requirement	20-50 Nm
Corrosion Resistance	Salt spray test ≥500 hours
Operating Temperature	-40°C to 150°C

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Standards

ISO 898-1, DIN 933, ISO 2768

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

Typical Suppliers & Equivalents

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

A practical evidence checklist for RFQ preparation and supplier evaluation.

Technical documentation

Request current drawings, revision history, and a signed specification sheet.

Manufacturing capability

Verify equipment lists, process limits, capacity, and representative production evidence.

Inspection readiness

Confirm test methods, calibrated equipment, sampling plans, and traceable reports.

Supplier transparency

Check the legal entity, factory address, ownership, certifications, and direct contacts.

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Manufacturers of Hinges/Bolts

Manufacturer profiles associated with Hinges/Bolts.

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Compiled and source-reviewed by the CNFX editorial team. Each manufacturer above links to the page on that company's own website where the product is listed, with the date we checked it. How we source and review

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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.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records. See the editorial policy.

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