INDUSTRY COMPONENT

Latch Pivot Pin

A precision-engineered pivot pin used in safety hook latch mechanisms to enable controlled rotational movement and secure locking.

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Component Specifications

Definition
The Latch Pivot Pin is a critical cylindrical component within safety hook assemblies that serves as the rotational axis for the latch mechanism. It allows the latch to swing open and closed while maintaining precise alignment and load-bearing capacity. This pin is subjected to shear forces during operation and must maintain dimensional stability under varying loads and environmental conditions to ensure reliable safety hook functionality.
Working Principle
The pin functions as a fixed rotational axis, allowing the latch to pivot around it. When the safety hook engages, the latch rotates around this pin to lock onto the load point. The pin's precise diameter and surface finish minimize friction while maintaining structural integrity, ensuring smooth operation and preventing unintended disengagement.
Materials
Typically manufactured from alloy steel (such as 4140 or 4340) or stainless steel (such as 316 or 17-4 PH) with heat treatment (quenching and tempering) to achieve Rockwell hardness of 40-50 HRC. Corrosion-resistant coatings like zinc plating or black oxide may be applied for environmental protection.
Technical Parameters
  • Length 25-80 mm
  • Diameter 8-20 mm (standard range)
  • Tolerance h7/g6 fit
  • Load Capacity 2-10 kN (depending on size)
  • Shear Strength ≥400 MPa
  • Surface Finish Ra 0.8-1.6 μm
Standards
ISO 2768-m, DIN 6325, ISO 898-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Latch Pivot Pin.

latch pivot pin safety hook component industrial pivot pin mechanical locking pin safety equipment parts DIN 6325 pin load-bearing pivot Latch Pivot Pin in Machinery and Equipment Manufacturing

Parent Products

This component is used in the following industrial products

Safety Hook

A safety-critical attachment device for securing loads on jib cranes.

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Engineering Analysis

Risks & Mitigation
  • Shear failure under overload
  • Corrosion leading to seizure
  • Wear causing increased play and misalignment
  • Improper installation causing binding
FMEA Triads
Trigger: Material fatigue from cyclic loading
Failure: Fracture or permanent deformation
Mitigation: Regular inspection schedules, proper material selection with adequate fatigue strength, and load monitoring
Trigger: Corrosion in humid or chemical environments
Failure: Increased friction, seizure, or reduced cross-sectional strength
Mitigation: Use corrosion-resistant materials/coatings, environmental controls, and protective maintenance
Trigger: Improper installation or misalignment
Failure: Binding, uneven wear, or premature failure
Mitigation: Precision machining of mating parts, proper installation procedures, and alignment verification

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Diameter tolerance typically h7 (ISO 286), straightness within 0.1 mm per 100 mm length
Test Method
Dimensional verification with micrometers, hardness testing (Rockwell), shear load testing per ISO 14556, corrosion resistance per salt spray testing 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.

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Frequently Asked Questions

What is the primary function of a latch pivot pin in safety hooks?

It serves as the rotational axis that allows the latch to open and close smoothly while maintaining precise alignment and bearing shear loads during operation.

How do I select the right material for a latch pivot pin?

Consider the operating environment (corrosion potential), load requirements, and frequency of use. Alloy steel offers high strength for heavy loads, while stainless steel provides better corrosion resistance for harsh environments.

What maintenance does a latch pivot pin require?

Regular inspection for wear, corrosion, or deformation; lubrication with appropriate grease (if specified); and replacement if tolerances exceed manufacturer specifications or visible damage occurs.

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.

Request Manufacturing Insight for Latch Pivot Pin

Latch or Hook Latch Spring