Locking Pin/Catch: Load Capacity 50N to 5000N

Component Specifications

Definition

A mechanical component used in locking/retention mechanisms to securely hold moving parts in position, prevent unintended movement, and allow controlled release through manual or automated actuation. It typically consists of a pin, plunger, or latch that engages with a corresponding receptacle or notch, providing positive locking with audible or tactile feedback.

Working Principle

Operates through mechanical interference or spring-loaded engagement. When engaged, the pin/catch physically blocks movement by interfacing with a mating surface. Disengagement is achieved through axial force (pull/push), rotational action, or electromagnetic release, overcoming spring resistance or friction. Common designs include ball plungers, detent pins, and rotary latches.

Materials

High-strength alloy steel (e.g., AISI 4140, 4340), stainless steel (304/316), or hardened tool steel; corrosion-resistant coatings (zinc plating, black oxide, nickel); optional polymer tips for noise reduction.

Technical Parameters

Parameter	Typical range	Notes & selection driver
Length	10mm to 150mm
Diameter	3mm to 25mm
Cycle Life	>100,000 cycles
Spring Force	5N to 200N
Load Capacity	50N to 5000N
Operating Temperature	-40°C to 120°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 8734, DIN 1481, ISO 2768-m

Parent Products

This component is used in the following industrial products

Locking/Retention Mechanism

A mechanical or electromechanical component within signal connectors that secures mating connectors together and prevents accidental disconnection.

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Engineering Analysis

Risks & Mitigation

Shear failure under overload
Corrosion in humid environments
Fatigue from cyclic loading
Inadvertent disengagement due to vibration

FMEA Triads

Trigger: Material fatigue from repeated cycling
Failure: Pin fracture or permanent deformation
Mitigation: Use fatigue-resistant alloys, implement regular inspection schedules, and design with safety factors >2

Trigger: Contamination (dirt, debris) in mechanism
Failure: Incomplete engagement or jamming
Mitigation: Add protective covers, specify IP-rated enclosures, and implement preventive maintenance cleaning

Industrial Ecosystem

Compatible With

Typical Suppliers & Equivalents

Compliance & Inspection

Tolerance

±0.01mm on critical diameters, H7/g6 fit for precision applications

Test Method

Cyclic endurance testing per ISO 898-1, salt spray testing per ASTM B117, load testing with calibrated force gauges

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 Locking Pin/Catch

Manufacturer profiles associated with Locking Pin/Catch.

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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 is the difference between a locking pin and a catch?

A locking pin typically refers to a cylindrical component that inserts into a hole, while a catch often involves a hook or latch mechanism. Both serve retention purposes but differ in engagement geometry.

How do I select the right spring force for a locking pin?

Consider the vibration environment, required retention force, and operator ergonomics. Higher spring forces improve security but increase actuation effort.

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.

Locking Pin/Catch