Heat Sink Mounting Hardware That Holds Thermal Contact

Engineered spring clips, spring-loaded screws and brackets help maintain the contact your heat sink needs—from the first prototype to repeat production.

Controlled preload

Match the mounting force to your device and thermal interface.

M2–M8 interfaces

Specify the thread and mounting envelope your assembly needs.

BOM-ready supply

Receive matched hardware, drawings and batch identification.

Bring your mounting stack to an engineering review.

Discuss Your Mounting Requirements

A Mounting System Built Around Your Thermal Stack

morton supplies mounting hardware as a coordinated part of your heat sink assembly, matching the fastener, spring and support features to the device, TIM and mounting structure.

304 stainless steel clips | Formed contact features apply load at the specified device location.

Spring-loaded screws | Working spring travel accommodates the approved stack tolerance.

Aluminum brackets | Defined datums and fixing points locate the heat sink within your enclosure.

Matched assembly kits | Hardware and specified insulating parts arrive against one controlled BOM.

Define the complete mounting stack before selecting individual parts.

Review a Matched Hardware Kit

Address the Assembly Risks That Affect Thermal Contact

The right mount controls how load enters the assembly, so fit, contact and repeatability are considered together.

Uneven contact|Balanced fixing points and a defined tightening sequence help reduce tilted seating and local gaps.

Excessive device stress|Load limits and support positions keep clamping forces within the package and PCB design envelope.

Tolerance variation|Spring travel and mechanical stops manage the approved range of stack heights.

Assembly inconsistency|Captive parts, clear orientation and controlled instructions reduce missing components and rework.

Resolve the mounting risk before it becomes a production issue.

Review Your Assembly Risks

Choose the Mounting Approach for Your Assembly

Compare attachment principles against access, load control and service requirements, then develop one configuration for your product.

Mounting approach	Best suited to	Design focus
Spring clips	Compact packages and accessible clip features	Contact location, clip deflection and insertion force
Spring-loaded screws	Serviceable heat sinks with a controlled mounting stack	Working travel, shoulder or stop height and supported load path
Bracket mounting	Enclosure-supported or heavier assemblies	Datum scheme, stiffness and access for tools
Through-bolt support	Assemblies with underside access and a backplate	Electrical clearance, bearing area and PCB support

Match the attachment principle to the structure you already have.

Select a Mounting Approach

Control Preload Across the Working Tolerance

Specify the force at the installed height, then check the complete tolerance range so the mount maintains contact without exceeding device load limits.

Installed height

Define the compressed stack, spring seat and mechanical stop together.

Working force

Use the selected spring's load–deflection data at the minimum and maximum stack heights.

Load distribution

Review support locations, contact area and device-specific force limits.

Force

Specify at installed height

Travel

Check the full tolerance stack

Torque

Define for the approved joint

Turn your stack dimensions into a defined mounting force window.

Discuss Preload and Tolerance

Match the Mount to the Thermal Interface

The fastener and TIM operate as one stack. Select the interface thickness and compression behavior before freezing the mounting height.

Soft thermal pads

Set the working gap from the specific pad's compression-stress curve. Mechanical stops help keep compression and device loading within the agreed range.

Grease and phase-change interfaces

Control flatness, seating and bond-line conditions. A repeatable assembly sequence supports consistent contact with the selected material.

Insulating interface sheets

Coordinate the sheet with sleeves and washers. Check edge coverage and local loading so electrical separation is preserved during assembly.

Coordinate the interface and hardware in the same engineering review.

Review TIM and Mount Compatibility

Keep Electrical Isolation in the Mounting Design

A thermal mount must also respect live parts, grounding paths and the electrical boundaries of the finished equipment.

Insulating sleeves and washers

Separate the fastener from live tabs where the approved stack requires isolation.

Creepage and clearance

Evaluate the nearest screw head, washer and bracket against the equipment's electrical design.

Defined grounding surfaces

Specify conductive contact zones and coating masks wherever a grounding path is required.

Protected interface edges

Control burrs, sharp corners and pad coverage to reduce the risk of insulation damage.

Share your isolation and grounding requirements with the mounting drawing.

Review Electrical Interfaces

Design Mounting Features That Fit the Heat Sink

Hole positions, tool access and support geometry are reviewed together to make your mount practical to machine and assemble.

Interface	Engineering review
Threads	M2–M8 common sizes; engagement and inserts to the approved design
Mounting datums	Hole position, bearing surfaces and tolerance references
Tool access	Driver envelope, assembly direction and surrounding component clearance
Heat sink structure	Base thickness, fin clearance and support without obstructing the thermal path

Spring-loaded shoulder screw seated on a solid heat sink mounting ear

Check your interfaces before releasing the mounting drawing.

Request a Mounting DFM Review

Plan Retention for the Operating Environment

Review the joint under the temperature, vibration and handling conditions your equipment will encounter.

Thermal cycling|Evaluate changes in preload and seating as the approved materials expand, contract and settle.

Vibration and shock|Define the retention method and test profile around assembly mass, orientation and support points.

Surface compatibility|Select finishes with the mating metals, moisture exposure and contamination requirements in view.

Service cycles|Check access, part retention and reassembly instructions where equipment needs maintenance.

Build the verification plan around your equipment's actual duty.

Define Mounting Validation

Compression spring measured between parallel platens on a force test stand

Inspect the Features That Make Assemblies Repeatable

Material, spring behavior and critical interfaces are linked to the approved drawing and inspection plan.

Material and finish | Check material identification and the specified surface condition against the order requirements.

Dimensions and threads | Inspect critical fixing positions, stop heights and thread fit with calibrated measuring tools.

Spring characteristics | Record the required free height and force at the specified test deflection.

Traceable release | Provide agreed FAI, dimensional records and batch identification with the approved revision.

Specify the checks that matter to your receiving and assembly teams.

Discuss Your Inspection Plan

Mounting Hardware for Industrial Thermal Assemblies

Apply the same discipline to the mounting interface while adapting the support structure to the equipment.

Power semiconductor module mounted to a finned heat sink with spring-loaded screws

Power Electronics

Spring-loaded fixing points seat power devices against finned heat sinks while maintaining specified package loads.

Industrial computer heat sink retained by spring screws with supported PCB mounting points

Industrial Computing

Low-profile mounts coordinate with PCB support, connector clearances and service access.

Power module mounted to a closed aluminum liquid cold plate with side coolant fittings

Energy Storage and PCS

Bracket and fastener interfaces secure power modules to liquid cold plates with defined load paths.

Industrial COB LED retained by stainless brackets on a radial aluminum heat sink

Industrial Lighting

Compact clamps and brackets retain thermal contact around LED modules within the available enclosure.

Develop the mounting interface for your equipment platform.

Discuss Your Application

Move from Drawing Review to Controlled Supply

One project team coordinates the mounting definition, samples and approved production configuration.

Step 01

Review the stack

Provide device details, heat sink geometry, TIM and mounting limits for DFM.

Step 02

Build and verify

Check sample fit, installed force and assembly sequence against the agreed requirements.

Step 03

Approve the configuration

Freeze drawings, BOM, inspection points and packaging after validation.

Step 04

Repeat with control

Supply identified batches and manage material or process changes through approval.

Start with a clear engineering definition and a practical sample plan.

Plan Your Sample Build

Give Your RFQ the Inputs Engineering Needs

A complete mounting brief helps us assess fit, load control and the supplied hardware boundary before quotation.

Device and load limits | Package drawing, mounting instructions and allowable clamping force.

Heat sink interfaces | 2D/3D files, mounting datums, threads and usable base thickness.

TIM and installed gap | Material reference, thickness, compression data and tolerance stack.

Electrical boundaries | Isolation parts, live-part clearances and grounding requirements.

Operating conditions | Temperature range, vibration profile, orientation and service access.

Supply requirements | Prototype quantity, annual volume, inspection documents and packaging.

Send the information you have; we will identify the remaining inputs.

Prepare Your Mounting RFQ

Heat Sink Mounting Hardware Questions

Practical answers to the decisions that affect hardware selection, validation and supply.

Can you select a universal tightening torque?

Torque is defined for the approved joint, fastener, surface condition and device limits. We review these inputs with the installed spring height and support structure.

Can the hardware be supplied with the heat sink?

Yes. Heat sinks, specified TIM and mounting hardware can be coordinated against one BOM, with the packing and assembly boundary agreed for your line.

Can you work from our drawings?

Yes. We support drawing-based manufacture and joint development, including DFM for mounting holes, brackets, spring travel and assembly access.

How do you control spring force?

The drawing defines the required load at a stated deflection or installed height. The agreed inspection plan sets the test method and acceptance criteria.

What samples and documents can you provide?

Project samples support fit and assembly validation. Available documents include controlled drawings, BOM, FAI, dimensional results and agreed material records.

Can the same parts be reused after service?

Reusability is assessed for the selected retention method, insulation components and service cycle. The approved assembly instructions identify any parts requiring replacement.

Get an answer based on your mounting stack and operating conditions.

Ask a Mounting Engineer

Build a More Repeatable Thermal Assembly

Tell us about the device, heat sink and mounting boundary. Our team will help define a coordinated hardware solution for your project.

Mounting DFM|Review fixing points, access and load paths.
Force and tolerance review|Coordinate installed height with device limits.
Matched BOM|Align the heat sink, TIM and specified hardware.
Sample support|Verify fit and assembly before production.
Controlled delivery|Receive agreed inspection records and batch identification.

Discuss Your Mounting Project

Share your application and the mounting details you already have.