Full-Hard Steel for Precision Alignment & Custom Shimming

A machine sitting only a few thousandths out can still need a measured correction. Shop Aid Steel Shim Stock provides 1008/1010 full-hard steel material for machinery alignment, precision spacing, clearance adjustment, tooling setup & custom mechanical shims.

The collection gives workshops more than one stock format to work with. Choose from 6″ × 25″ flat packs, 6″ × 100″ rolls & 12″ × 120″ rolls, with gauges spanning .001″ through to .031″ across the available range.

Shop Aid specifies its steel shim material as 1008/1010 full-hard steel. That gives fitters, machinists, maintenance technicians & toolrooms a defined material for measured mechanical adjustment rather than relying on unidentified sheet offcuts. Feeler Gauges & Alignment Tools are useful companions when establishing gaps, soft foot or rotating-equipment alignment.

What Is Steel Shim Stock?

Steel shim stock is thin, controlled-thickness steel used to create small dimensional corrections between mechanical components.

Material can be cut or shaped to suit machine feet, housings, fixtures, tooling, mounting faces & other assemblies where a known spacing adjustment is required.

The Shop Aid collection includes three practical stock formats:

Gauge selection varies by format, with products across the collection spanning .001″ to .031″.

Australian workshops commonly describe these imperial thicknesses in thou:

► .001″ = 1 thou
► .002″ = 2 thou
► .003″ = 3 thou
► .005″ = 5 thou
► .010″ = 10 thou
► .020″ = 20 thou
► .025″ = 25 thou
► .031″ = 31 thou

One thou equals one thousandth of an inch or 0.0254mm. This terminology is particularly useful when working from imperial equipment drawings, existing shim packs or alignment measurements.

For another steel-based material option, compare Shop Aid Blue Tempered Shim Sheets. Where corrosion resistance is an important material requirement, explore Shop Aid Stainless Steel Shim Sheets.

Why Choose Shop Aid Steel Shim Stock?

Steel shim stock is a practical workshop material where the application calls for full-hard carbon steel plus controlled dimensional adjustment.

1008/1010 Full-Hard Steel

Material identity matters more than simply knowing the stock is steel.

Shop Aid specifies this range as 1008/1010 full-hard steel with published hardness of approximately Rockwell B90–100.

That makes it materially different from blue tempered 1095 spring steel, stainless steel, nickel & aluminium shim stock.

Broad Gauge Coverage

Fine alignment corrections & larger spacing adjustments don't require the same stock thickness.

The collection spans gauges from 1 thou through to 31 thou across its different formats, allowing buyers to select around the measured requirement rather than improvising with unidentified material.

Multiple Stock Formats

The required profile plus how frequently shims are prepared should influence which stock format you buy.

A compact flat pack may suit occasional custom work, while longer rolls provide more material for repeated workshop use, strips or larger profiles.

Material for Custom Shapes

Not every machine foot, housing or fixture matches a standard pre-cut shim.

Steel stock can be prepared around non-standard bolt positions, mounting geometry, housings, fixtures & other mechanical shapes where the procedure allows a custom shim.

For wider machinery maintenance around the same assemblies, browse Power Transmission.

Steel Shim Stock vs Blue Tempered Steel

Both products are steel shim materials, but they aren't interchangeable simply because the required gauge is the same.

Shop Aid Steel Shim Stock is identified as 1008/1010 full-hard steel.

Shop Aid Blue Tempered Shim Stock uses 1095 spring steel in a hardened & tempered condition.

The correct material should follow the machinery specification, operating requirements & intended mechanical behaviour rather than assuming the harder material is automatically the better option.

When Should You Choose Roll Stock or Flat Packs?

Choose the format around the work you're actually doing.

6″ × 25″ Flat Packs

These can suit:

► Smaller custom profiles
► Occasional repairs
► Convenient workshop storage
► Jobs where only limited stock is required

6″ × 100″ Rolls

These provide useful flexibility for:

► Frequent workshop shimming
► Long narrow strips
► Custom machine-foot shapes
► Multiple pieces cut from one stock size
► General machinery repair

12″ × 120″ Rolls

The wider format becomes useful where:

► The required profile exceeds 6″ in width
► Larger mounting faces need custom material
► Multiple pieces can be planned across the width
► Workshop consumption justifies the larger format

More material isn't automatically the better purchase. Select a format that accommodates the required profile without creating unnecessary stock or handling.

Common Applications for Steel Shim Stock

Motor & Pump Alignment

A vertical correction beneath a motor foot can change the shaft relationship at the coupling.

Where the alignment procedure calls for steel shim material, the required correction should come from measured alignment data rather than an estimated visible gap.

For components joining rotating shafts, browse Couplings & Clutches.

Soft-Foot Correction

A machine foot that doesn't sit correctly against its base can distort the equipment as the mounting fasteners are tightened.

Shimming may form part of the correction, but dirt, burrs, distorted feet, damaged bases or unsuitable mounting surfaces should also be investigated.

The objective is to correct a measured condition rather than simply fill whatever gap can be seen.

Gearboxes, Compressors & Rotating Machinery

A mounting-height change can affect components further along the drive train.

Motors, pumps, gearboxes, compressors, couplings & bearings should be considered as connected equipment when alignment is involved.

Bearing Housings & Mechanical Adjustment

Some bearing arrangements rely on controlled spacing, clearance or preload.

Where the equipment procedure specifies shimming, steel stock can provide known-thickness material for preparing the required adjustment.

For replacement components around the same job, explore Ball Bearings & Accessories.

Tooling, Fixtures & Die Setup

Fine positioning isn't limited to large rotating machinery.

Machinists & toolrooms can use known-thickness steel shim material for suitable fixture positioning, tooling adjustments, die setup & prototype mechanical work.

Fabrication & Machine Assembly

Fabricated equipment can require a controlled dimensional correction rather than another alteration to the mating components.

Where the design permits shimming, custom-cut steel material can establish specified spacing between suitable mechanical surfaces.

For practical maintenance insight from demanding machinery environments, read Quarry Crews Crusher Maintenance.

How Do You Choose the Right Steel Shim Stock?

Make the buying decision in four areas: material, gauge, format & profile.

Confirm Steel Is the Required Material

Check machinery drawings, service instructions, existing material specifications or engineering requirements where available.

Don't automatically substitute ordinary steel for stainless, nickel, aluminium, brass or blue tempered material simply because the gauge matches.

Measure the Required Correction

Thickness selection starts with the condition you're trying to change.

Suitable measurement methods may include:

► Feeler gauges
► Dial indicators
► Laser alignment equipment
► Micrometers
► Straight edges or other equipment specified by the procedure

For broader dimensional checks around workshop components, Calipers provide another measuring option.

Choose the Gauge

An existing shim is useful evidence, but it isn't automatically the current specification.

Previous repairs, resurfacing, component replacement, foundation movement or wear may have changed the correction now required.

Select the new gauge from the current measurement.

Choose the Stock Format

Consider:

► Required outside dimensions
► Frequency of shim preparation
► Whether long strips are needed
► Width of the mounting area
► Number of pieces expected from the stock
► Storage & handling requirements

Prepare the Required Profile

The correct gauge still needs to sit properly against the mating surface.

Account for bolt holes, edges, mounting faces, shaft clearances or housing geometry before cutting.

For secure workholding during suitable preparation tasks, browse Shop Presses & Vices.

Steel vs Other Shim Materials

Thickness determines the dimensional correction. Material determines whether the shim itself is appropriate for the assembly.

For applications where lightweight aluminium is required, compare Shop Aid Aluminium Shim Sheets.

Expert Tips for Working With Steel Shim Stock

Keep Gauge Information With Every Offcut

Once thin pieces have been separated from the labelled pack, visual identification becomes unreliable.

Mark or segregate useful offcuts by thickness before returning them to storage.

Clean Before Taking the Measurement That Matters

Swarf, rust scale, paint edges or burrs can exceed the thickness of a fine shim.

Clean & inspect mating surfaces before calculating the final correction.

Treat Repeated Shimming as Diagnostic Information

A machine requiring increasingly different shim packs may have another mechanical issue developing.

Check foundations, machine feet, fasteners, bearings, housings & supporting surfaces where alignment or spacing repeatedly changes.

Keep Shim Stacks Straightforward

Stacking known gauges may be necessary, but more layers aren't automatically better.

Where the procedure permits several combinations, use a practical arrangement that reaches the required total thickness without unnecessary pieces.

Record Recurring Machinery Adjustments

A documented shim pack gives the next maintenance technician a useful reference point.

Record shim position, material, total thickness & final measurement where machinery is periodically dismantled, serviced or realigned.

Don't Confuse Precision Shims With Structural Packers

Steel shim stock is intended for fine dimensional adjustment.

Where an assembly requires engineered structural packers, foundation plates or load-rated supports, use products specified for that purpose rather than treating thin shim stock as a substitute.

For another perspective on day-to-day mechanical workshop work, read A Day With An Automotive Mechanic Peninsula.

What Should You Avoid?

► Don't describe this range as structural packing material
► Don't assume thin steel shim stock carries an unlimited load
► Don't claim it maintains alignment regardless of operating conditions
► Don't substitute ordinary steel where corrosion-resistant stainless or another material is specified
► Don't copy an old shim pack without remeasuring the assembly
► Don't measure across rust, paint, swarf or raised burrs
► Don't add layers simply to conceal an unresolved soft-foot condition
► Don't leave thin steel offcuts unidentified
► Don't confuse 1008/1010 full-hard stock with 1095 blue tempered spring steel