2025-26 Total Wheel Alignment Sourcebook

HeavyDuty Truck Axle Shims

Ordering one Part Number supplies SIX SHIMS in a box. When placing order spring pad length and width is needed. Choose from Aluminum, ZINC and Steel Alloy Shims

cost COMPRESSION STRENGTH

MATERIAL

HARDNESS

ALUMINUM ALLOY ZINC ALLOY

$$ $$$ $$$$$

STEEL ALLOY

Specialty Products carries Truck Axle Caster Shims in three different alloys, giving the technician the opportunity to match price point and mechanical requirements to meet their customer’s needs. Note: Shims should not be stacked.

ALUMINUM ZINC

STEEL ALLOY

SPRING

SPR. PAD QTY/

ALLOY

ALLOY

WIDTH DEGREE LENGTH BOX

10405 10403 10412 10413 10422 10423 10432 10433 10442 10443 10452 10453 10462 10463 10472 10473 10505 10503 10512 10513 10522 10523 10532 10533 10542 10543 10552 10553 10562 10563 10572 10573 10605 10603 10612 10613 10622 10623 10632 10633 10642 10643 10652 10653 10662 10663 10672 10673

-- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6 6

2-1/2” 1/2° 2-1/2” 1° 2-1/2” 1-1/2° 2-1/2” 2° 2-1/2” 2-1/2° 2-1/2” 3° 2-1/2” 3-1/2° 2-1/2” 4° 3” 1/2°

5” 5” 5” 5” 5” 5” 5” 5” 6” 6” 6” 6” 6” 6” 6” 6”

ALUMINUM ALLOY HD SHIMS These economical over-the-road heavy duty truck axle shims are our lowest cost option. With average compression strength an hardness these shims are availabl S

d le

3”

1°

in a large variety of sizes and offer the technician a cost effective means to correct caster on over-the road trucks and trailers.

3” 1-1/2°

3”

2°

3” 2-1/2°

3”

3°

ZINC ALLOY HD SHIMS For a small cost increase versus aluminum, Zinc Alloy shims have the hardn

3” 3-1/2°

3”

4°

similar to premium manganese bronze or steel shims and a much improved compression strength as compared to their aluminum counterparts. ness anese bronze or steel

3-1/2” 1/2° 6-1/4”

3-1/2” 1°

6-1/4”

3-1/2” 1-1/2° 6-1/4”

3-1/2” 2°

6-1/4”

3-1/2” 2-1/2° 6-1/4”

STEEL ALLOY HD SHI These shims are the sta Top of the line compres strength and hardness means that when you set your alignment - it doesn’t change.

IMS ndard. ssion

3-1/2” 3°

6-1/4”

3-1/2” 3-1/2° 6-1/4”

3-1/2” 4°

6-1/4”

10705 10703 10706 10712 10713 10716 10722 10723 10726 10732 10733 10736 10742 10743 10746 10752 10753 10756 10762 10763 10766 10772 10773 10776

4” 1/2° 6-1/2”

4”

1°

6-1/2”

4” 1-1/2° 6-1/2”

4”

2°

6-1/2”

4” 2-1/2° 6-1/2”

NOTE - if you are using “Z Blocks” or other axle spacers you need to spread the load to pre vent the shim from crushing. Check out SPC’s HD Axle Spacer Plate below to solve this common problem.

4”

3°

6-1/2”

4” 3-1/2° 6-1/2”

4” 4”

4° 5°

6-1/2” 6-1/2”

10782 10783

--

10598 10698 10798

HD AXLE SPACER PLATE (6)

Spread the byHendric Sterling, Fo crush or eve HDWedge S caster shim of pla wi us

e load! “Z” Blocks and other axle spacers used ckson, Freightliner, Kenworth, Mack, Hollis, ord, and others create pressure points that will en break the toughest of caster wedges. Use this pacer Plate to spread the load and then use the f your choice to modify alignment. The 1/8” thick ates come 6 to a pack and are available in three idths. The HD Wedge Spacer Plate can also be sed to dial in ride height from side to side. #10598 - 3”Wide • #10698 - 3.5”Wide #10798 - 4”Wide

Call for your nearest distributor, product info or www.specprod.com 1-800-525-6505 Technical Assistance • In the USA and Canada

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