The Kreg ACS4590 90 Degree and 45 Degree Track Saw Square delivers precise, repeatable square and miter alignment for track saw guide rails. Built for woodworkers and trade professionals breaking down sheet goods, trimming wide panels, or squaring material, this all-metal accessory locks directly onto guide tracks to establish accurate 90-degree crosscuts and 45-degree miter cuts without requiring manual layout lines or continuous measuring.

Constructed with an all-metal body and precision-machined surfaces, the square maintains long-term alignment accuracy across demanding shop and jobsite applications. Its innovative wedge-mount design enables fast, secure attachment to the guide rail, while an oversized thumb screw allows easy hand-tightening without additional tools. An integrated leveling tab stabilizes the track on the workpiece surface to prevent tipping or shifting during the cut.

Designed for maximum flexibility across cutting setups, the ACS4590 accommodates both left-bladed and right-bladed circular saws. It offers universal compatibility with most major track saw guide rail systems, while integrating seamlessly with Kreg Accu-Cut tracks, Adaptive Cutting System Universal Tracks, and Kreg Track Clamps.

Features & Benefits

• Dual Cutting Angles: Provides built-in 90-degree and 45-degree alignment for fast, repeatable crosscuts and miter cuts.
• All-Metal Construction: Features a precision-machined metal body built for long-lasting durability and tight tolerances.
• Wedge-Mount System: Secures quickly and tightly to guide rails for a stable, accurate setup.
• Universal Track Compatibility: Fits most major track saw guide rail systems, including Kreg Accu-Cut and Adaptive Cutting System Universal Tracks.
• Blade Orientation Support: Works with both left-bladed and right-bladed track saws and circular saws.
• Integrated Leveling Tab: Keeps the guide track flat and stable on the workpiece surface during cutting operations.
• Oversized Thumb Screw: Enables quick, secure hand-tightening for easy adjustments.
• Clamp Compatibility: Works seamlessly with Kreg Track Clamps for added hold on slick or non-uniform materials.

What's Included

• (1) Kreg 90 Degree & 45 Degree Track Saw Square (ACS4590)
• (1) Leveling Tab and Hardware
• (1) Wedge Lock and Hardware
• (1) Owner's Manual

Shipping: Beaver Industrial Supply offers free shipping on orders over $199, with the exception of Sawstop and Laguna, which require additional fees to be collected. Other exceptions apply as noted on product pages.

We reserve the right to determine the fastest and most cost-effective manner of transportation for all orders that qualify for free shipping. Our shipping carriers cannot deliver to PO box or U.S. military post office box addresses, such as APO and FPO, so we require a physical street address for delivery. We use USPS, which typically takes 2-8 days for delivery, depending on your location, for smaller items and UPS Ground for all other ground shipments under 150 pounds.

• Returns: We accept returns and exchanges for a fee up to 30 days in unopened, new, and unused condition in the original packaging. Exceptions apply.

Please note, NO REFUNDS will be given on any new, used, or damaged item if it is not returned in the original packaging, no matter what condition the packaging is in. If the item qualifies for free shipping, you will be charged the original shipping cost and are responsible for shipping the product back with the shipping carrier of your choice.

We must receive the item undamaged. We recommend you package it accordingly and purchase insurance for higher-priced items to ensure you receive the full refund minus any incurred fees as applicable. We reserve the right to refuse the return of accessories.

Because items are your responsibility until they reach us, we recommend that you send the parcel using a delivery service that insures you of the value of the goods. Return shipping is at the customer's cost. At Beaver Industrial Supply’s discretion, delivery charges can be refunded if the goods are defective.

Returns require a return authorization number. Please call customer service at 314-773-5999 or submit a customer service inquiry to start the exchange or return process and receive an authorization number.

Machinery too large for parcel shipment (palletized or crated) is only returnable if there is a material defect that cannot be resolved by replacing components.