Finding a reliable table saw arbor nut is essential for safe and accurate cuts. The items below are among the most relevant replacements and upgrades for Delta Unisaw, SawStop, Ridgid, and related contractor saws. Each option offers sturdy construction, proper threading, and compatibility with common arbors. This guide highlights five strong choices, summarizes key features, and provides practical buying tips to help you select with confidence.
Summary of selected products:
| Product | Brand | Key Feature | Thread Type |
|---|---|---|---|
| Blade Arbor Nut for Delta Unisaw • Left Hand Thread | MONARCH INDUSTRIAL | Left-hand thread, precisely machined | Left |
| Woodpeckers Dado Nut (Full Thread Engagement) | Woodpeckers | One-piece, combines washer and nut for full engagement | Full thread |
| HOLEPU 902-01-201-2571 Blade Arbor Nut • Right Thread | HOLEPU | Right-hand thread, high hardness and wear resistance | Right |
| Blade Arbor Flange Collar • Delta Unisaw & Contractor Saws | MONARCH INDUSTRIAL | Flange collar, specific outside/inside diameters | Standard |
| HOLEPU 902-01-200-9848 Blade Arbor Nut • Left Hand Thread | HOLEPU | Left-hand thread, high quality and durability | Left |
Blade Arbor Nut for Delta Unisaw — Left Hand Thread

The Monarch Industrial blade arbor nut designed for Delta Unisaw with a left-hand thread offers counterclockwise tightening, ensuring blade security during heavy cuts. The part number 902-01-200-9848S indicates a precise match to existing arbor threads, reducing mismatch risks. Its construction emphasizes durability to withstand repeated changes and quick reassemblies. This nut is an ideal fit for right-tilt and left-tilt configurations that require a left-hand thread for proper operation.
Woodpeckers Dado Nut — Full Thread Engagement

The Woodpeckers dado nut combines the arbor washer and nut into a single unit, delivering full thread engagement for stability when using a dado stack. Its one-piece design minimizes slippage and provides consistent clamping force during heavy dado operations. The unit is designed to be compatible with standard arbor wrenches and can be installed in place of the stock washer and nut, offering a streamlined setup for table saws like SawStop. This option is especially useful for users who frequently switch between dado cuts and standard blades.
HOLEPU Blade Arbor Nut Right Thread for Delta Unisaw Left Tilt

HOLEPU’s 902-01-201-2571 is a right-thread arbor nut designed for Delta Unisaw left-tilt configurations. The nut’s high-hardness material delivers improved wear resistance under repeated stress, contributing to long service life. With compatibility claims for Delta and Rockwell right-tilt single saws, this nut can be a versatile replacement in mixed-shop environments. Proper tightening and thread engagement are essential to prevent blade wobble and ensure safe operation during cuts.
Blade Arbor Flange Collar for Delta Unisaw & Contractor Saws

The Monarch Industrial flange collar (422-04-103-5001) provides a precise outer diameter of 2-1/2 inches and an inner diameter of 5/8 inch. This collar helps position the blade and keep proper alignment during operation on Delta Unisaw and contractor saws. A reliable flange collar reduces blade drift and contributes to consistent cut quality, especially when upgrading or restoring an older arbor system. This part is suitable for users who want a straightforward upgrade without modifying existing hardware.
Blade Arbor Nut 089025005076 for Ridgid Models

The JSORM Ridgid 089025005076 nut is designed for Ridgid models R4513, offering compatibility with common Ridgid arbors. This arbor nut emphasizes secure clamping and straightforward installation, intended to replace worn or damaged hardware. While Ridgid-specific, it remains a viable option for shops using multiple brands that require consistent threading and reliable performance during routine blade changes and routine maintenance.
HOLEPU Blade Arbor Nut Left Hand Thread — Delta Unisaw

HOLEPU’s 902-01-200-9848 left-hand-thread arbor nut is designed for Delta Unisaw and right-tilt configurations. With high hardness and wear resistance, it aims to withstand sustained stress and impact during cutting. The combination of left-hand threading and robust construction makes this nut a suitable replacement for aging arbors that require a counterclockwise tightening rule for certain saw configurations.
VIPIH 2CPS Arbor Nut — Delta Unisaw Compatibility

The VIPIH 2CPS arbor nut for Delta Unisaw features a durable build with easy installation and removal. The product promises high-quality material, durability, and a long service life, which makes it a practical choice for shops seeking reliable performance when replacing worn-out nuts. Its straightforward design supports quick blade changes and consistent clamping pressure across repeated uses.
Blade Arbor Nut — Delta Unisaw Right Hand Thread

Monarch Industrial’s right-hand-thread arbor nut (902-01-201-2571) is designed to secure blades with clockwise tightening. It is precisely machined to match arbor threads, providing reliable performance for left-tilt and right-tilt saw configurations. This nut is a practical option for users needing a standard right-thread replacement that aligns with factory specifications and helps maintain consistent blade alignment during cuts.
Buying Guide
Key considerations when selecting a table saw arbor nut
- Thread direction and compatibility: Determine whether your saw uses left-hand or right-hand threads and ensure the nut matches your arbor.
- Material and durability: Look for hardened steel or high-strength alloys to resist wear, impact, and long-term use in demanding shop environments.
- One-piece vs. multi-piece designs: One-piece nuts or integrated washers simplify installation and reduce the risk of loosening during operation.
- Arbor diameter compatibility: Confirm inner and outer diameters of the nut and any flange collars to ensure proper seating and alignment with your blade and arbor.
- Ease of installation: Choose nuts and collars that work with standard wrenches and require minimal adjustment when swapping blades or stacks.
- Brand and model compatibility: Check the saw brand (Delta, SawStop, Ridgid, Rockwell, etc.) and whether the part explicitly lists compatibility to avoid fitment issues.
- Replacement availability: Consider availability of spare parts to minimize downtime when replacements are needed.
- Safety considerations: A properly tightened arbor nut reduces blade wobble and kickback risks, contributing to safer operation.
The selections above provide varied options for common arbors on Delta, SawStop, Ridgid, and contractor saws. When choosing, assess your saw’s tilt orientation, thread type, and whether you prefer a single-piece replacement or a combined nut-and-washer design for easier maintenance and blade stability. For shops mixing brands, consider items with broad compatibility while prioritizing durability and ease of installation.