Murray Mower Blade Cross Reference by Number
2026-11-02 · 8 min read
Murray mower blades are matched by the part number stamped near the centre hole, then confirmed with deck width and centre-hole type. The number opens the search; measuring the old blade closes the fit. A replacement made to match the original specifications cuts cleanly without buzzing or scalping.
What part numbers do Murray mower blades use?
Murray blades carry a part number stamped near the centre hole, and that number points to a deck width and blade profile rather than a single machine. Many Murray walk-behind and rider decks share spindle and hole patterns with the wider MTD family, so the same digits can describe more than one length. Treat the number as the start of a lookup, then confirm the physical dimensions before ordering from any supplier.
| Catalogue number | Deck width | Length | Centre hole | Lift type |
|---|---|---|---|---|
| MNA152505 | 20"–36" | 21" | Round | Walk-behind |
| 422719 | 42" | 21" | Round | Mulching |
| 942-0610a | 38" | 20.5" | Round | Mulching |
These three catalogue blades list Murray among their fitment brands, so they are the reference points for the deck widths Murray machines most often run. We are an independent manufacturer and not an authorised Murray dealer, so none of them are our own house numbers.
How do I cross-reference a Murray blade number?
Cross-reference a Murray blade by pairing the stamped number with four measured facts — overall length, centre-hole type, thickness and lift — because the deck width alone does not fix the geometry. The number opens the search; the measurements close the fit.
Measure the old blade tip to tip, note whether the centre hole is round, star or a multi-point pattern, caliper the thickness, and say which way the blade turns. With those four facts plus the deck width, a supplier can name the right profile even when the stamping is illegible. Our blade measuring guide shows exactly what to record before you write to a supplier.
Which blade type suits a Murray deck?
A mulching or high-lift blade suits most Murray decks, because the lighter spindle loads and slower ground speeds of a big-box rider favour a profile that lifts clippings into the chute rather than letting them pack. Mulching blades trade some lift for fine recutting, so pick by what you do with the clippings.
| Blade type | Suited to | Trade-off on a Murray deck |
|---|---|---|
| High lift | Bagging, tall or wet grass | Can throw clippings harder than needed |
| Mulching | Recycling leaves and fine clippings | Needs slower ground speed |
| Notched high lift | Bagging plus durability on grit | Heavier; slightly more draw |
The MNA152505 (20–36-inch walk-behind) and 422719 (42-inch mulching) above are the two Murray-fit profiles we stock for common widths. A 38-inch mulching blade such as 942-0610a covers the smaller Murray rider widths when your deck is under 42 inches.
Are Murray blades interchangeable with MTD-family blades?
Murray blades interchange with MTD-family blades only when length, centre hole, thickness and lift also match, which they frequently do for shared deck sizes but not always across widths. Murray used common spindle and hole patterns across many walk-behind and rider decks, so several cross-brand numbers fit both.
For example, 422719 covers the 42-inch mulching range and is listed for Murray as well as several MTD-family brands, while MNA152505 is the dedicated Murray walk-behind profile. Both are round-hole blades, yet they are not the same part because the length and lift geometry differ. Check the four dimensions before assuming a swap, and use the OEM matching guide to turn a worn stamping into a confirmed fit.
What steel and hardness should a Murray-fit blade use?
A Murray-fit replacement should be cut from 40Mn manganese steel and hardened to a 45–50 HRC band, which holds the edge through grit yet resists cracking on hidden stone. That balance, not a single high number, is what keeps a deck blade working through a long season.
We run production in Guangde, Anhui, where the plant has made blades since 2008 and now employs more than 800 people with a daily capacity of 50,000 pieces. The same heat-treat control that decides working life is detailed on our quality page, which is the part of production that most affects how a blade performs under real mowing load. For the steel science behind the hardness band, see our blade steel and hardness article.
Can I order custom Murray-fit blades made to a sample?
You can order custom Murray-fit blades made to a supplied sample or drawing, and the minimum run is normally 300 pieces per profile. Share the old blade or its part number and we will confirm fitment, profile and run size before any cutting begins.
Blades we supply are made to match the original specifications of the part number you send, cut from 40Mn steel and held in the 45–50 HRC band we run across the catalogue. The 300-piece minimum covers the setup and heat-treat run for a made-to-sample blade. Send your part number or a photo of the old blade to start, or browse the model index for stock shapes.
Frequently Asked Questions
Are your Murray-fit blades original Murray parts?
We are an independent manufacturer and not an authorised Murray dealer, so our blades are not original factory parts. They are made to match the original specifications of the part number you send, cut from 40Mn steel and held in the 45–50 HRC band we run across the catalogue.
How do I find the part number on a Murray blade?
Look for a stamped number near the centre hole on the top face of the old blade, because that is where Murray and its contract manufacturers usually place the identifier. If the stamping is worn, measure length, centre hole, thickness and lift, then match those four facts to a Murray-fit profile instead of relying on the digits alone.
Can I use a universal blade on a Murray deck?
A true universal blade rarely fits a Murray spindle correctly, because the centre hole, length and lift must match the deck geometry exactly. Always match the four measured dimensions to a Murray-fit profile instead of assuming a generic blade will seat and balance safely.
What is the minimum order for custom Murray-fit blades?
The minimum order is 300 pieces per blade profile, which covers the setup and heat-treat run for a made-to-sample blade. Custom steel such as SK5 can be quoted, and mixed profiles can be combined across a single production window to reach the minimum.
How often should I replace Murray mower blades?
Replace Murray blades when the cutting edge shows nicks deeper than a coin, when the ends are worn past the original width, or when you see cracks near the centre hole. Walk-behind and light rider decks typically need a fresh blade each season, with mid-season sharpening in between rather than waiting for failure.
More on this: Gravely Mower Blades: Deck Size & Fitment Guide · Ferris Mower Blades: Deck Size & Fitment Guide
Blade part numbers linked to this article
The model pages below carry the deck size, centre hole, thickness and replacement numbers for the blades discussed above.