Marsh Brothers Aviation M1027 - Spinner Washers (Clear), 25pk
MBA spinner washers are CNC machined from a flexible polymer, not stamped from a sheet of Nylon. The screw hole is sized, so they need to be twisted onto the 10/32 screw. You’ll find they’ll outlast the screw and your mechanics won’t lose them when they remove the screws during your annual inspection. These washers are designed to assume the flat shape of the screw head on the outer surface and match the curvature of the spinner on the inside. They won’t put any stress on the aluminum spinner trying to flatten it where it’s supposed to be round.
| General Information | |
|---|---|
| Part # | M1027 |
| Manufacturer | Marsh Brothers Aviation |
| Shipping Information | |
|---|---|
| Schedule B | 8807300010 |
| ECCN | 9A991.d |
Customers also viewed
AIRCRAFT COMPATIBILITY
PRODUCT REVIEWS
This item does not have any reviews yet.
QUESTIONS & ANSWERS
Unlike traditional nylon washers, Marsh Brothers Aviation spinner washers are CNC-machined from a durable polymer billet instead of being stamped from sheet material. This machining process allows for tighter tolerances, better screw fit, and improved long-term durability under pressure. The material resists cracking and extrusion, ensuring a longer service life even after multiple maintenance cycles.
These washers are engineered to conform to the curved inner surface of the spinner and the flat shape of the screw head, distributing stress more evenly. This design prevents localized stress that could distort or crack the spinner over time – a common issue with stiffer or improperly fitted nylon washers.
Marsh Brothers spinner washers are specifically designed to fit #10-32 screws, the size commonly used for aircraft spinner applications. The hole is slightly undersized by design, allowing the washer to twist onto the screw securely, preventing loss during maintenance or inspection.
Not at all. Although the screw hole is slightly tight by design, the washer can be easily twisted onto the screw threads by hand, ensuring a snug fit. This simple yet effective feature helps prevent washers from falling off or getting lost during annual inspections.
The washers are machined from Thordon polymer, one of Marsh Brothers’ toughest proprietary materials. This self-lubricating, wear-resistant polymer is specifically chosen for its ability to maintain flexibility and strength under stress without cracking or deforming.
Yes. Because they’re made from a resilient, non-extruding polymer, Marsh Brothers spinner washers can be reused multiple times without performance degradation. They’re built to outlast even the stainless steel screws they’re paired with.
By resisting cracking and staying securely on the screws, these washers eliminate the need for frequent replacements, saving time during inspections and reassembly. Mechanics also appreciate not having to chase lost washers during maintenance.
Yes! These spinner washers are suitable for use with both composite and aluminum spinners, as they conform naturally to the inner curvature without stressing or distorting the spinner surface.
Absolutely! Marsh Brothers spinner washers are dimensioned for the round-head stainless steel screws typically found in standard spinner kits, making them a direct replacement for stock nylon washers in most general aviation aircraft.
Their resistance to wear, cracking, and extrusion makes them a cost-effective upgrade over nylon washers. By extending the lifespan of both the washer and the spinner assembly, they reduce long-term maintenance costs and the risk of structural damage.
