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UHMW is a common plastic known for extreme durability, versatility, and cost-effectiveness. You can also count on UHMW parts to be reliably abrasion, impact, and chemical resistant.
Our Ultra High Molecular Weight Polyethylene, or UHMW for short, was crafted as a unique solution for projects that needed durability, low friction, and chemical resistance. That means it’s used most often in wear applications that need a longer lifespan.
UHMW is self-lubricating, which ensures smooth and noiseless operations. Known for its extremely high molecular weight, it features an unsurpassed combination of slickness, toughness, and impact resistance.
UHMW is also easy to machine with common woodworking tools, one of the contributing factors to its cost-effectiveness. The truly surprising thing about parts made from UHMW is that they often outperform metal parts in specific applications.
As with other plastics like HDPE, UHMW is an excellent fit for marine construction applications for things like dock fender pads, pile guards, and anti-skid walkways. Similarly, these two materials tend to replace wood in these scenarios and they do not rot, splinter, or corrode like wood.
| Details | |
|---|---|
| Advertised Thickness | .375″ | 9.53mm |
| Gauge | N/A |
| Thickness Tolerance Positive | .038″ |
| Thickness Tolerance Negative | .037″ |
| Cutting Process | CNC Router |
| Cut Tolerance | .005″ |
| Available Operations | |
| Deburring | No |
| Bending | No |
| Countersinking | Yes |
| Tapping | No |
| Anodizing | No |
| Plating | No |
| Powder Coating | No |
| Hardware | No |
| Design Considerations | |
| Min Part Size | 1″ x 2″ |
| Max Part Size | 44″ x 30″ |
| Min Hole Size (CNC Bit Size) | .125″ |
| Min Bridge Size | .375″ |
| Min Hole to Edge Size | .113″ |
 |
|
| Tab and Slot Tolerance | .045″ |
| Min Part Size Countersink | 1″ x 4″ |
| Max Part Size Countersink | 14″ x 46″ |
| Countersink Min Minor | .130″ |
| Countersink Max Major | .656″ |
| Countersink Min Hole Center to Material Edge | .453″ |
| Properties | |
| Density | 59 lb/ft^3 |
| Tensile Strength (Ultimate) | 7.1 ksi |
| Impact Strength (Notched Izod) | |
| Fatigue Strength | |
| Flexural Modulus | |
| Flexural Strength | |
| Rockwell Hardness | |
| Elongation at Break | 400% |
| Elastic Modulus | 120 ksi |
| Poisson’s Ratio | |
| Thermal Conductivity | 0.24 BTU/h-ft-°F |
| Melting Point | 270°F |
| Magnetic | No |
We guarantee awesome quality parts. If you’re not 100% happy, we’ll give you a refund or remake on the spot – no questions, no hassle.
These tabs hold your parts in place while being cut to ensure the best accuracy possible. Click below to learn what to expect and how to best design with these tabs in mind.
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We proudly use hardware by PEM
| SKU | SO-440-8 |
| Thread Size | 4-40 x .250″ |
| Hole size in sheet (+0.003/-.0.000) | .168″ |
| Minimum sheet thickness | 0.040″ |
| Maximum sheet thickness | .125″ |
| Fastener material | Steel |
| Minimum distance hole C/L to edge | 0.230″ |
| When determining the distance between two or more fasteners, you can calculate the distance by the formula, C/L to edge + 1/2 the diameter of the second mounting hole. | .314″ |
| Recommended panel material | Steel/Aluminum |
| Coating type | Zinc |
| Length | .250″ |
| Aluminum material ranges (5052, 6061, 7075) | 0.040″-0.125″ |
| Steel material ranges (CRS, HRPO, HR) | 0.048″-0.119″ |
