Description
Reviews
| Brand | - |
| Category | Electronic Components Market / Other Components |
| Origin | - |
| Compatibility | Agilent Power Supply Series |
| Material | High-Grade ABS Plastic |
| Color | Black with White Indicator Line |
| Shaft Diameter | 6.35mm (1/4 inch) |
| Outer Diameter | 28mm |
| Height | 18mm |
| Mounting Type | Push-On Fit |
| Package Quantity | 2 Pieces per Pack |
| Weight | 15 grams |
| Condition | New Replacement Part |
Anonymous
Mar 28, 2026
Rating: 5/5
Perfect fit for old Agilent units
These knobs fit my older Agilent power supply perfectly. The friction is just right, not too loose or too tight. Great replacement for the worn-out originals.
Anonymous
Mar 26, 2026
Rating: 4/5
Decent alternative
Works well for the price. It doesn't feel quite as premium as the OEM part, but for a fraction of the cost, it gets the job done effectively.
Anonymous
Mar 22, 2026
Rating: 5/5
Saved my bench setup
I lost one of the original caps and couldn't find a spare. These work exactly as expected. The white indicator line is crisp and easy to read.
Anonymous
Mar 20, 2026
Rating: 5/5
Bulk buy for repairs
We use these frequently for repairing customer equipment. They are durable and withstand daily turning without cracking. Highly recommended for professional use.
Anonymous
Mar 20, 2026
Rating: 5/5
Restored my vintage supply
My 1990s power supply looks brand new again. The knobs snap on securely and the rotation is smooth. Very happy with this purchase.
Anonymous
Mar 04, 2026
Rating: 4/5
Good quality, slightly different shade
The build quality is solid and they function well. The black color is a tiny bit lighter than the original chassis, but it's barely noticeable unless you look closely.
Q: Do these come with a set screw?
A: No, these are push-on style caps that rely on friction fit and do not utilize set screws, matching the design of the original Agilent components.
Q: Is the plastic resistant to common lab solvents?
A: The ABS plastic offers good resistance to mild cleaning agents, but we recommend avoiding harsh solvents like acetone to prevent damage to the finish.
Q: Will these fit Agilent E3631A models?
A: Yes, these knob caps are designed to be compatible with the shaft sizes found on Agilent E3631A and similar series power supplies.
Q: Are these sold individually or in pairs?
A: Each package contains two knob caps, which is usually sufficient to replace a set of voltage and current control knobs on a single unit.
Q: What is the inner diameter of the shaft hole?
A: The inner diameter is approximately 6.35mm (1/4 inch), which is the standard size for most Agilent potentiometer shafts in this category.
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