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Control Knob · 1-1/4 in OD x 1/4 in ID · Panel Replacement · Control Panel Accessories K542180
SKU: EL-K542180
Control knob for panel and instrumentation applications with a 1-1/4 in outside diameter and 1/4 in inside diameter. Commonly used as a replacement knob where shaft size and overall knob diameter are the main fit checks; verify shaft style and fastening method before ordering.
What this product is for
This control knob is used to replace or complete a panel-mounted control where a 1/4 in shaft opening and approximately 1-1/4 in outside diameter are required. It suits control panels, instrumentation assemblies, and similar electrical operator interfaces.
Use for
- Control panel replacements
- Instrumentation and operator interface knobs
- Electrical enclosures where shaft fit is 1/4 in (approximately 6.4 mm)
Avoid for
- Applications where shaft style is unknown
- Installations requiring a confirmed pointer, skirt, or indexed dial
- Use where set-screw, push-on, or collet retention must be specifically matched and has not been verified
Best for
Best for maintenance buyers and panel builders replacing a missing or worn knob when the critical dimensions are 1-1/4 in OD (approximately 31.8 mm) and 1/4 in ID (approximately 6.4 mm).
Installed in
Typically installed on control panels, instrumentation faces, and electrical equipment with a compatible 1/4 in control shaft.
Why this product exists
It provides a simple operator interface for manual adjustment on electrical equipment. For replacement work, matching shaft diameter and knob diameter is typically the first buying check, followed by shaft profile and retention style. Actual fit depends on shaft shape, fastening method, and panel clearance.
Compared with similar products
Compared with other control knobs, this item is identified mainly by its 1-1/4 in outside diameter and 1/4 in inside diameter. Similar knobs may use set screws, push-on mounting, or collet fixing, so buyers should confirm the mounting style before purchase.
Specifications
- Product type: Control knob
- Part number: K542180
- Category: Control Panel Accessories
- Outside diameter: 1-1/4 in (approximately 31.8 mm)
- Inside diameter: 1/4 in (approximately 6.4 mm)
- Application: Electrical control panels and instrumentation
- Brand used in source data: Control Panel Accessories
- Note: Material, colour, shaft profile, and retention style were not reliably confirmed from live sources
- ApplicationElectrical control panels and instrumentation
- CategoryControl Panel Accessories
- Outside Diameter1-1/4 in (approximately 31.8 mm)
- NotesMaterial, colour, shaft profile, and retention style were not reliably conf
- Inside Diameter1/4 in (approximately 6.4 mm)
- BrandsWhite Label
- Stock in Elmira36
- Stock in Flesherton5
Aptico Supply Delivery
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Local delivery routes, pickup options, and contractor-focused service from our Elmira and Flesherton locations.
Delivery Built Around Electrical Contractors
Aptico Supply helps electricians, contractors, and commercial buyers get the electrical materials they need without unnecessary delays. Whether you are ordering for a jobsite, restocking service inventory, or arranging pickup, our delivery options are designed to keep work moving.
Free Daily Delivery
Free daily delivery is available for larger contractor accounts.
- Order by 9:00 AM for morning delivery
- Order by 2:00 PM for afternoon delivery
- Available in qualifying local delivery areas
Free Weekly Delivery
Free weekly delivery is available for smaller accounts in select service areas.
- Elmira area delivery: Tuesday
- Flesherton area delivery: Thursday
- Order by 11:00 AM on the route day
Pickup Options
Pickup is available from our Ontario locations for customers who prefer to collect their order directly.
- Elmira pickup available
- Flesherton pickup available
- Call ahead for large or special-order items
Local Delivery Areas
See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.
Delivery Questions
Do you offer free delivery?
Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.
Can I pick up my order?
Yes, pickup is available from our Elmira and Flesherton locations.
Do delivery charges apply?
Delivery charges may apply outside regular local routes, for smaller orders, or for oversized and heavy items.
Can you deliver to jobsites?
Yes, jobsite delivery may be available depending on the order size, location, and delivery schedule.
Need Electrical Supplies Delivered?
Contact Aptico Supply to confirm your delivery options, pickup availability, or contractor account eligibility.
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