Stock 1

Round Head Machine Screw · 1/4-20 x 1 in - Coarse Thread - Fasteners .250X1.0020RS

SKU: S-.250X1.0020RS

Round head machine screw for electrical goods and general equipment assembly. The 1/4-20 coarse thread and 1 in length are commonly used where a machine-thread fastener is needed for panels, enclosures, and metal components; actual fit depends on the mating hole, nut, or tapped thread.

What this product is for

This round head machine screw is used to fasten electrical panels, enclosures, boxes, brackets, and other equipment that require a machine-thread fastener rather than a sheet metal screw.

Use for

Electrical panel and enclosure assembly
Mounting metal components where 1/4-20 coarse thread is required
Service and replacement work using an existing 1 in machine screw length

Avoid for

Applications requiring a confirmed corrosion-resistant material when plating or alloy is not specified
Wood or masonry fastening without the correct anchor or insert
Any installation where head style or drive type must match an exact specification and has not been verified

Best for

Best for electricians and maintenance teams replacing or stocking common machine screws for electrical hardware where the key buying factors are thread size, length, and round head profile.

Installed in

Typically installed in electrical enclosures, control panels, junction boxes, equipment covers, and metal assemblies in commercial, industrial, and institutional work.

Why this product exists

It provides a reusable machine-thread fastening option for assemblies that need a more precise fit than thread-forming screws. A 1/4-20 screw is a common trade size for heavier hardware and bracket fastening. Actual compatibility depends on the mating nut, tapped hole, material thickness, and local installation requirements.

Compared with similar products

Compared with sheet metal screws: machine screws require a matching nut or tapped hole
Compared with flat head machine screws: round head screws remain proud of the surface
Compared with finer thread options: 1/4-20 is the common coarse thread size for general-purpose assembly

Specifications

Product type: Round head machine screw
Thread size: 1/4-20
Length: 1 in (approximately 25 mm)
Thread series: Coarse
Head style: Round head
Application: Electrical goods and general equipment assembly
Brand: Fasteners
Manufacturer part number: .250X1.0020RS

- SKU
  S-.250X1.0020RS
- Manufacturer Part #
  .250X1.0020RS
Length
1 in (approximately 25 mm)
Application
Electrical goods and general equipment assembly
Head Style
Round head
Thread Size
37001
Brands
White Label
Stock in Elmira
1

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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
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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

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Pickup is available from our Ontario locations for customers who prefer to collect their order directly.

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Flesherton pickup available
Call ahead for large or special-order items

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See our local delivery coverage below. Delivery charges may apply outside regular route areas or for oversized items.

Delivery Questions

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Yes, free delivery is available for qualifying contractor accounts and selected local delivery routes.

Can I pick up my order?

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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.

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