Screw - Phillips Head (1/4", 4-40, 10 pack)

There are your standard Philips-head 4-40 screws. They are 1/4" long and come in packs of ten. This is the screw size we use in most of the holes for our breakout boards. Check below for other associated hardware.

Screw - Phillips Head (1/4", 4-40, 10 pack) Product Help and Resources

Wireless Audio Bluetooth Adapter w/ BC127

December 14, 2017

Build a custom wireless audio Bluetooth adapter using BlueCreation's BC127 and add it to your old speaker system!

Core Skill: DIY

Whether it's for assembling a kit, hacking an enclosure, or creating your own parts; the DIY skill is all about knowing how to use tools and the techniques associated with them.


Skill Level: Noob - Basic assembly is required. You may need to provide your own basic tools like a screwdriver, hammer or scissors. Power tools or custom parts are not required. Instructions will be included and easy to follow. Sewing may be required, but only with included patterns.
See all skill levels


Looking for answers to technical questions?

We welcome your comments and suggestions below. However, if you are looking for solutions to technical questions please see our Technical Assistance page.

  • Add a warning for people like me: "Remember, you need double the amount of bolts as standoffs"

  • bobdabiulder / about 9 years ago / 1

    TO-220 Compatibility?

  • SomeGuy123 / about 13 years ago / 6

    These screws are a work of art.
    Look at the way the threads elegantly curve and spiral from the point to the finely crafted head. The 'x' is sliced into the head of the screw as if it is artistically stamped into a stick of partially melted silver butter.

  • Member #529399 / about 10 years ago / 1

    Wont fit the SparkFun LCD-09568 20x4 LCD. The LCD PCB board has metal through holes and the screws are one diameter size too large to fit! What a disappointment!!!

    COM-08653 SparkFun Keypad - 12 Button has plastic housing with four mounting screw holes. The holes are smaller than this screw set but you can easily screw them through with slight pressure cutting threads into the button pad housing holes.

  • icyfyer / about 12 years ago / 1

    Heads up: these screws do NOT fit into the mounting holes of this LCD without modification to the holes:

    It's very close, and maybe with a little persuasion, but if you're planning to use these to hold the LCD in place, and screw these into the standoffs sold below, you'll need that persuasion.

    • correct. that's why they aren't related to eachother :-)

      but you can fit them in there, but you're effectively threading them into the PCB.

      • Clebio / about 10 years ago / 1

        So... what are you supposed to use, then? I'm trying to find the right stand-offs for this CMOS camera: The holes on the four corners of that camera are something like 2mm in diameter.

        • Unfortunately, we don't have anything. You would need either an M2 screw, or maybe a 2-56. Hit up a home depot or hardware store and look in their actual hardware section under machine screws. You should be able to find something.

  • still_learning / about 13 years ago / 1

    Any chance you can also sell #4 washers?

  • swort / about 13 years ago / 1

    Do these screws fit with makerbeam?

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