The 4 inch machine screw is custom-made according to the client’s request or drawing. The screws have a uniform diameter the entire length of the shaft as opposed to tapered screws that have a pointed tip. They are used to fasten machine components, appliances, and more. Ever Hardware provides custom-made 4 inch machine screw and customizable packaging.

The slot screw drive has a single slot in the fastener head and is driven by a “common blade” or flat-bladed screwdriver. It was the first type of screw drive to be developed, and for centuries it was the simplest and cheapest to make. The slotted screw is common in simple woodworking applications but is not often seen in applications where a power tool would be used because a power driver tends to slip out of the head, potentially damaging the surrounding material. The tool used to drive a slot is called a common blade, standard, flat-blade, slot-head, flat-tip, or “flat-head/flathead” screwdriver.

Stainless steel does not readily corrode, rust or stain with water as ordinary steel does. However, it is not fully stain-proof in low-oxygen, high salinity, or poor air-circulation environments. There are different grades and surface finishes of stainless steel to suit the environment the alloy must endure. Stainless steel is used where both the properties of steel and corrosion resistance are required. Stainless steels contain sufficient chromium to form a passive film of chromium oxide, which prevents further surface corrosion by blocking oxygen diffusion to the steel surface and blocks corrosion from spreading into the metal’s internal structure. Passivation occurs only if the proportion of chromium is high enough and oxygen is present.

Ever Hardware makes the world a better place

Category 4 Inch Machine Screw
Finish Electro-Plating
Thread type Metric/Imperial/According to Request
Material Stainless Steel/Carbon Steel/Aluminum/Brass/Copper, etc.
Brand Ever Hardware
Place of origin China Mainland
Size Customized as required
4 Inch Machine Screw Custom Made Special Handle Slotted Long Big Washer Head Bolts Stainless Anti Rust Combo Engineering Adjusting Fastener Flat Fillister Head Allen Socket Drive Large Custom Marine SS Step Bolts

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How To Place An Order

  • Click the “Send Email” button below.

  • Send your drawing and specification to us.

  • Check the response and help us to confirm the details.

  • Check the quotation & invoice you received and confirm the price.

  • Arrange the prepayment and waiting for the delivery time we agreed on the quotation.

  • Ever Hardware Industrial Limited arrange the shipment and inform you the tracking message, waiting for your feedback and next cooperation.

What Client’s Say

Those look great! All the specs look perfect.
Kent De Mond
Perfect ! This is that I need.
Hernán Balboa
Thank you very much.
The bolts are perfect and they’re fits good.
Ashley
The nut fits perfect on our M2.5 screw part.
Height is also ok.
Mirjam
I tested the bolts this morning and they are perfect. Thank you so much.
Bill McDonald

We are professional on precision 4 inch machine screw and custom-made fasteners services!

This is where your amazing product design can go so your clients can feel all about the features and see how awesome it is!

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