The round washer head machine screw combines the advantages of the pan head but has a washer built onto the head to increase head diameter and prevent overdriving in softwoods while providing a maximum bearing surface. These fasteners have a Square-Phillips combo recess drive designed to offer the dependability of a square drive recess with the convenience and after-market serviceability of a Phillips drive. In addition, they have a coarse thread design for superior holding power while reducing splitting or crumbling of the material, allowing the fastener to install rapidly with full thread engagement after just one revolution. The threaded surface is nearly perpendicular to the screw axis, providing great resistance to pullout. Ever Hardware provides the custom-made round washer head machine screw and customizable packaging.
The hex socket screw drive has a hexagonal recess and may be driven by a hex wrench, also known as an Allen wrench, Allen key, hex key, or inbus as well as by a hex screwdriver (also known as a hex driver) or bit. Tamper-resistant versions with a pin in the recess are available.
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.
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| Category | Round Washer Head 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 |
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What Client’s Say
Those look great! All the specs look perfect.
Perfect ! This is that I need.
Thank you very much.
The bolts are perfect and they’re fits good.
The nut fits perfect on our M2.5 screw part.
Height is also ok.
I tested the bolts this morning and they are perfect. Thank you so much.
We are professional on precision round washer head machine screw and custom-made fasteners services!
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