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Imperial Security Socket Countersunk Sealing Screws.

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Imperial Security Socket Countersunk Sealing Screws

What are Imperial Security Socket Countersunk Sealing Screws?

Imperial Security Socket Countersunk Sealing Screws are configured with a built-in rubber O-ring which creates a permanent hermetic seal around the underside of the screw head. This 360° seal prevents contaminants and toxins from seeping into the installation environment, protecting and fortifying the machinery.

It’s recommended to install a clearance hole into the mating panel, prior to installation as this will allow the O-Ring to reshape itself within this gap, ensuring optimal performance. As a result, this means that a permanent, airtight seal is created, permitting metal-to-metal contact.

As a high-tech Countersunk Sealing Screw, the primary purpose of this fastener is to protect against damage caused by aggressive substances, even under extreme temperatures and pressures. Imperial Security Countersunk Sealing Screws are designed to meet Military Standard NASM 82496 and are pressure resistant to 1500 psi.

Fitted with a Security Socket Drive, this type of Self Seal Screw is compatible with our range of Security Hexagon Drive Bits. Thanks to this tamper proof drive, this fastener offers increased resistance to vandalism when compared to a standard Socket Drive.

Accu also lists Imperial Torx Security Countersunk Sealing Screw, ideal for high torque transmission and increased cam-out resistance.


This range of Security Socket Countersunk Sealing Screws are manufactured from 304 (A2) Stainless Steel as standard.

This range of Sealing Screws feature a number of material options for the captive O Ring, with Buna, Fluorosilicone and Viton (Fluorocarbon) variants all offered as standard. Other Screw and O Ring materials can be requested as required.

AccuLock, our specialist thread locking patch, can be pre-applied to these Stainless Steel screws as a standard finish.


Manufactured to the ANSI B18.6.3 standard, Accu’s range of Imperial Security Socket Countersunk Sealing Screws are available in 1/4 to No. 10 thread sizes, with lengths from 1/4 inch to 1 3/4 inch.

Accu is also able to supply Metric Sealing Security Socket Countersunk Screws.

Bespoke Imperial Security Socket Countersunk Sealing Screws Manufacture.

High precision, bespoke manufacture of Imperial Security Socket Countersunk Sealing Screws to customer specification. State of the art facilities specialising in both small batch prototyping and large scale manufacture.

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