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Imperial Phillips Pan Head Sealing Screws.

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Imperial Phillips Pan Head Sealing Screws

What are Imperial Phillips Pan Head Sealing Screws?

This self sealing variant of Accu’s standard Imperial Phillips Pan Head Screws is fitted with a captive O-Ring, pre-installed into a specialised groove in the underside of the screw head. As a result of this uniquely engineered sealing solution, when fastened into the housing material, the metal-to-metal contact prolongs the life of the rubber O-Ring whilst ensuring that a 360° seal is not compromised even under high pressure.

As this self seal screw is tightened, with a Phillips Screwdriver or Phillips Drive Bit, the pre-fitted O-Ring is squeezed outwardly and forms a leak-proof hermetic seal. This prevents exposure to contaminants such as oil, chemicals, moisture and dirt, ensuring optimal performance within the machinery.

Trusted by the military and defense industries for over 25 years, meeting Military Specifications MS3212 / 3213 and NASM82496, ZAGO Self Seal Screws are designed to operate even under extreme pressures and temperature conditions, being pressure-resistant to 1,500 psi.

Accu is able to supply Imperial Self Seal Screws in a variety of head and drive types and O-Ring Materials. For availability of alternative Screw and O-Ring materials not listed below, please contact our team.


Imperial Phillips Pan Sealing Screws are manufactured from A2 Stainless Steel as standard. O Ring Materials within this range include Buna, Fluorosilicone and Viton (Fluorocarbon). Stainless Steel Sealing Screws can also be supplied with a pre-applied AccuLock thread locking patch, offering increased resistance to self loosening through harsh vibrations.


Accu’s Imperial Phillips Pan Sealing Head Screws are produced to the ANSI B18.6.3 standard and are supplied in thread sizes 1/4 inch to No. 10, with lengths ranging from 1/4 inch to 1 1/4 inch.

Metric Self Seal Phillips Pan Head Screws can also be purchased from Accu.

Bespoke Imperial Phillips Pan Head Sealing Screws Manufacture.

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

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