M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): SHPVOR-M4-8-A2

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M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) (pack of 1)

Accu Product Code (APC): SHPVOR-M4-8-A2

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Accu Product Code (APC): SHPVOR-M4-8-A2
Thread Size: M4 (4 mm)
Thread Length (L): 8 mm
O-Ring Material: Rubber - Viton
Material: Stainless Steel - (A2) / Rubber - Viton
Finish: Natural
Drive Size: T20
Drive Type: Torx
Fully Threaded: Yes
Halogen Free Yes/No: No
Head Diameter (D): 8 mm
Head Height (H): 3.25 mm
Manufacturing Standard: ISO7045
Material Classification: Screw / O-Ring
Material Family: Stainless Steel / Rubber
O-Ring Standard Temp Range: -29 °C-204 °C (-20 °F-400 °F)
Pressure Tested To: 1500 PSI
Recommended Clearance Hole: 4.546 mm
Screw Thread Pitch: 0.7 mm
System of Measurement: Metric
Weight per 100 Units: 163 g

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M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) Description

The M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) has the following features:

Drive Size: T20
Drive Type: Torx
Natural Finish
Fully Threaded
Head Diameter (D): 8 mm
Head Height (H): 3.25 mm
Manufacturing Standard: ISO7045
Stainless Steel - (A2) / Rubber - Viton
Screw / O-Ring Material Classification
Stainless Steel / Rubber Material Family
Rubber - Viton O-Ring Material
O-Ring Standard Temp Range: -29 °C-204 °C (-20 °F-400 °F)
Pressure Tested To: 1500 PSI
Recommended Clearance Hole: 4.546 mm
Screw Thread Pitch: 0.7 mm
System of Measurement: Metric
Thread Length (L): 8 mm
Thread Size: M4 (4 mm)

Discover more about the Metric Torx Pan Head Sealing Screws range.

This range of self sealing screws features a Pan shaped head fitted with a captive O-Ring, designed to form a 360° seal when fastened. A highly specialised type of fastener, this type of Sealing Screw features the popular Torx Drive (6 Lobe), which provides increased resistance to cam-out during installation.

Unlike a standard Torx Pan Head Screw, this self sealing variant is uniquely engineered with a groove under the head. This means that the pre-fitted rubber O-Ring allows for a tighter seal and metal-to-metal contact with the housing material when installed, compared to using a separate O-Ring.

The air-tight hermetic seal provided by these screws is designed to maintain optimum performance in machinery, preventing leakage of fluids, gases and contaminants, even under extreme pressures and temperature conditions.

Manufactured in the USA by ZAGO to meet Military Spec, sealing screws are supplied by Accu in a range of head and drive types, with 3 O-Ring material options (Buna, Fluorosilicone and Viton) available as standard. Alternative materials are available on request.

Materials

Metric Torx Pan Sealing Screws are available from Accu in A2 Stainless Steel as standard. O Ring Material options for this range include Buna, Fluorosilicone and Viton (Fluorocarbon). AccuLock specialist thread locking patches can be applied to these screws for increased resistance to vibrations.

Sizes

Accu’s range of Sealing Torx Pan Head Screws are manufactured in accordance with the ISO 7045 standard and are available in metric M3 to M6 thread diameters, with lengths ranging from 4mm to 20mm.

Imperial Self Seal Torx Pan Head Screws are also available from Accu.

Shipping Information

Shipping Destinations:

Worldwide view delivery information

Weight (100 items):

0.163kg

Component History

Product First Available:

Thursday, September 30, 2021

Stock Last Updated:

07:22 AMThursday, June 4, 2026

Specification Last Updated:

Thursday, June 4, 2026

Barcodes

APC (Accu Product Code):

SHPVOR-M4-8-A2

EAN13 (International Article No.):

5054328291454

ASIN (Amazon Stock Identification No.):

ASIN not defined.

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Thread Size

Thread Length (L)

O-Ring Material

Material

Finish

Drive Size

Drive Type

Fully Threaded

Halogen Free Yes/No

Head Diameter (D)

Head Height (H)

Manufacturing Standard

Material Classification

Material Family

O-Ring Standard Temp Range

Pressure Tested To

Recommended Clearance Hole

Screw Thread Pitch

System of Measurement

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M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) (pack of 1)

M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) M4 x 8mm T20 Torx Pan Head Sealing Screws With Viton O-Ring - Stainless Steel (A2) (pack of 1)

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