Custom Stainless Steel Hex Socket Head Sealing Screws with O-Ring

Short Description:

Custom stainless steel hex socket head sealing screws feature an O-ring positioned beneath the cylindrical head. When correctly matched to the mating surface and tightened within the specified torque range, the O-ring compresses to help reduce the ingress of water, dust, oil and air. Screw materials, dimensions, thread specifications, O-ring compounds and surface finishes can be customized according to drawings, samples and assembly requirements.

Product Detail

Product Tags

Product name	Screw
Size	M0.8-M24, According to customer drawings. length 2-50mm, M6/M8 length up to 200mm.
Grade	4.8, 6.8, 8.8, 10.9, 12.9, A2-70, A2-80, A2-100, A4-80, A4-100
Standard	ISO, GB, BS, DIN, ANSI, JIS, Non-standard
Material	1. Stainless Steel: 201, 303, 304, 316, 410, 416, 430 2. Carbon Steel: 1008, 1012, 1018, 1022, 1035, 1039, 40Cr 3. Copper: H62, H65, H68 4. Aluminum: 5056, 6061, 6063, 7075 5. Alloy Steel: SCM435, 10B21, 6150, S2 6. According to customer requirements
Surface treatment	Zn-Plated, Ni-Plated, Passivated, Black Oxide, Anodize, Chrome Plated, Electro Painting, Hot Dip Galvanizing (H.D.G.), Dacromet, Geomet etc. Customized surface treatment available.
Tolerance	According to ISO, GB, BS, DIN, ANSI, JIS standards or customer requirements
Custom Service	Custom Manufacturing Based on Drawings, Samples and Specifications
Packaging	Plastic Bags, Blister Trays, Reel Packaging, SMT Packaging, Customized Packaging Available
Certificate	ISO14001 / ISO9001 / IATF16949 / GJB9001C
Lead time	10-30 working days as usual, It will be based on the detailed order quantity

Key Product Features

Integrated O-Ring Seal

The O-ring is positioned beneath the screw head to create a compressed sealing interface during installation.

Controlled Hex Socket Drive

The internal hex drive supports controlled tightening and is suitable for compact or recessed assembly locations.

Fully Threaded Design

The long machine thread provides flexible engagement depth for housings, covers, brackets and precision components.

Custom Sealing Configuration

Screw dimensions, head geometry, O-ring material and sealing contact design can be adjusted to suit the mating component.

Typical Uses

Electrical and Electronic Enclosures

Suitable for electrical housings, control units, terminal assemblies and electronic covers where moisture or dust ingress needs to be reduced.

Sensors and Precision Instruments

Used in sensor housings, measuring devices and precision assemblies requiring compact fastening and controlled sealing.

Automotive Components

Applicable to lamps, electronic modules, interior assemblies, brackets and other automotive components, subject to application validation.

Industrial Equipment

Suitable for machine covers, automation equipment, control cabinets and mechanical housings exposed to dust, oil or moisture.

Outdoor Equipment

Can be used in outdoor enclosures, communication equipment and protective housings when the selected material and O-ring are compatible with the environment.

Fluid-Related Assemblies

May be evaluated for covers, connectors and low-pressure equipment where leakage reduction is required. Pressure and sealing performance must be confirmed through testing.

Product Application

These hex socket O-ring sealing screws are suitable for fastening covers, housings, brackets and precision components where both mechanical fastening and environmental sealing are required. The compact socket head supports controlled installation, while the O-ring helps reduce ingress around the screw position.

For demanding sealing applications, the screw, O-ring, mating surface and installation torque should be evaluated as one complete assembly rather than as separate components.