Screw Grommets

Image Part Number Description / PDF Quantity Rfq
769

769

Keystone Electronics Corp.

SCREW GROMMET #6-32 RUBBER BLACK

27974300

775

775

Keystone Electronics Corp.

SCREW GROMMET #6-32 RUBBER BLACK

73201300

768

768

Keystone Electronics Corp.

SCREW GROMMET M3 RUBBER BLUE

21596100

772

772

Keystone Electronics Corp.

SCREW GROMMET M3 RUBBER BLUE

1341300

767

767

Keystone Electronics Corp.

SCREW GROMMET M3 RUBBER BLACK

7087300

774

774

Keystone Electronics Corp.

SCREW GROMMET M3 RUBBER BLUE

4741500

765

765

Keystone Electronics Corp.

SCREW GROMMET #6-32 RUBBER BLACK

2027900

770

770

Keystone Electronics Corp.

SCREW GROMMET #6-32 RUBBER BLUE

653452000

766

766

Keystone Electronics Corp.

SCREW GROMMET #6-32 RUBBER BLUE

2371

776

776

Keystone Electronics Corp.

SCREW GROMMET #6-32 RUBBER BLUE

335

771

771

Keystone Electronics Corp.

SCREW GROMMET M3 RUBBER BLACK

117200

Screw Grommets

1. Overview

Screw grommets are specialized fastening components combining threaded screws with protective grommets. They provide secure mechanical fixation while protecting mating surfaces from scratches, electrical insulation, or environmental sealing. These hybrid components are critical in electronics, automotive, and industrial equipment assembly, offering simultaneous mechanical and functional performance.

2. Major Types & Functional Classification

TypeFunctional FeaturesApplication Examples
Metal Screw GrommetsHigh load capacity, EMI shielding, corrosion resistanceMilitary electronics enclosures
Plastic Screw GrommetsLightweight, electrical insulation, chemical resistanceConsumer electronics assembly
Rubber Insert GrommetsVibration damping, waterproof sealingMarine equipment panels
Multi-hole Grommet PlatesBundle cable management with threaded fixationIndustrial control cabinets

3. Structural Composition

Typical screw grommets feature: - Central threaded insert (steel/brass/aluminum) - Outer grommet body (TPE/EPDM/rubber) - Flanged head design for load distribution - Internal sealing lip structure - Anti-rotation notches on base

4. Key Technical Specifications

ParameterImportance
Material Hardness (Shore A 30-80)Determines sealing effectiveness and durability
Thread Engagement DepthAffects pull-out strength (critical for load-bearing)
Temperature Range (-40 C to +120 C)Defines operational environment limits
IP Protection Rating (IP54-IP68)Specifies dust/water ingress protection
Torque Resistance (0.5-5.0 Nm)Determines installation reliability

5. Application Sectors

Primary industries include: - Automotive (door panel fastening) - Telecommunications (router chassis assembly) - Aerospace (avionics mounting) - Medical equipment (diagnostic device enclosures) - Renewable energy (solar inverter panel mounting)

6. Leading Manufacturers

ManufacturerKey Products
PEM StandsSPT-250 series self-clinching grommets
RS ProMulti-seal cable entry grommets
IgusTribo-resistant polymer screw grommets
3MEMI shielding grommet with threaded bushing

7. Selection Guidelines

Key considerations: 1. Environmental factors (UV exposure, chemical contact) 2. Required protection class (IP rating) 3. Vibration/dynamic load conditions 4. Electrical conductivity requirements 5. Installation tooling compatibility 6. Regulatory compliance (RoHS, REACH)

8. Industry Trends

Current developments include: - Nano-coated materials for self-cleaning surfaces - Integrated smart sensors in grommet structures - Biodegradable polymer composites - Automated vision-based installation systems - Multi-functional grommets combining EMI shielding with sealing

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