Screw Grommets

Image Part Number Description / PDF Quantity Rfq
TFR-2

TFR-2

Richco, Inc. (Essentra Components)

SCREW GROMMET #8 NYLON NATURAL

466

G-403-SL35300

G-403-SL35300

Aearo Technologies, LLC – a 3M company

SCREW GROMMET SYNTHETIC RUB BLK

1694

60SGN01170

60SGN01170

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

11743

60SGN00073

60SGN00073

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

3000

771

771

Keystone Electronics Corp.

SCREW GROMMET M3 RUBBER BLACK

117200

G-410-V2575

G-410-V2575

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLK

400

G-427-C8012

G-427-C8012

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLK

1814

G-411-1

G-411-1

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLUE

27448

G-506-2

G-506-2

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC

0

60SGC00010

60SGC00010

Richco, Inc. (Essentra Components)

GROMMET NUT, .250X.281 HOLE, .02

3000

EG-8-01

EG-8-01

Richco, Inc. (Essentra Components)

SCREW GROMMET #8/#10 NYLON NAT

0

60SPG00004

60SPG00004

Richco, Inc. (Essentra Components)

GROMMET NUT, .270X.290 HOLE, .02

5000

60SPG00002

60SPG00002

Richco, Inc. (Essentra Components)

GROMMET NUT, .270X.290 HOLE, .02

2000

G-507-1

G-507-1

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLUE

832

G-410-C6050

G-410-C6050

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLK

2001

G-504-C8012

G-504-C8012

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLK

1960

UM-445-C8002

UM-445-C8002

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC

992

G-404-C8012

G-404-C8012

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLK

0

G-410-V2750

G-410-V2750

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLK

948

G-412-C8002

G-412-C8002

Aearo Technologies, LLC – a 3M company

SCREW GROMMET THERMOPLASTIC BLUE

1033

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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