Screw Grommets

Image Part Number Description / PDF Quantity Rfq
60SGC00004

60SGC00004

Richco, Inc. (Essentra Components)

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

3000

EG-0-01

EG-0-01

Richco, Inc. (Essentra Components)

SCREW GROMMET #8/#10 NYLON NAT

0

60SGN01154

60SGN01154

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

3000

60SGN01122

60SGN01122

Richco, Inc. (Essentra Components)

GROMMET NUT, .350X.355 HOLE, .21

2000

SRSG6-04-01

SRSG6-04-01

Richco, Inc. (Essentra Components)

SCREW GROMMET #6 NYLON NATURAL

4308

60SGN00001

60SGN00001

Richco, Inc. (Essentra Components)

GROMMET NUT, .275X.290 HOLE, .03

8000

SRSG-9D

SRSG-9D

Richco, Inc. (Essentra Components)

SCREW GROMMET #8/#10 NYLON NAT

0

60SGN01182

60SGN01182

Richco, Inc. (Essentra Components)

GROMMET NUT, .370X.375 HOLE, .12

6000

SRSG-3D

SRSG-3D

Richco, Inc. (Essentra Components)

SCREW GROMMET #8/#10 NYLON NAT

2000

TFR-1

TFR-1

Richco, Inc. (Essentra Components)

SCREW GROMMET #8 NYLON NATURAL

0

60SGN01130

60SGN01130

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

5000

60SGN00013

60SGN00013

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

8060

60SGN01185

60SGN01185

Richco, Inc. (Essentra Components)

GROMMET NUT, .320X.335 HOLE, .03

5000

60SGN00004

60SGN00004

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

6950

60SGN01150

60SGN01150

Richco, Inc. (Essentra Components)

SCREW GROMMET NYLON NATURAL

5000

EG-6-01

EG-6-01

Richco, Inc. (Essentra Components)

SCREW GROMMET #8/#10 NYLON NAT

9694

60SGN00914

60SGN00914

Richco, Inc. (Essentra Components)

GROMMET NUT, .270X.275 HOLE, .03

6165

60SGN01190

60SGN01190

Richco, Inc. (Essentra Components)

GROMMET NUT, .335X.345 HOLE, .06

1996

VG-1

VG-1

Richco, Inc. (Essentra Components)

SCREW GROMMET #6-32 RUBBER BLACK

8262

60SGN00010

60SGN00010

Richco, Inc. (Essentra Components)

GROMMET NUT, .275X.290 HOLE, .03

2000

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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