Skip to main content
Home / Connectors and Fasteners / M3-M20 PVC External Hex Head Screws, Gray Insulated Bolts, Acid and Alkali Resistant Plastic Fasteners

Attributes

Brand -
Category Industrial Small Parts / Connectors and Fasteners
Origin -
Material Polyvinyl Chloride (PVC)
Head Style Hexagon Head
Color Gray
Thread Size Range M3, M4, M5, M6, M8, M10, M12, M16, M20
Drive Type External Hex
Electrical Property Insulated
Chemical Resistance Acid and Alkali Resistant
Thread Standard Metric Coarse
Surface Finish Matte
Primary Application Chemical Processing and Water Treatment

5 reviews

A

Anonymous

Apr 12, 2026

Rating: 5/5

Durable plastic

Withstood chemical exposure better than expected. The hex head makes installation easy with standard tools.

A

Anonymous

Mar 30, 2026

Rating: 4/5

Good value pack

Most sizes fit well for my needs. The gray color matches my equipment nicely. Would prefer if nuts were included.

A

Anonymous

Feb 24, 2026

Rating: 4/5

Solid fasteners

Head size is standard which is great. Thread engagement is smooth. Good product for the price point.

A

Anonymous

Feb 23, 2026

Rating: 5/5

Excellent corrosion resistance

Used these in my water treatment project and they held up perfectly against the chemicals. Very happy with the insulation properties.

A

Anonymous

Feb 09, 2026

Rating: 5/5

Perfect for non-conductive needs

Safety first in my lab. These plastic bolts ensure no electrical conductivity where I need it. High quality PVC.

5 FAQ

Q: Do you stock sizes larger than M20?

A: Currently we stock sizes up to M20. Please contact us for custom bulk orders regarding larger sizes.

Q: Is this material resistant to UV exposure?

A: Standard PVC has limited UV resistance. For outdoor use, we recommend protective coating or shelter.

Q: Are matching PVC nuts included in the package?

A: No, this listing is for screws only. Matching nuts are sold separately in our store.

Q: What is the tensile strength compared to steel?

A: These are suitable for light to medium industrial loads. They are not a direct strength replacement for steel bolts.

Q: What is the maximum operating temperature for these screws?

A: The recommended maximum continuous operating temperature is up to 60 degrees Celsius.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Micro-Hyperbaric Oxygen Chamber - Rigid Sit/Lie Model for Home and Commercial Use, High-Altitude Oxygen Therapy Room

Micro-Hyperbaric Oxygen Chamber - Rigid Sit/Lie Model for Home and Commercial Use, High-Altitude Oxygen Therapy Room

$150.00

Stainless Steel Illuminated Hotel Room Number Plate, Smart Electronic Door Sign with Do Not Disturb and Make Up Room Bell

Stainless Steel Illuminated Hotel Room Number Plate, Smart Electronic Door Sign with Do Not Disturb and Make Up Room Bell

$10.00

Paper Blending Stump A1zdq001 - Large Art Sketch Highlighting Tool for Students

Paper Blending Stump A1zdq001 - Large Art Sketch Highlighting Tool for Students

$4.15

Continental Run-Flat Tires 225 235 245 255 265/45 50 55R17R18R19R20R21R22

Continental Run-Flat Tires 225 235 245 255 265/45 50 55R17R18R19R20R21R22

$350.00

3D Printing Pen for Children - 3D Stereoscopic Drawing Toy for Boys and Girls (Ages 6+)

3D Printing Pen for Children - 3D Stereoscopic Drawing Toy for Boys and Girls (Ages 6+)

$35.70

MOOCAT Loose-Leaf Refill – 300G Wood Pulp Fine-Texture Blank Paper for OC Binders A9/B5/M5/M6 Hand Drawing

MOOCAT Loose-Leaf Refill – 300G Wood Pulp Fine-Texture Blank Paper for OC Binders A9/B5/M5/M6 Hand Drawing

$12.90

Lanzhai Calligraphy Wool Felt Mat – Mini Arm Rest and Inkstone Pad with Creative Chinese Style Design for Painting and Writing

Lanzhai Calligraphy Wool Felt Mat – Mini Arm Rest and Inkstone Pad with Creative Chinese Style Design for Painting and Writing

$7.48

Qing Dynasty Calligrapher Lin Zexu Guangeti Small Regular Script: Buddha Speaks of the Infinite Life Sutra, Brush Tracing Practice Long Scroll Copybook

Qing Dynasty Calligrapher Lin Zexu Guangeti Small Regular Script: Buddha Speaks of the Infinite Life Sutra, Brush Tracing Practice Long Scroll Copybook

$8.80

Lightweight Ceramsite Bottom Padding, Professional Backfill for Sunken Bathroom Engineering and Construction, Large Granules

Lightweight Ceramsite Bottom Padding, Professional Backfill for Sunken Bathroom Engineering and Construction, Large Granules

$30.10

[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament

[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament

$49.00

Sanitary Juice Beverage Dairy Mixing Tank Food Pharmaceutical Electric Heating Emulsification Reaction Dissolution Tank

Sanitary Juice Beverage Dairy Mixing Tank Food Pharmaceutical Electric Heating Emulsification Reaction Dissolution Tank

$4,122.00

Zhi Paper Calligraphy Copybook: Shen Du's Red Cliff Ode, Jingzhai Zhen, and Bu Zi Qi Shuo - Small Regular Script Cards for Tracing Practice

Zhi Paper Calligraphy Copybook: Shen Du's Red Cliff Ode, Jingzhai Zhen, and Bu Zi Qi Shuo - Small Regular Script Cards for Tracing Practice

$17.00

Maike Outdoor Waterproof Dry Bag - Crossbody Travel Backpack for Rafting Diving and Beach Activities

Maike Outdoor Waterproof Dry Bag - Crossbody Travel Backpack for Rafting Diving and Beach Activities

$19.90

Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, and Pu'erh Loose Leaf Tea in Porcelain Jars

Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, and Pu'erh Loose Leaf Tea in Porcelain Jars

$140.41

Transparent Retainer Storage Case – Portable Soaking and Cleaning Box for Orthodontic Appliances and Dentures

Transparent Retainer Storage Case – Portable Soaking and Cleaning Box for Orthodontic Appliances and Dentures

$8.42

Original Wang Xizhi Huangting Small Regular Script Calligraphy Copybook for Soft/Hard Tip Pens Tear-Off Card Precise Tracing Kaishu Huan'e Tie

Original Wang Xizhi Huangting Small Regular Script Calligraphy Copybook for Soft/Hard Tip Pens Tear-Off Card Precise Tracing Kaishu Huan'e Tie

$35.70

Foldable Kitchen Sink Dish Drying Rack - Silicone Roll-Up Mat and Countertop Organizer

Foldable Kitchen Sink Dish Drying Rack - Silicone Roll-Up Mat and Countertop Organizer

$25.40

Rapid Folding Shopping Cart, Small Trolley for Stairs, Lightweight Portable Home Handcart, Supermarket Pushcart and Vegetable Basket

Rapid Folding Shopping Cart, Small Trolley for Stairs, Lightweight Portable Home Handcart, Supermarket Pushcart and Vegetable Basket

$178.39

Over-Toilet Storage Rack - No-Drill Toilet Paper Holder with Multi-Compartment Shelves for Wet Wipes and Aromatherapy

Over-Toilet Storage Rack - No-Drill Toilet Paper Holder with Multi-Compartment Shelves for Wet Wipes and Aromatherapy

$19.71

Stainless Steel Planter Pot - Outdoor Vegetable and Flower Growing Box for Balcony, Rooftop, Courtyard, Auto-Drainage, Customizable

Stainless Steel Planter Pot - Outdoor Vegetable and Flower Growing Box for Balcony, Rooftop, Courtyard, Auto-Drainage, Customizable

$42.50

Stainless Steel Over-Toilet Storage Rack, Multi-Function Floor-Mounted or Wall-Mounted Multi-Tier Organizer for Bathroom, Toilet, and Laundry

Stainless Steel Over-Toilet Storage Rack, Multi-Function Floor-Mounted or Wall-Mounted Multi-Tier Organizer for Bathroom, Toilet, and Laundry

$50.00

[Chip 3.0 Upgraded Model] Senzhou TDS Water Quality Tester for Tap and Drinking Water Health Monitoring

[Chip 3.0 Upgraded Model] Senzhou TDS Water Quality Tester for Tap and Drinking Water Health Monitoring

$22.90

Here and Now Pocket Calligraphy Copybook: Wen Zhengming Small Regular Script for Adult Beginners

Here and Now Pocket Calligraphy Copybook: Wen Zhengming Small Regular Script for Adult Beginners

$18.00

Southern Red Agate Loose Beads for DIY Crystal Jewelry Making, Round Bead Accessories and Materials

Southern Red Agate Loose Beads for DIY Crystal Jewelry Making, Round Bead Accessories and Materials

$1.10

3-Tier, 4-Tier, 5-Tier Double-Layer Drainage Rack, Water Bucket Stand, Floor-Standing Thickened Rack

3-Tier, 4-Tier, 5-Tier Double-Layer Drainage Rack, Water Bucket Stand, Floor-Standing Thickened Rack

$276.32

Multi-Layer Over-Toilet Storage Rack for Bathroom, Drill-Free Floor Stand for Washing Machine and Balcony Organization

Multi-Layer Over-Toilet Storage Rack for Bathroom, Drill-Free Floor Stand for Washing Machine and Balcony Organization

$46.96

Thickened Industrial Scouring Pad Emery Stainless Steel Abrasive Cloth Pot Scrubber Rust Removal and Polishing Wheel

Thickened Industrial Scouring Pad Emery Stainless Steel Abrasive Cloth Pot Scrubber Rust Removal and Polishing Wheel

$7.28

Wall-Mounted Bathroom Toilet Paper Holder and Tissue Dispenser Rack

Wall-Mounted Bathroom Toilet Paper Holder and Tissue Dispenser Rack

$49.00

Arches French Watercolor Paper 300g/640g/850g, Cold/Hot Press, 100% Cotton, Deckled Edge, 2K/4K/8K

Arches French Watercolor Paper 300g/640g/850g, Cold/Hot Press, 100% Cotton, Deckled Edge, 2K/4K/8K

$29.60

Wen Xin Tang Yan Zhenqing Duobao Pagoda Stele Calligraphy Copybook, Tang Regular Script, Adult Beginner Calligraphy Practice Cards

Wen Xin Tang Yan Zhenqing Duobao Pagoda Stele Calligraphy Copybook, Tang Regular Script, Adult Beginner Calligraphy Practice Cards

$49.30