Skip to main content
Home / Screws / 304 Stainless Steel Self-Tapping Screw GB846 Cross Countersunk Extended Wood Screw Flat Head Slotted C2 M3 M4 Size 5mm 6mm

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Head Style Flat Head Countersunk
Drive Type Cross (Phillips) / Slotted
Thread Type Self-Tapping
Standard GB846
Available Sizes M3, M4
Length Options 5mm, 6mm
Finish Polished Silver
Corrosion Resistance High (Suitable for Outdoor Use)
Application Wood, Plastic, Thin Metal Sheets

6 reviews

A

Anonymous

Mar 26, 2026

Rating: 5/5

Fast shipping and great product

Arrived quickly and well-organized. The quality of the steel is evident as soon as you hold them. They feel heavy and durable compared to cheaper alternatives.

A

Anonymous

Mar 23, 2026

Rating: 5/5

Perfect for marine applications

Used these on a small boat repair. After a few weeks of exposure to salt water, there is absolutely no sign of corrosion. Highly recommended for marine environments.

A

Anonymous

Mar 18, 2026

Rating: 5/5

Excellent quality stainless steel

These screws are exactly what I needed for my outdoor deck project. The 304 stainless steel ensures they won't rust, and the dual drive head makes installation very flexible.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Precise sizing

Ordered the M4 6mm size and they fit perfectly into my pre-drilled holes. The countersunk head sits flush with the surface, giving a very professional finish.

A

Anonymous

Mar 10, 2026

Rating: 4/5

Solid hardware

Very sturdy screws. The cross slot is deep enough to prevent cam-out. Would buy again for future woodworking projects.

A

Anonymous

Mar 02, 2026

Rating: 4/5

Good value, sharp threads

The self-tapping feature works great on soft wood. I deducted one star only because the packaging was a bit flimsy, but the screws themselves are top-notch.

5 FAQ

Q: Is this product sold individually or in packs?

A: This listing is for a pack of screws. Please select your desired quantity and size combination from the dropdown menu before adding to cart.

Q: Are these screws suitable for use in saltwater environments?

A: Yes, being made of 304 Stainless Steel, these screws offer high corrosion resistance and are suitable for marine and outdoor saltwater applications.

Q: Do I need to pre-drill holes for wood?

A: While these are self-tapping, we recommend pre-drilling a pilot hole slightly smaller than the screw diameter for hardwoods to prevent splitting and ensure a clean finish.

Q: Can I use a standard Phillips screwdriver for these?

A: Absolutely. These screws feature a cross (Phillips) drive compatible with standard Phillips screwdrivers, though they also have a slot for flathead drivers if needed.

Q: What is the difference between M3 and M4 sizes?

A: M3 refers to a nominal diameter of 3mm, while M4 refers to 4mm. Please check your project specifications to select the correct diameter and length.

Explore your interests

All Categories
Best Seller (30)
New List (30)
New 968 Fast-Drying Super Glue - Strong Bond for Metal, Magnets, Rubber, and Aluminum Alloy

New 968 Fast-Drying Super Glue - Strong Bond for Metal, Magnets, Rubber, and Aluminum Alloy

$18.20

German Imported Stone Removal Hook Car Tire Stone Cleaning Tool Vehicle Foldable Multi-Function Stone Remover

German Imported Stone Removal Hook Car Tire Stone Cleaning Tool Vehicle Foldable Multi-Function Stone Remover

$11.34

[10% Off for 2 Items] Double-Sided Wool Felt Mat for Calligraphy and Painting, Student Practice Sheet, Brush Writing Desk Pad, Four Treasures of the Study Set

[10% Off for 2 Items] Double-Sided Wool Felt Mat for Calligraphy and Painting, Student Practice Sheet, Brush Writing Desk Pad, Four Treasures of the Study Set

$6.63

In Stock Special Offer: QS18VP6LLPQ8 Sensor - Price Negotiable

In Stock Special Offer: QS18VP6LLPQ8 Sensor - Price Negotiable

$600.00

Broccoli Vegetable Washing Machine for Pre-made Dishes, Water Bath Cleaning Equipment with Bubble System for Herbs and Export-Grade Produce

Broccoli Vegetable Washing Machine for Pre-made Dishes, Water Bath Cleaning Equipment with Bubble System for Herbs and Export-Grade Produce

$615.00

Hongkedou Oxford Fabric Bag-in-Bag Divider Insert, Stiff Makeup Organizer with Zipper, Waterproof Small Women's Pouch

Hongkedou Oxford Fabric Bag-in-Bag Divider Insert, Stiff Makeup Organizer with Zipper, Waterproof Small Women's Pouch

$22.00

Pad Printing Machine Accessories: Positioning Clamps, T-Shaped Holders, and Locking Irons

Pad Printing Machine Accessories: Positioning Clamps, T-Shaped Holders, and Locking Irons

$0.60

Japanese High-Concentration Oxalic Acid Toilet Cleaner, Powerful Urine Scale Remover and Stain Eliminator

Japanese High-Concentration Oxalic Acid Toilet Cleaner, Powerful Urine Scale Remover and Stain Eliminator

$23.82

Biliansheng No-Shave Hair Transplant - Hairline and Crown Thinning Treatment, Hair Loss Detection Service

Biliansheng No-Shave Hair Transplant - Hairline and Crown Thinning Treatment, Hair Loss Detection Service

$86.00

Laorentou Paper Blending Stump for Sketching - Professional Art Supply for Highlighting and Pastel Work

Laorentou Paper Blending Stump for Sketching - Professional Art Supply for Highlighting and Pastel Work

$6.80

Fast-Drying Glue for ABS Plastic - Transparent, High-Strength, Odorless, Non-Whitening Instant Adhesive for ABS and PC Plastics

Fast-Drying Glue for ABS Plastic - Transparent, High-Strength, Odorless, Non-Whitening Instant Adhesive for ABS and PC Plastics

$58.96

Manufacturer Supply Oxygen Absorber Oxygen Generator Stable Performance Hydrogen-Rich Machine Hydrogen Generator

Manufacturer Supply Oxygen Absorber Oxygen Generator Stable Performance Hydrogen-Rich Machine Hydrogen Generator

$5,058.00

POPMART CRYBABY Vacation Mode On - Vinyl Plush Keychain Blind Box

POPMART CRYBABY Vacation Mode On - Vinyl Plush Keychain Blind Box

$106.99

Portable Travel Potty for Kids, Outdoor Toilet, Foldable Car Seat Potty for Babies, Travel Urinal for Outdoors

Portable Travel Potty for Kids, Outdoor Toilet, Foldable Car Seat Potty for Babies, Travel Urinal for Outdoors

$29.90

Wen Zhengming Red Cliff & Tengwang Pavilion Copybook - 2-Volume Running Script Long Scroll for Calligraphy Practice

Wen Zhengming Red Cliff & Tengwang Pavilion Copybook - 2-Volume Running Script Long Scroll for Calligraphy Practice

$22.00

Commercial Food Warmer Cabinet, Double-Layer Display Unit for Western Restaurants and Burger Shops, Wholesale Two-Tier Heating Showcase

Commercial Food Warmer Cabinet, Double-Layer Display Unit for Western Restaurants and Burger Shops, Wholesale Two-Tier Heating Showcase

$2,527.00

Electromagnetic Pulse Valve Blow-Type Submerged Right-Angle Explosion-Proof Solenoid Valve

Electromagnetic Pulse Valve Blow-Type Submerged Right-Angle Explosion-Proof Solenoid Valve

$152.00

Pure Brass Backflow Incense Holder with Wooden Base, Incense Burner Stand for Sandalwood

Pure Brass Backflow Incense Holder with Wooden Base, Incense Burner Stand for Sandalwood

$4.17

Multi-Function Over-Toilet Freestanding Shelf - Bathroom Storage Rack for Sink Area and Behind-Toilet Space

Multi-Function Over-Toilet Freestanding Shelf - Bathroom Storage Rack for Sink Area and Behind-Toilet Space

$958.10

Catalytic Combustion Equipment RCO Activated Carbon Adsorption Desorption Integrated Machine Industrial Plastic Waste Gas Purification Treatment Device

Catalytic Combustion Equipment RCO Activated Carbon Adsorption Desorption Integrated Machine Industrial Plastic Waste Gas Purification Treatment Device

$4,400.00

RoHS Ten Hazardous Substance Alloy Analysis and Coating Thickness Gauge - EDXRF Environmental Testing Instrument

RoHS Ten Hazardous Substance Alloy Analysis and Coating Thickness Gauge - EDXRF Environmental Testing Instrument

$10,856.00

Outes Air Energy Water Heater for Home Heating, Inverter Floor Heating & Central AC All-in-One Unit

Outes Air Energy Water Heater for Home Heating, Inverter Floor Heating & Central AC All-in-One Unit

$18,000.00

2025 Limited Edition Colorful Mesh Tofu Bag - Ultra-Light Breathable Multi-Purpose Storage Pouch

2025 Limited Edition Colorful Mesh Tofu Bag - Ultra-Light Breathable Multi-Purpose Storage Pouch

$11.90

Liupintang Calligraphy Felt Mat – Traditional Chinese Style Cultural Creative Painted Desk Pad for Brush Writing, Practice, and Ink Painting

Liupintang Calligraphy Felt Mat – Traditional Chinese Style Cultural Creative Painted Desk Pad for Brush Writing, Practice, and Ink Painting

$19.30

Shengneng Commercial Air Source Heat Pump Host KFXRS-40â…¡

Shengneng Commercial Air Source Heat Pump Host KFXRS-40â…¡

$45,000.00

Yiyi Electric Pad Printing Ink Cups (150/175/300/380) - Magnetic Doctor Blade Ink Wells for Coding Machines

Yiyi Electric Pad Printing Ink Cups (150/175/300/380) - Magnetic Doctor Blade Ink Wells for Coding Machines

$68.00

ML-150 Standard Material Leveling Machine - Economical and Practical Model

ML-150 Standard Material Leveling Machine - Economical and Practical Model

$11,780.00

3-in-1 Multi-Function Paint Brush Washer with Palette Compartments for Art Students

3-in-1 Multi-Function Paint Brush Washer with Palette Compartments for Art Students

$5.02

Silicone Dental Retainer Case - Portable Storage Box for Orthodontic Aligners & Dentures

Silicone Dental Retainer Case - Portable Storage Box for Orthodontic Aligners & Dentures

$19.30

Natural Crystal Raw Stone Aroma Diffuser Ornament Rose Quartz Crushed Stone Rough Ore Home Flameless Aromatherapy Healing Gift

Natural Crystal Raw Stone Aroma Diffuser Ornament Rose Quartz Crushed Stone Rough Ore Home Flameless Aromatherapy Healing Gift

$3.90