Skip to main content
Home / Screws / Black 304 Stainless Steel Flat Head Cross Recessed Countersunk Self-Tapping Screws, Extended National Standard Fasteners M3 M4 M5-M8

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Finish Black Oxide Coated
Head Style Flat Head (Countersunk)
Drive Type Cross Recessed (Phillips)
Thread Type Self-Tapping
Available Sizes M3, M4, M5, M6, M8
Standard Extended National Standard
Corrosion Resistance High (Suitable for Indoor/Outdoor)
Application Metal, Plastic, and Wood Assembly
Package Content Assorted Kit (100 Pieces)

6 reviews

A

Anonymous

Mar 26, 2026

Rating: 5/5

Excellent corrosion resistance

I used these for an outdoor garden fixture. After three months of rain and sun, there is zero sign of rust. The black coating has held up remarkably well compared to other brands I've tried.

A

Anonymous

Mar 25, 2026

Rating: 4/5

Solid standard fasteners

Very reliable screws for general machinery maintenance. The flat head sits flush as expected. Only giving 4 stars because the packaging could be better organized by size.

A

Anonymous

Mar 15, 2026

Rating: 4/5

Good quality, slightly hard to find M8

Overall great fasteners. The M3 and M4 sizes were perfect for my electronics enclosure. The M8 size was a bit scarce in the kit I received, but the quality of the metal is top-notch.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Sharp threads make installation easy

The self-tapping feature works beautifully on aluminum sheets. I didn't need to pre-drill pilot holes for the smaller sizes, which saved me a lot of time during assembly.

A

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect for my DIY projects

These screws are exactly what I needed. The black finish looks sleek on my custom PC build, and the 304 stainless steel ensures they won't rust over time. The Phillips head grips well without stripping.

A

Anonymous

Mar 07, 2026

Rating: 5/5

Great value for money

You get a lot of high-quality screws for the price. The black aesthetic is consistent across all pieces, and they feel very sturdy. Will definitely buy again for future workshops.

5 FAQ

Q: Can these be used on hardwood?

A: Yes, these self-tapping screws can penetrate hardwood, but we strongly recommend drilling a pilot hole first to prevent the wood from splitting and to ensure a clean finish.

Q: Is the black coating prone to chipping?

A: The black oxide finish is durable for standard applications. However, like any coating, it can chip if subjected to extreme abrasion or impact during installation. Using the correct driver size minimizes this risk.

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

A: While 304 stainless steel offers good corrosion resistance, we recommend 316 stainless steel for direct, constant exposure to saltwater. These are excellent for general outdoor use but may not be ideal for harsh marine conditions.

Q: What driver size do I need for the M5 screws?

A: For the M5 Cross Recessed screws, a standard PH2 (Phillips #2) screwdriver bit is typically the correct size to ensure proper torque without stripping the head.

Q: Do you sell these in bulk quantities over 1000 pieces?

A: Yes, we offer bulk pricing for orders exceeding 1000 pieces. Please contact our sales department directly through the 'Contact Seller' button for a custom quote.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Tupai 3D Self-Adhesive Wall Stickers, Custom Acrylic Logo Advertising Letters for Signage, Background Walls, and Image Wall Decor

Tupai 3D Self-Adhesive Wall Stickers, Custom Acrylic Logo Advertising Letters for Signage, Background Walls, and Image Wall Decor

$8.50

Durable Replacement DEUBLIN 525/357 Water Inlet/Outlet Rotary Union for Curved Surface Printing and Cup Printing Machines

Durable Replacement DEUBLIN 525/357 Water Inlet/Outlet Rotary Union for Curved Surface Printing and Cup Printing Machines

$300.00

Detachable Large Water Barrel Rack for Mineral and Purified Water, Office Bottled Water Storage Stand with Wheels

Detachable Large Water Barrel Rack for Mineral and Purified Water, Office Bottled Water Storage Stand with Wheels

$136.00

Tea Packaging Gift Box - Empty Ceramic Tea Canister for Longjing, Green Tea, White Tea, Ripe Pu'er, Universal Packaging

Tea Packaging Gift Box - Empty Ceramic Tea Canister for Longjing, Green Tea, White Tea, Ripe Pu'er, Universal Packaging

$68.00

Ruke Floating Skimmer Machine for Sewage Treatment Plant Biochemical Tanks

Ruke Floating Skimmer Machine for Sewage Treatment Plant Biochemical Tanks

$12,064.00

Car Tire Stone Removal Tool Rock Picker Anti-Explosion Hook Stone Cleaner Car Hook Window Breaker Hammer

Car Tire Stone Removal Tool Rock Picker Anti-Explosion Hook Stone Cleaner Car Hook Window Breaker Hammer

$2.07

Negotiable Price: Siemens 10mA Leakage Circuit Breaker, 2P 16A Ground Fault Protection

Negotiable Price: Siemens 10mA Leakage Circuit Breaker, 2P 16A Ground Fault Protection

$130.00

Jingdezhen Ceramic Brush Washer Set, Blue and White Porcelain Calligraphy Ink Well and Pen Holder

Jingdezhen Ceramic Brush Washer Set, Blue and White Porcelain Calligraphy Ink Well and Pen Holder

$14.99

Beishanlang Outdoor Camping Foldable Lighting Stand Aluminum Alloy Portable Lamp Pole Bracket Camp Light Night Fishing Light

Beishanlang Outdoor Camping Foldable Lighting Stand Aluminum Alloy Portable Lamp Pole Bracket Camp Light Night Fishing Light

$49.00

Mobile Gas Cylinder Stand with Wheels - Plastic Base Tray for Propane Tanks and Water Buckets

Mobile Gas Cylinder Stand with Wheels - Plastic Base Tray for Propane Tanks and Water Buckets

$10.65

Fast Grocery Shopping Cart, Foldable Portable Home Trolley with Stair-Climbing Wheels, Lightweight Hand Truck for Seniors

Fast Grocery Shopping Cart, Foldable Portable Home Trolley with Stair-Climbing Wheels, Lightweight Hand Truck for Seniors

$299.06

Car Tire Stone Hook - Multi-Function Rust-Resistant Tool for Removing Stones from Tires

Car Tire Stone Hook - Multi-Function Rust-Resistant Tool for Removing Stones from Tires

$8.33

Zunjue 100% Cotton Watercolor Paper Mini Portable Pocket Sketchbook for Travel, 300g Cold Press Thickened Art Notebook for Gouache, Oil Pastel, and Colored Pencil

Zunjue 100% Cotton Watercolor Paper Mini Portable Pocket Sketchbook for Travel, 300g Cold Press Thickened Art Notebook for Gouache, Oil Pastel, and Colored Pencil

$3.32

Large Capacity Waterproof Phone Pouch for Outdoor Diving, Rafting, and Swimming - Touchscreen Compatible Waist Bag with Storage

Large Capacity Waterproof Phone Pouch for Outdoor Diving, Rafting, and Swimming - Touchscreen Compatible Waist Bag with Storage

$2.50

Custom Office Meeting Door Sign – Switchable 'Do Not Disturb' & 'Please Knock' Plate

Custom Office Meeting Door Sign – Switchable 'Do Not Disturb' & 'Please Knock' Plate

$5.00

Multi-Function Over-Toilet Storage Rack – No-Drill, Multi-Tier Floor Stand for Bathroom Laundry Gap

Multi-Function Over-Toilet Storage Rack – No-Drill, Multi-Tier Floor Stand for Bathroom Laundry Gap

$28.48

External Round Thread Welding Turning Tool, Threading Tool, Zhuzhou Alloy YT15 YG8 YW2 Lathe Tools, 20*25*30 Square

External Round Thread Welding Turning Tool, Threading Tool, Zhuzhou Alloy YT15 YG8 YW2 Lathe Tools, 20*25*30 Square

$17.00

Traditional Children's Rattle Drum, Classic Baby Hand-Shake Instrument, Plastic Toy for Newborn Boys and Girls

Traditional Children's Rattle Drum, Classic Baby Hand-Shake Instrument, Plastic Toy for Newborn Boys and Girls

$2.90

Ultra-Soft Dual-Tip Blending Stump Set for Oil Pastels & Sketching – Washable Smudge Tools for Shading and Detail Work

Ultra-Soft Dual-Tip Blending Stump Set for Oil Pastels & Sketching – Washable Smudge Tools for Shading and Detail Work

$3.39

Chengzhutang Foldable Water Bucket Chinese Painting Brush Washer Gouache Watercolor Paint Cleaning Pail Art Student Brush Basin Collapsible Cup Oil Painting Color Pigment Bucket

Chengzhutang Foldable Water Bucket Chinese Painting Brush Washer Gouache Watercolor Paint Cleaning Pail Art Student Brush Basin Collapsible Cup Oil Painting Color Pigment Bucket

$9.80

Meiao Dental Nobel Biocare Import Package - Swedish Dental Implants, Crowns, Abutments, and Dentures

Meiao Dental Nobel Biocare Import Package - Swedish Dental Implants, Crowns, Abutments, and Dentures

$15,888.00

Outdoor Waterproof ABS Plastic Case - Shockproof Moisture-Proof Storage Box with Cushioning for EDC Tools and Travel

Outdoor Waterproof ABS Plastic Case - Shockproof Moisture-Proof Storage Box with Cushioning for EDC Tools and Travel

$12.00

Natural Loofah Dish Cloth - Oil-Resistant, Non-Scratch Industrial Scouring Pad

Natural Loofah Dish Cloth - Oil-Resistant, Non-Scratch Industrial Scouring Pad

$3.43

Paper Blending Stumps for Sketching - Professional Art Supplies for Highlights, Shadows, Pastels, Oil Pastels, and Colored Pencils - Complete Set for Beginners and Artists

Paper Blending Stumps for Sketching - Professional Art Supplies for Highlights, Shadows, Pastels, Oil Pastels, and Colored Pencils - Complete Set for Beginners and Artists

$4.40

Aromatherapy Cup Candle Container DIY Crystal Diffuser Stone Cup Plaster Cement Cup Glass Vessel Demagnetizing Bowl

Aromatherapy Cup Candle Container DIY Crystal Diffuser Stone Cup Plaster Cement Cup Glass Vessel Demagnetizing Bowl

$4.68

American Chicano West Coast Style Neon Sign - Gothic Script Rap Shop Decor, Opening Gift, Living Room Light-Up Art

American Chicano West Coast Style Neon Sign - Gothic Script Rap Shop Decor, Opening Gift, Living Room Light-Up Art

$279.00

Data Cable Organizer, Desktop Fixed Charging Cable Storage, Solid Wood Phone Power Cord Clip, Anti-Tangle Adhesive Hook, No-Drill Computer Wire Winder, Wooden Edge Hanging Cable Collector

Data Cable Organizer, Desktop Fixed Charging Cable Storage, Solid Wood Phone Power Cord Clip, Anti-Tangle Adhesive Hook, No-Drill Computer Wire Winder, Wooden Edge Hanging Cable Collector

$35.00

Forest Wooden House Building Blocks - Educational Treehouse Toy for Boys and Girls, Board Game Trendy Blind Box

Forest Wooden House Building Blocks - Educational Treehouse Toy for Boys and Girls, Board Game Trendy Blind Box

$12.90

German B&W Safety Case for Folding Knives - EDC Tool Storage Box, Waterproof, Moisture-Proof, Shockproof, Models 1000-3000

German B&W Safety Case for Folding Knives - EDC Tool Storage Box, Waterproof, Moisture-Proof, Shockproof, Models 1000-3000

$245.00

Fuzao Kids 3D Printing Pen 2026 New Arrival Viral Pretend Play Toy for Girls Educational Gift for Ages 3+ Children's Day

Fuzao Kids 3D Printing Pen 2026 New Arrival Viral Pretend Play Toy for Girls Educational Gift for Ages 3+ Children's Day

$48.90