Skip to main content
Home / Screws / M2 M3 M4 M5 M6 M8 Stainless Steel 304 Ultra-Thin Head CM Large Flat Head Flat C Head Extremely Low Profile Socket Head Cap Screws

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material Stainless Steel 304
Head Style Ultra-Thin Flat Head (C-Head)
Drive Type Socket (Allen/Hex)
Available Sizes M2, M3, M4, M5, M6, M8
Thread Pitch Standard Coarse Metric
Finish Polished Silver
Profile Height Extremely Low Profile
Application Precision Electronics and Machinery
Corrosion Resistance High (Indoor and Mild Outdoor)
Package Content Assorted Kit with Storage Case

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 3/5

Sizes run slightly small

The quality is good, but I noticed the M5 screws were a bit tight in standard M5 tapped holes. Had to tap the holes out slightly. Otherwise, they work well.

A

Anonymous

Mar 24, 2026

Rating: 5/5

Perfect for tight spaces

These screws are exactly what I needed for my custom keyboard build. The ultra-thin head allows them to sit completely flush without protruding, which was critical for the case clearance.

A

Anonymous

Mar 22, 2026

Rating: 5/5

Great assortment kit

Having all these sizes in one box is super convenient. The organizer case keeps them sorted, and the variety covers almost all my repair needs for laptops and cameras.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Essential for drone frames

Used the M3 and M4 sizes for my racing drone frame. They are incredibly lightweight yet strong enough to hold the motor mounts securely. Highly recommended for RC applications.

A

Anonymous

Mar 14, 2026

Rating: 4/5

Good quality steel

The 304 stainless steel feels durable and hasn't shown any signs of rust after a few months in my workshop. The socket depth is adequate, though you need a precise hex key to avoid stripping.

A

Anonymous

Mar 14, 2026

Rating: 5/5

Clean aesthetic finish

I use these for visible hardware on modern furniture projects. The polished finish looks very premium, and the low profile keeps the design sleek and minimal.

5 FAQ

Q: Is the thread full length or partial?

A: These screws feature full threading from just under the head to the tip, maximizing grip strength in thinner materials.

Q: Do these come with a hex key included?

A: This specific bulk kit does not include hex keys. It contains only the screws and the storage organizer. Keys must be purchased separately.

Q: Are these screws compatible with aluminum threads?

A: Yes, these stainless steel screws are commonly used with aluminum components. However, we recommend using an anti-seize compound to prevent galling between the dissimilar metals.

Q: Can these be used outdoors in rainy conditions?

A: While 304 Stainless Steel offers good corrosion resistance, it is best suited for indoor or sheltered outdoor use. For constant exposure to saltwater or harsh chemicals, 316 grade would be more appropriate.

Q: What is the exact height of the M4 head?

A: The M4 ultra-thin flat head has a profile height of approximately 1.5mm, making it significantly lower than standard socket cap screws.

Explore your interests

All Categories
Best Seller (30)
New List (30)
Large Bucket 502 Glue, Strong Instant Adhesive, Gold Material 502 Dry Glue for Leather, Metal, Furniture, and Plastic Bonding by Manufacturer

Large Bucket 502 Glue, Strong Instant Adhesive, Gold Material 502 Dry Glue for Leather, Metal, Furniture, and Plastic Bonding by Manufacturer

$1,893.00

Rectangular Plastic Vegetable Planter for Balcony - Durable Home Gardening Pot

Rectangular Plastic Vegetable Planter for Balcony - Durable Home Gardening Pot

$12.90

Chinese Painting Line Drawing Copybook, Gongbi Sketch Template, Large-Scale Tracing Album, Ancient Style Brush Control and Line Practice Book

Chinese Painting Line Drawing Copybook, Gongbi Sketch Template, Large-Scale Tracing Album, Ancient Style Brush Control and Line Practice Book

$7.48

German Continental Tires 225/45R17 Run-Flat, 19-Inch Original Authentic with Full Tread Patterns

German Continental Tires 225/45R17 Run-Flat, 19-Inch Original Authentic with Full Tread Patterns

$380.00

Dynamic Sheet Music Simplified Notation Accompaniment for Electric Wind Instrument Saxophone Hulusi Ocarina Flute Bamboo Flute

Dynamic Sheet Music Simplified Notation Accompaniment for Electric Wind Instrument Saxophone Hulusi Ocarina Flute Bamboo Flute

$10.00

LL Industrial Lint-free Wiping Paper - Oil and Water Absorbent Non-woven Fabric (White/Blue Large Roll)

LL Industrial Lint-free Wiping Paper - Oil and Water Absorbent Non-woven Fabric (White/Blue Large Roll)

$185.82

Continental Quiet Used Car Tires 225/235/245/255/265-35/40/45/50 R17/18/19/20/21/22/23

Continental Quiet Used Car Tires 225/235/245/255/265-35/40/45/50 R17/18/19/20/21/22/23

$284.00

Negotiable Price: Siemens Load Cell 7mh4106-5ec11, Brand New Unused, Contact for Price Negotiation

Negotiable Price: Siemens Load Cell 7mh4106-5ec11, Brand New Unused, Contact for Price Negotiation

$1,332.00

Premium Over-Toilet Storage Organizer, Wall-Mounted Bathroom Shelf, No Drilling Required, Multi-Function Toilet Rack

Premium Over-Toilet Storage Organizer, Wall-Mounted Bathroom Shelf, No Drilling Required, Multi-Function Toilet Rack

$31.76

Model 2000 Large Commercial Vegetable Cutter for Slicing, Dicing, and Cutting Leafy Greens and Kimchi

Model 2000 Large Commercial Vegetable Cutter for Slicing, Dicing, and Cutting Leafy Greens and Kimchi

$11,000.00

Aromatherapy Candle Tool Set - Includes Igniter, Snuffer, Wick Trimmer, Flame Extinguisher Cover, and Rotating Carousel Ornament

Aromatherapy Candle Tool Set - Includes Igniter, Snuffer, Wick Trimmer, Flame Extinguisher Cover, and Rotating Carousel Ornament

$2.55

onlycook 304 Stainless Steel Kitchen Rack with Narrow Edge for Sink, Dishcloth Drainer, and Sponge Basket

onlycook 304 Stainless Steel Kitchen Rack with Narrow Edge for Sink, Dishcloth Drainer, and Sponge Basket

$36.50

7-Piece Square Succulent Pot Set with Trays - Durable Plastic Colorful Root-Control Planters

7-Piece Square Succulent Pot Set with Trays - Durable Plastic Colorful Root-Control Planters

$75.50

Minimalist Japanese Style Kitchen Sponge Brush Dish Soap Drain Rack Air-Dry Cloth Rack Sink Organizer Box

Minimalist Japanese Style Kitchen Sponge Brush Dish Soap Drain Rack Air-Dry Cloth Rack Sink Organizer Box

$21.00

PVC Cable Cover Speed Bump Style Wire Protector for Indoor Cables and Pipes

PVC Cable Cover Speed Bump Style Wire Protector for Indoor Cables and Pipes

$9.10

Spiegel BGF-161 Portable Tire Stone Removal Hook - Multi-function Tool for Cleaning Car Tire Treads

Spiegel BGF-161 Portable Tire Stone Removal Hook - Multi-function Tool for Cleaning Car Tire Treads

$7.84

7A Natural Amethyst Purple Rabbit Hair Loose Beads for Women's DIY Bracelets and Snowflake Necklaces

7A Natural Amethyst Purple Rabbit Hair Loose Beads for Women's DIY Bracelets and Snowflake Necklaces

$3.83

DIY Handmade Soap Silicone Mold, Essential Oil Soap, Creative Gift Soap Base and Aromatherapy Materials, Love Forever Design

DIY Handmade Soap Silicone Mold, Essential Oil Soap, Creative Gift Soap Base and Aromatherapy Materials, Love Forever Design

$12.90

Flameless Aromatherapy Diffuser with Essential Oils, Dried Flowers, and Preserved Flower Decor

Flameless Aromatherapy Diffuser with Essential Oils, Dried Flowers, and Preserved Flower Decor

$13.60

DOUBLECOIN 7.00R16LT-14 (RSS2) All-Steel Radial Truck Tire - Economical and Wear-Resistant

DOUBLECOIN 7.00R16LT-14 (RSS2) All-Steel Radial Truck Tire - Economical and Wear-Resistant

$1,375.00

Tactical Laser Flashlight, Super Bright Rechargeable Mini Portable Light for Outdoor Long-Range Use, Home Multi-Function Zoom

Tactical Laser Flashlight, Super Bright Rechargeable Mini Portable Light for Outdoor Long-Range Use, Home Multi-Function Zoom

$339.22

MOOCAT [Polaroid Style] Hand-drawn Blank Irregular Wood Pulp Fine-grain Paper for Cyanotype, Street Vending, and Art Projects

MOOCAT [Polaroid Style] Hand-drawn Blank Irregular Wood Pulp Fine-grain Paper for Cyanotype, Street Vending, and Art Projects

$11.90

New Pearl Mini Watercolor Solid Set – Portable Travel Sketchbook & Palette Kit for Students, 12 Colors with Magnetic Transparent Case

New Pearl Mini Watercolor Solid Set – Portable Travel Sketchbook & Palette Kit for Students, 12 Colors with Magnetic Transparent Case

$5.78

Natural Cream-Body Green Rutilated Quartz Loose Beads - DIY Handmade Beading Accessories including Spacer Beads and Multi-Gem Bracelet Components

Natural Cream-Body Green Rutilated Quartz Loose Beads - DIY Handmade Beading Accessories including Spacer Beads and Multi-Gem Bracelet Components

$5.25

Fresh Milk Beverage Production Equipment – Small Pasteurization Tank & Fermented Liquid Yogurt Tank

Fresh Milk Beverage Production Equipment – Small Pasteurization Tank & Fermented Liquid Yogurt Tank

$6,580.00

Mold Mirror Polishing Cloth - Removes Material Marks, Available in Red, Yellow, White; Self-Adhesive Velvet for High-Gloss Mirror Finishing

Mold Mirror Polishing Cloth - Removes Material Marks, Available in Red, Yellow, White; Self-Adhesive Velvet for High-Gloss Mirror Finishing

$21.60

High Borosilicate Glass Cup, DIY Scented Candle Transparent Round Cup, Soy Wax Jelly Cup, Wax Molding Empty Container

High Borosilicate Glass Cup, DIY Scented Candle Transparent Round Cup, Soy Wax Jelly Cup, Wax Molding Empty Container

$2.38

Natural Aquamarine Black Flash Loose Beads for DIY Handmade Jewelry, Stringing Beads, and Round Beads

Natural Aquamarine Black Flash Loose Beads for DIY Handmade Jewelry, Stringing Beads, and Round Beads

$0.88

Touchmark Watercolor Sketchbook for Acrylic Markers and Colored Pencils, Mini Portable Pocket Painting Book for Children and Outdoor Sketching

Touchmark Watercolor Sketchbook for Acrylic Markers and Colored Pencils, Mini Portable Pocket Painting Book for Children and Outdoor Sketching

$6.74

Kunzite Loose Beads Donghai Crystal Agate Chalcedony Jade Gemstone Bracelet Pendant Single Bead Cat's Eye Accessories

Kunzite Loose Beads Donghai Crystal Agate Chalcedony Jade Gemstone Bracelet Pendant Single Bead Cat's Eye Accessories

$6.72