Skip to main content
Home / Screws / 304 Stainless Steel Pan Head Round Head Semi-Round Head Socket Cap Screw Bolt M2 M3 M4 M5-M12

Attributes

Brand -
Category Standard Parts, Components & Industrial Consumables / Screws
Origin -
Material 304 Stainless Steel
Head Style Socket Cap (Allen)
Drive Type Hex Socket
Thread Standard Metric (ISO)
Available Sizes M2, M3, M4, M5, M6, M8, M10, M12
Finish Polished Silver
Corrosion Resistance High (Suitable for damp environments)
Tensile Strength Standard Grade A2-70
Package Contents Assorted Kit (100 pieces)
Application Machinery, Electronics, Furniture Assembly

6 reviews

A

Anonymous

Mar 31, 2026

Rating: 5/5

Professional grade quality

As a hobbyist machinist, I am picky about fasteners. These have consistent head heights and precise threads. Will buy again.

A

Anonymous

Mar 28, 2026

Rating: 4/5

Good value assortment

Nice variety of sizes in one pack. I used the M4 and M5 for assembling a computer stand. Only wish it came with a small Allen key.

A

Anonymous

Mar 26, 2026

Rating: 5/5

Perfect fit for my CNC project

These screws are exactly what I needed. The threading is clean, and the hex socket doesn't strip easily. Great quality stainless steel.

A

Anonymous

Mar 23, 2026

Rating: 4/5

Solid hardware

Very sturdy bolts. The polish is nice and smooth. Took off one star because the packaging was a bit flimsy, but the screws themselves are great.

A

Anonymous

Mar 17, 2026

Rating: 5/5

Saved my repair job

Needed specific M3 lengths that local stores didn't carry. This kit had everything. Fast shipping and great product.

A

Anonymous

Mar 08, 2026

Rating: 5/5

Excellent corrosion resistance

I used these for an outdoor garden fixture. After three months of rain, there is absolutely no rust. Highly recommended for outdoor use.

5 FAQ

Q: Is the head fully threaded or partially threaded?

A: These are fully threaded socket cap screws, providing maximum grip length for your applications.

Q: What is the length range included in this kit?

A: This specific assortment includes lengths ranging from 4mm to 20mm depending on the diameter selected. Please check the detailed size chart in the images.

Q: Do you sell replacement keys if I lose mine?

A: We do not sell the keys separately, but standard metric Allen keys available at any hardware store will fit these screws perfectly.

Q: Can these be used in saltwater environments?

A: While 304 stainless steel offers good corrosion resistance, for constant submersion in saltwater, we recommend 316 stainless steel for better protection.

Q: Are these screws compatible with imperial tools?

A: No, these are metric screws (M2-M12). You will need a metric hex key set to install them properly.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag

Foldable Steel Tire Stone Removal Hook - Multi-Tool for Tire Repair, Stone Picking, and Emergency Window Breaking with Storage Bag

$11.70

Integrated Catalytic Combustion Unit RCO Furnace - Exhaust Gas Treatment System with Activated Carbon Adsorption-Desorption and Catalytic Combustion

Integrated Catalytic Combustion Unit RCO Furnace - Exhaust Gas Treatment System with Activated Carbon Adsorption-Desorption and Catalytic Combustion

$231,249.00

Universal Waterproof and Sunproof Cover for E-Bike Charger with Outdoor Storage Box

Universal Waterproof and Sunproof Cover for E-Bike Charger with Outdoor Storage Box

$11.85

Baohong Paper Brick Watercolor Paper Pad, Medium/Coarse Texture, Square/Round Shapes for Painting, Sketching, and Cotton Pulp Practice

Baohong Paper Brick Watercolor Paper Pad, Medium/Coarse Texture, Square/Round Shapes for Painting, Sketching, and Cotton Pulp Practice

$28.00

Commercial Food Warmer Cabinet for Pies, Youtiao, Burgers, Egg Tarts, and Fried Chicken, Heating and Temperature-Controlled Display Case

Commercial Food Warmer Cabinet for Pies, Youtiao, Burgers, Egg Tarts, and Fried Chicken, Heating and Temperature-Controlled Display Case

$977.00

Masking Tape Spray Paint Shielding Paper for Art Students and Sketching - Non-bleeding, Residue-free, Hand-tearable, Shoe-safe

Masking Tape Spray Paint Shielding Paper for Art Students and Sketching - Non-bleeding, Residue-free, Hand-tearable, Shoe-safe

$1.00

Electric Scooter and Motorcycle Hook - Multi-Functional Storage Hanger for Delivery Bikes and Cargo Boxes

Electric Scooter and Motorcycle Hook - Multi-Functional Storage Hanger for Delivery Bikes and Cargo Boxes

$2.50

Huirui 420AB Fast-Drying Glue for Silicone - Bonds ABS, Stainless Steel, TPE, Rubber; High-Strength Instant Adhesive for Difficult Materials

Huirui 420AB Fast-Drying Glue for Silicone - Bonds ABS, Stainless Steel, TPE, Rubber; High-Strength Instant Adhesive for Difficult Materials

$36.00

Color Proofing Instrument Ink Mixing Tool Sample Making Machine

Color Proofing Instrument Ink Mixing Tool Sample Making Machine

$1,860.00

Variable Frequency Drive 0.75kW 2.6A Three-Phase 380V

Variable Frequency Drive 0.75kW 2.6A Three-Phase 380V

$1,430.00

2026 Spring PEP New Edition Primary English Grade 3 Volume 2 Four-Line Three-Grid Word Cards for Teachers, Open Class Competition Creative Blackboard Design, Teaching Contest Blackboard Strips and Teaching Aids

2026 Spring PEP New Edition Primary English Grade 3 Volume 2 Four-Line Three-Grid Word Cards for Teachers, Open Class Competition Creative Blackboard Design, Teaching Contest Blackboard Strips and Teaching Aids

$11.30

Cold Brew Yogurt Fermentation Equipment - Manual Old-Style Yogurt Processing and Filling Line

Cold Brew Yogurt Fermentation Equipment - Manual Old-Style Yogurt Processing and Filling Line

$113,050.00

Electric Spray Painting Pen Set for Babies and Toddlers, Non-Toxic Washable Watercolor Markers, Drawing Tool Kit Toy

Electric Spray Painting Pen Set for Babies and Toddlers, Non-Toxic Washable Watercolor Markers, Drawing Tool Kit Toy

$49.50

[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting

[Buy 2 Get 10% Off] Painted Double-Layer Wool Felt Mat for Calligraphy and Painting

$7.48

Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot and BBQ Odor Removal

Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Living Room Hot Pot and BBQ Odor Removal

$41.00

Office and Home Computer Cable Management Sleeve - Desktop Data Cord Organizer and PC Wire Collector

Office and Home Computer Cable Management Sleeve - Desktop Data Cord Organizer and PC Wire Collector

$6.50

Linear Bearing

Linear Bearing

$75.47

Thickened Aluminum Alloy Stainless Steel Floor Wire Raceway - Surface-Mounted Cable Cover Protector, Anti-Crush, Self-Adhesive Invisible Design

Thickened Aluminum Alloy Stainless Steel Floor Wire Raceway - Surface-Mounted Cable Cover Protector, Anti-Crush, Self-Adhesive Invisible Design

$2.13

Kids Foam Stamp Brushes - Mushroom-Tipped Painting Set for Kindergarten Art and Graffiti Projects

Kids Foam Stamp Brushes - Mushroom-Tipped Painting Set for Kindergarten Art and Graffiti Projects

$2.38

Heisidike HZL-32 Portable Stone Removal Hook for Car Tire Tread Cleaning

Heisidike HZL-32 Portable Stone Removal Hook for Car Tire Tread Cleaning

$9.28

Bixilage Cheese Processing Equipment – Curd Fermentation Machine for Stretchy Hand-Pulled Cheese Production Line

Bixilage Cheese Processing Equipment – Curd Fermentation Machine for Stretchy Hand-Pulled Cheese Production Line

$67,900.00

Essential Oil Soap Stamping Machine DIY Stamp Maker Semi-Auto Pneumatic Stampler Small Handmade Soap Equipment

Essential Oil Soap Stamping Machine DIY Stamp Maker Semi-Auto Pneumatic Stampler Small Handmade Soap Equipment

$2,173.00

Inverted Barrel Water Stand - Simple U-Shaped Thickened Holder for Purified Water Buckets with Dispenser Outlet

Inverted Barrel Water Stand - Simple U-Shaped Thickened Holder for Purified Water Buckets with Dispenser Outlet

$21.00

Qingling Pickup 2.8T Diesel Isuzu 4JB1-T1 Engine Turbocharger Pump Assembly

Qingling Pickup 2.8T Diesel Isuzu 4JB1-T1 Engine Turbocharger Pump Assembly

$1,502.00

Juli JL-499 Heat Resistant up to 150°C Instant Adhesive High Performance Low Whitening Transparent High-Temperature Fast-Drying Glue

Juli JL-499 Heat Resistant up to 150°C Instant Adhesive High Performance Low Whitening Transparent High-Temperature Fast-Drying Glue

$90.30

Stainless Steel Buffet Warmer with Hydraulic Lift - Commercial Electric Heating Chafing Dish

Stainless Steel Buffet Warmer with Hydraulic Lift - Commercial Electric Heating Chafing Dish

$882.00

Zhaobei New Felt Calligraphy Mat Anti-Pilling Painting Felt Chinese Painting Cloth Brush Character Calligraphy Felt Pad

Zhaobei New Felt Calligraphy Mat Anti-Pilling Painting Felt Chinese Painting Cloth Brush Character Calligraphy Felt Pad

$29.70

Fruit Picking Bucket with Shoulder Strap, Manual Fertilizer Spreader, Durable Rubber Harvest Container for Seeds and Chemicals

Fruit Picking Bucket with Shoulder Strap, Manual Fertilizer Spreader, Durable Rubber Harvest Container for Seeds and Chemicals

$26.57

Baohong Artist Grade Watercolor Pad - 100% Cotton Pulp, 300gsm, Glued on Four Sides, Available in 16K, 8K, 4K with Cold Press or Hot Press Texture

Baohong Artist Grade Watercolor Pad - 100% Cotton Pulp, 300gsm, Glued on Four Sides, Available in 16K, 8K, 4K with Cold Press or Hot Press Texture

$42.00

Commercial Brush Peeling Machine for Sweet Potatoes, Ginger, Taro, Mustard Greens, and Kohlrabi

Commercial Brush Peeling Machine for Sweet Potatoes, Ginger, Taro, Mustard Greens, and Kohlrabi

$15.90