Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	Carbon Steel with Zinc Plating
Head Style	Hex Washer Head (Flange)
Drive Type	External Hex Socket
Point Type	Self-Drilling Drill Point
Thread Type	Coarse Self-Tapping Thread
Finish	Galvanized Corrosion Resistance
Application	Color Steel Roofing and Metal Framing
Pack Quantity	Bulk Box (Quantity Varies by Selection)
Compatibility	Suitable for Sheet Metal up to 5mm
Warranty	Manufacturer Quality Guarantee

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Solid choice

Great screws overall. They are sharp and drive straight. Just make sure you have a powerful enough drill for thicker gauges.

Anonymous

Mar 28, 2026

Rating: 5/5

Professional grade performance

I've used many brands for commercial jobs. These perform consistently without breaking tips. The flange provides excellent sealing pressure.

Anonymous

Mar 18, 2026

Rating: 5/5

Easy to use for beginners

I was worried about drilling into steel myself, but these made it very easy. No pre-drilling needed. Highly recommend for home projects.

Anonymous

Mar 11, 2026

Rating: 5/5

Perfect for roofing projects

These screws drilled through the metal sheets like butter. The hex head grips well and doesn't strip easily. Great value for the quantity provided.

Anonymous

Mar 09, 2026

Rating: 4/5

Good quality, fast shipping

Used these for a shed roof. They hold tight and the galvanization looks solid. One star off because the box was slightly dented on arrival, but the screws were fine.

Anonymous

Mar 09, 2026

Rating: 5/5

Excellent corrosion resistance

Installed these six months ago on an outdoor structure. No signs of rust yet despite heavy rain. Very satisfied with the durability.

5 FAQ

Q: What size hex bit do I need for these screws?

A: Most standard sizes in this line require a 5/16 inch or 8mm hex bit, but please check the specific size selection you ordered for exact requirements.

Q: Are these suitable for outdoor use in coastal areas?

A: They feature galvanized coating which offers good corrosion resistance. However, for highly corrosive coastal environments, we recommend our stainless steel variants for maximum longevity.

Q: Do you offer bulk discounts for orders over 50 boxes?

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

Q: Can these be used on wood frames?

A: While they can penetrate wood, they are specifically designed for metal-to-metal or metal-to-wood applications where self-drilling capability is needed. For pure wood-to-wood, standard wood screws are recommended.

Q: What is the maximum thickness of metal these can drill through?

A: Depending on the specific length and point type selected, most of these screws can self-drill through carbon steel up to 5mm thick without pre-drilling.

Explore your interests

Honeywell Fresh Air Filter - ERF150/ERF250/ERF350C0N/ERF150D/250D/350D Replacement Filters

$54.00

Chint Claw Hammer, One-Piece Formed Iron Hammer, Tool Nail Hammer, Mini Household Small Hammer Specialized for Woodworking

$5.00

Aluminum Alloy Diaphragm Coupling High Rigidity High Torque SCPS DBJ SCPW Servo Screw Motor Coupling

$28.80

Mold Support Pins SKD61; Three-stage Support Rods; Two-stage Mold Ejector Pins; Heat-resistant Stepped Push Rods with Head; Secondary Support Pins

$5.80

Iron Galvanized Spring Washer Split Spring Washer Metal Elastic Shim M3 M4 M5 M6 M8 M10 M12 M14 M16 M20

$3.60

Bronze Rings Bronze Bushings Bronze Washers and Gaskets Bronze Sleeves Lathe Machined 2.5/3/4/5/6/8/10/12 Customizable

$1.50

Beech Wood Two-Piece Cleaver Handle Accessories, Household Fixed Guard, Handmade Knife Rivet Handle Replacement, Solid Wood Handle

$3.51

Xingchen Oil-Water Separator Filter AC2010-02D, Automatic Drain Two-Component Unit AC3010-03/AC4010

$8.00

Universal Joint Cross Bearing - Sizes 20x45, 22x55, 20x55

$19.00

Figure-8 Coupling GB Encoder Shaft Connector Polyurethane TPU Flexible Plastic Elastic Shaft Sleeve

$13.00

Heavy-Duty Double Steel Wire Tiger Clamp Galvanized Strong Hose Clamp for Pipes Hoses Water Oil Tubes Stainless Steel Band Clamp

$2.60

European Standard Aluminum Profile T-Slot Nuts, Carbon Steel Square Nuts for Types 20, 30, 40, 45 (M3/M4/M5)

$0.55

Custom Non-standard Parts

$650.00

GA/GB Precision Guide Bushing Inner Small Guide Post Stamping Hardware Mold Wear-Resistant 8 10 12 14 16 18 20 25

$3.20

Aotian Extreme 24-25 BURTON STEP ON GENESIS Men's Dual Highback Step-On Snowboard Bindings

$2,288.50

Cungang Micro Ball Guide Pillar and Sleeve, Precision Micro Ball Bushing Guide Assembly, Bronze Bushing, FA Automation Bearing

$60.00

Set Screws Grade 12.9 Concave End Hex Socket Set Screws, Headless Grub Screws, Machine Screws, Tip Screws m3 m4 m5 m6

$2.49

CNC Lathe 0640 Chuck Saw 4-Cut Non-Quenched Round Through Hole 3-46 Internal Thread M48x1.5 Spindle

$20.00

304 Stainless Steel Extension Spring with S-Hook, Strong Curved Hook, Various Sizes and Lengths, Customizable for Oven Door Pull Springs

$1.00

Micro HK Needle Roller Bearing Assortment, Inner Diameters 3, 4, 5, 6, 7, 8, 9, 10, 12, 14, 15, 16, 17-40mm

$0.58

In Stock Kaisite Solenoid Valve DG4V-5-2C-FW-H-60H 0C 6C 33C 8C 7C

$820.00

Sliding Bar Socket Extension Bar Power Bar Sliding Bar Large 1/2 Medium 3/8 Small 1/4 Fly Rail Tube Wrench Extension Bar Sliding Rod Tool

$3.25

Rotary Worktable Vertical and Horizontal Dual-Use Indexing Plate High-Precision CNC Milling Machine Rotary Table Indexing Head TS TSL

$2,155.00

Flat Pressure Thrust Ball Bearings 51200 51201 51202 51203 51204 51205 51206

$4.60

M20 National Standard Turnbuckle, Malleable Iron Screw Rigging, Spiral Buckle, Galvanized Flower Lantern Bolt, Utility Pole Wire Rope Tensioner

$10.80

M6 M8 M10 M12 M14 M16 Stainless Steel 304 Round Head Rivets GB867 Knock-in Mushroom Head Solid Sign Rivets

$2.43

Hammer Drill Adapter Chuck: Universal Connector for Rotary Hammers and Hand Drills, Compatible with Round Shank (Two Grooves) and Square Shank (Four Grooves)

$5.04

Precision Ball Guide Pillar and Bushing, Rolling Types 20 22 25 28 32 38 SRP TRP SGP Mold Accessories

$28.00

Wear-Resistant Double-Sided Dustproof Wire Grommet Round Cable Bushing Ring for Chassis Rubber Seal

$20.80

400kg 600kg 800kg High-Power Electric Vacuum Suction Cup, Construction Site Building Glass Handling Vacuum Lifting Machine

$5,664.00

TWSNS Taizhuan Shannais Oil-Water Separator Filter Self-Adjusting Pressure Valve Air Source Treatment Two-Piece Unit Pressure Reducing Valve

$11.00

Heavy-Duty Universal Caster Wheels, Silent Load-Bearing Rollers with Brakes, Directional Swivel Wheels for Trolleys, Furniture Moving Base

$2.13

Heavy-Duty Swivel Caster Polyurethane 4568 Inch Push Cart Plate Cart Cargo Wheel Wear-Resistant Steering Wheel Brake Wheel

$4.27

Galvanized Iron Thickened Split Lock Washer with Wide Flat Washer, Elastic Metal Shim M5 M6 M8 M10 M20

$1.47

Sliding Bar 1 Inch Heavy Duty 1/2 Sliding Bar Socket Extension Bar 1/4 3/8 4 Extended Bar Long Adapter Connector

$9.95

Air Source Processor Two-Piece Unit (BFR2000, BFC2000/3000/4000), Pressure Regulating Oil-Water Separator

$45.00

High-Strength Fiberboard Screws Ecological Board Hardened Long Color Zinc Self-Tapping Woodworking Wall Board Drywall Screws Cabinet M3 M5

$6.37

Composite Washer External Hex Drill Tail Self-Tapping Screws for Color Steel Roofing Tiles, National Standard with Washer

$24.00

Custom Helical Gears for Reducers - Non-Standard Cylindrical Spiral Gears with Left/Right Hand Rotation, Module 1-20, 45-Degree Helix Angle

$10.00

Hammer Nut Hammer Head Cap Furniture Two-in-One Connector Cylinder Hammer Embedded Hex Socket Screw Cap M6 M8

$3.00