Attributes

Brand	-
Category	Standard Parts, Components & Industrial Consumables / Screws
Origin	-
Material	High-Carbon Steel with Zinc Plating
Head Type	External Hex with Integrated Washer
Drive Size	5/16 inch (8mm) Socket
Point Type	#3 Bird Tail Self-Drilling Tip
Thread Style	Coarse Thread for Metal Roofing
Finish	Galvanized Silver
Application	Color Steel Roofing and Cladding
Corrosion Resistance	Suitable for Outdoor Exposure
Packaging	Bulk Box of 500 Units
Compatibility	Works with Standard Impact Drivers

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Perfect for metal roofing projects

These screws drilled through the color steel sheets like butter. The hex head seated perfectly without stripping, and the built-in washer created a tight seal. Highly recommend for any roofing job.

Anonymous

Mar 25, 2026

Rating: 4/5

Great value, minor finish variation

Bought these for a large barn renovation. They perform excellently and save time since no pre-drilling is needed. One box had a few screws with slightly uneven galvanization, but it didn't affect performance.

Anonymous

Mar 19, 2026

Rating: 5/5

Professional grade quality

I use these daily on commercial sites. The bird tail tip is sharp and durable, handling thick gauge steel without breaking. The socket fit is precise, preventing cam-out even at high torque.

Anonymous

Mar 13, 2026

Rating: 5/5

Excellent corrosion resistance

Installed these on a coastal property six months ago. Despite the salt air, there is no sign of rust yet. The galvanized coating seems very robust compared to other brands I've tried.

Anonymous

Mar 03, 2026

Rating: 4/5

Solid fasteners

Good penetration power and the flange distributes pressure well. I deducted one star because the packaging was a bit damaged upon arrival, though the screws inside were fine.

Anonymous

Mar 01, 2026

Rating: 5/5

Saved me hours of work

As a homeowner fixing my shed roof, these were a lifesaver. No need to switch bits or pre-drill holes. They went in straight and held tight against strong winds.

5 FAQ

Q: Do these come with EPDM washers for waterproofing?

A: This specific model features an integrated metal flange washer. For enhanced waterproofing, we recommend using a separate sealant or checking our product line for variants that include bonded EPDM rubber washers.

Q: How many screws are included in one standard box?

A: Our standard bulk packaging contains 500 screws per box. We also offer larger pallet quantities for commercial contractors upon request.

Q: What thickness of metal can these screws drill through without a pilot hole?

A: These #3 point self-drilling screws are designed to penetrate up to 6mm (approx. 1/4 inch) of steel without pre-drilling, making them ideal for most color steel roofing applications.

Q: What size socket driver do I need for these?

A: You will need a 5/16 inch (8mm) magnetic socket driver. This size fits the external hex head securely to prevent slipping during installation.

Q: Are these suitable for attaching wood to metal?

A: While they can penetrate wood, these are optimized for metal-to-metal connections. For wood-to-metal, you might prefer a screw with a finer thread pitch to ensure better grip in the timber.

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