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Steel Hex Head Self-Drilling Roofing Tek Screws with Rubber Washers Stitch Screw 1 Point

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Jiaxing Unitek Machinery Technology Co.,Ltd.

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Steel Hex Head Self-Drilling Roofing Tek Screws with Rubber Washers Stitch Screw 1 Point

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Model Number :	*1/4-147/8",1#**
MOQ :	10000pcs
Supply Ability :	10 Ton/Tons per Day
Price :	$0.02/pieces >=10000 pieces

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Steel Hex Head Self-Drilling Roofing Tek Screws with Rubber Washers Stitch Screw 1 Point

Product Description

SUS410 Flange Hex Head Self Drilling Screw 1/4-14*7/8",1#, Technik coating

TEK Stainless Steel 410 Series Products. products through special heat treatment, screw surface hardness up to more than HV750, core hardness between HV350 - HV450, whether it is surface hardness or core hardness are more than carbon steel screws, and its reasonable hardness ladder from the surface to the core to ensure the ideal combination of strength and toughness.

SUS410 is martensitic stainless steel, its molding performance is good, can be heat treated; With high hardness, high strength, high temperature resistance, suitable for outdoor rain environment and corrosive environment; Although there will be red rust, but its corrosion rate is 0.01mm/ year, only 1/100 of ordinary carbon steel, even if the surface of the red rust, as long as gently wipe or polish, the surface will restore the inherent metallic luster.

' TECHNIK ' Coating

The product's surface coating is treated by zinc alloy coating, conforming to AS3566.2-2002 anticorrosion technology standard, metallographic section micro density 8 level requirements, ensuring coating adhesion force. Bottom coated zinc alloy, 360 degree barrel plating. Surface coated aluminum epoxy polymer.

1. Class 3 protection grade: The zinc content of coating 75-80%, the other elements are 20-25%, coating thickness is more than 25µ , salt spray test can reach more than 1000H without red rust, acid rain by more than 15 cycles.

2. Class 2 protection grade: The zinc content of coating 100%, coating thickness of 12-19µ , salt spray test can reach more than 240H without red rust.

High corrosion resistance-1000 hours without red rust

Coating			Rustproof Structure
1st layer	Metalic zine layer	The steel/iron substrate is protected from corrosion by the self-sacrificial galvanic effect of zinc coating.
2nd layer	Chemical conversion coating layer	Rustproof performance is improved, as the chemical conversion inactivates the zinc plated surface and attributes to tight adhesion between chemically converted layer and paint-layer
3rd layer	Baked ceramic surface coating layer	Instrusion of corrosive factors are intercepted by the strong paint film made of ceramic materials.

Super corrosion resistance 2000 hour salt spray without red rust

High corrosion resistance	Salt spray test for more than 2000 hours
No hydrogen brittleness	The base material is stainless steel, the treatment process has no pickling, millisecond. Risk of hydrogen embrittlement
Environmental protection	Do not contain harmful substances, such as chromic acid, lead, cadmium.
Subzero treatment	Low temperature 200℃ process will not result in a material change
Drug resistance	Alkali resistance, uv resistance, strong acid rain.
Weather resistance	-60℃-550℃

Product Application

Customization

Item Name:	Self Drilling Screw
Custom Material:	Stainless Steel (304, 305, 316, 410, 430) Carbon Steel (10B21, 1022, 435)
Custom Head Type:	Hex head, Flat head, Pan head, Cup head, Wafer head, Oval head, Fillister head, Binding head, Double countersunk head, Countersunk head, Round head, Button head, Round washer head, Wafer head with washer, Hex flange head, Hex washer head, Bugle head, Truss head
Custom Drive Type:	Phillips, Torx, Square, Cross, Pozi, Slotted, Socket
Custom Finish:	Wax, Ruspert, Zinc, Dacromet, etc.
Custom Dimension:	Diameter: M3~M19, 4#~3/4" Length: 6mm~500mm
Sample	Our samples are free, the buyer need to bear the freight cost.
MOQ:	100-200KG
Delivery Time:	30~60 Days
Packing:	Bulk, Small box , Poly bag, Carton and Pallet, etc. We can make your own package.
Certificate:	ISO, SGS, ROHS
Pricing Term:	EXW, FOB, CIF, CNF, DDU, etc
Payment Term:	We can accept T/T(30% in down payment, balance before shipment), L/C, etc.

About Unitek

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Production & Delivery

FAQ

Q: Are you a manufacturing company or trading company?

A: We are a professional manufacturer of fasteners with more than 20 years of export experience.

Q: Can you accept small orders?

A: Do not worry. Please feel free to contact us, in order to give our clients more convenience, we accept small order.

Q: Can you print our own logo or make customization?

A: Yes, we can make it according to your request.

Q: How long is your delivery time?

A: Generally it is 5-10 days if the goods are in stock. If we have no stock, it will be 25-35 days. The specific delivery time is
determined according to your quantity.

Q: What is your payment term?

A: Generally, 30% T/T in advance, balance before shippment or against B/L copy. Please feel free to contact us for detailed
information negotiation.

Steel Hex Head Self-Drilling Roofing Tek Screws with Rubber Washers Stitch Screw 1 Point

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