Polycarbonate Roofing Screw of Aluminum EPDM Washer

Polycarbonate Roofing Screw of Aluminum EPDM Washer Bestech Appliance Ind. Company is an ISO9001 & ISO14001 Factory with over 30 years in manufacturing and trading all sorts of high-qualified fasteners. The standard and non-standard fasteners are in our hot line. Our Advantages are guaranteed quality and lead time with a lower price than other factories. We sincerely welcome your inquiry of socket cap screws and other fastener products.  Polycarbonate Roofing Screw of Aluminum EPDM Washer Application  

Application :

      Roofing screws are made of hardened carbon steel or stainless steel. They can be used for metal, plastic and fiberglass roofing applications. Different screw points can be used for both metal and wood structures. All the roofing screws must have a sealing washer attached, which helps against water penetration. This is the most obvious character of them.   Different Screw Points for Different Applications The roofing screws are available in two kinds of points. One is drill point, the other is sharp point. The roofing screws with drill points are used to fasten to metal structures, and the ones with sharp points are used to fasten to wood structures. Brown painted roofing screw with bonded washer
Specification

Specification :

   Besides our specification down below all products can be highly customized as your requirement

Thread size:	#10 to1/4 (M4.8 to M6.3)
Length:	3/4" to 12" (19 to 300mm)
Recess type:	Hex, Torx etc.
Head type:	Indented hex washer (high head optional), Hex flange, Pan etc.
Thread type:	60° thread angle, ASD, BSD, CSD, Double threads, Hi-Lo thread
Point:	Drill point #2~#5, Reduced point, Spoon point, Drill point with  wings,    Threaded drill point etc.
Finish:	Zinc Plated (Clear/White/Yellow), Coating (Geomet, Dacromet,  Ruspert  etc.), Mechanically Zinc plating etc.
Standard:	IFI, DIN7504, JIS, BS, AS, EN14566 or Customized designs  available.
Others:	Case harden required, screw assembled with steel/SS304 and  EPDM  bonded washer, EPDM washer optional

 
     Main Product :                                                      Main Products :

Self Drilling Screw		Self Tapping Screw		Chipboard Screw
Furniture Screw		Machine Screw		Bolt/Welding Bolt
Nut/Lock Nut		Drywall Screw		Others
				Machine Screw
				Wood Screw
				Concrete Screw
				Socket Cap Screw
				Blind Rivet
				AC Spare Parts
				Ref. Spare Parts
				WM Spare Parts
				Wire/Cable

Testing Technology

Testing Technology :

 

*** Inspection Equipment ***
1. Hardness Test Machines	7. Surface Plating Test Machines
2. 3D Projectors	8. Depth Recesses Test Machines
3. Torque Test Machines	9. Thread Plug Gauges
4. Drill Test Machines	10. Thread Ring Gauges
5. Case Harden Test Machines	11. Vernier Calipers
6. Core hardness Test Machines	12. Micrometer Calipers

   Socket Cap Screw  
   

Procedure of dealing with Customer’s Compalaint

Step 1 :     Step 2 :         Step 3 :     Step 4 :

When receive customer’s complaint, collecting complete information and advising relevant sections to deal with.   Check “ Record of Quality “ which made during production process.  Inspecting retained samples to understand the situation of customer’s complaint, then reporting inspection result to Supervisor.   Discuss with related sections for improving the quality and offering reasonable compensation.   Reporting our resolution to customer and getting customer’s approval.  Asking related sections to improve quality and executing granted compensation.

   Product Overviews

Production Overview :

 

*** Manufacturing Equipment ***

1. Heading Machines

2. Threading Machines

3. Drilling Machines

4. Roller Sorting Machines

5. Packing Machines

      Packing & Shipping Packing information :
1. Industrial packaging: plastic bag +craft paper + carton or wooden ; plastic tube + carton.
2. Commercial packing: 1pc/plastic bag + color box + carton. 
3. As the clients' requirement.   Shipping information :  1. For small quantity, shipment is preferred to shipping with express by UPS, DHL, EMS, TNT or FedEx to meet your deadline on time worldwide basis. 2. For regular mass production, shipments can be arranged by air-shipping, sea-shipping or express. Let us know on your requirement we will try to save your budget and meet deadline. Contact Information   FAQ Q1: Are you a trading company or a manufacturer? A: We are a manufacturer. Q2: How long is your delivery time? A: Generally it is 7-14 days if the goods are in stock, or it is 25-45 days if the goods are not in stock. It depends on your quantities. Q3: Do you provide samples? Is it free or not? A: Yes, we offer samples for free if the requirement is available with our tooling.        

Back to Home