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Basic Info.
Packaging & Delivery
Product Description
Taiwan Fast Shipping Colour Painted Carbon Steel Hex Washer Head Self Drilling Roofing Tek Screw #12x25 With EPDM Washer
Head Type | Hex Head, Flat Head, Pan Head, Round Head, Hex Washer Head | |
Size | ST2.9, ST3.5, ST4.2, ST4.8, ST5.5, ST6.3 (#4 - #14) | |
Length | 10 ~300mm | |
Ponit No. | #3, #3.5, #4, #5 | |
End Points | Drilling, Tek,Type17, Tapping, Spoon, Wing Tek | |
Thread | Thread: full thread, half thread, partical thread, AB, A ,C thread | |
Groove | Philips, pozi, slotted, hex, square, socket, combined | |
Packing | Small Box+carton+pallet Or customized by client request | |
Surface | Polish, Plain, Galvanized (Various of color), Paint, Power Coated, Nickel, Ruspert | |
Material | 1.Stainless steel | SUS201,304,316,410 |
2.Carbon steel | C1018,C1022,C10B21,C10B33,C1035,C1045,40CrMo,42CrMo | |
3. Alloy steel | SCM435,C10B21,C10B33 | |
Standard | DIN7504k | |
Application | Building,Industry,Furniture,Sanitary,Electronics,Traffic. |

size(mm) | size(mm) | size(mm) |
4.2*13 | 5.5*32 | 6.3*25 |
4.2*16 | 5.5*38 | 6.3*32 |
4.2*19 | 5.5*41 | 6.3*38 |
4.2*25 | 5.5*50 | 6.3*41 |
4.2*32 | 5.5*63 | 6.3*50 |
4.2*38 | 5.5*75 | 6.3*63 |
4.8*13 | 5.5*80 | 6.3*75 |
4.8*16 | 5.5*90 | 6.3*80 |
4.8*19 | 5.5*100 | 6.3*90 |
4.8*25 | 5.5*115 | 6.3*100 |
4.8*32 | 5.5*125 | 6.3*115 |
4.8*38 | 5.5*135 | 6.3*125 |
4.8*45 | 5.5*150 | 6.3*135 |
4.8*50 | 5.5*165 | 6.3*150 |
5.5*19 | 5.5*185 | 6.3*165 |
5.5*25 | 6.3*19 | 6.3*185 |


Q:What is your minimum order quantity?
A: There's no minimum quantity ,you can buy any quantity. However, few in number, the unit price will be a little higher.
Q:How can I get a sample to check your quality?
A: After price is confirmed, you can require samples to check our quality. Free for existing samples ,
but you need to paid the express freight. For sample making, we will charge a sample fee.
Sample fee will be confirmed according to the products' craftwork.
Q:How can I customize my products?
A: Attach your drawings with details.(Surface treatment, material, quantity and special requirements etc).
Q: What is your terms of payment ?
A: Payment<=2000USD, 100% in advance. Payment>=2000USD, 50%-70% T/T in advance (depending on different situations.) ,
balance before shipment.
Q.What is the quality of your products guarantee?
A:We have passed ISO9001:2015 Quality Management System Certification, SGS testing report, If the quality doesn't accord the standard,
you can exchange the goods for free.
Q:What's the delivery time?
A: For products in stock, we can ship it within 2 working days after receiving your payment. For custom order, within 24 tons,
production time is 8-20 working days after confirmed every details.