N+SP/+SP/SP (upgrade) spiral wire attack
Metric coarse tooth (M)
The screw accuracy grade: YAMAWAP
The tap material: HSS-E
The cutting edge of the tooth number: eat 2.5 teeth
The surface treatment: N-SP (OX) - acidification TIN- coating
The application of cut material:
Medium and low carbon steel, copper, aluminum, magnesium alloy and so on under tensile strength 750N/MM2
Tensile strength below 600-900N/MM2, medium carbon steel, alloy steel, bronze and so on
Contact: 1, you can click on the shop front Taobao Wangwang and online customer service contact.
2, if you have any questions, welcome to inquire, we will give you a detailed answer.
About receipt and delivery: 1, the shop default partner for Zhong Tong, Yun Da, Yuantong express! Xinfeng express in Guangdong province. Special circumstances send EMS and SF express, need to make up the postage difference. If you need to specify the courier company, please contact us ahead of time.
2, when receiving goods, please check the parcel in front of the courier, confirm the receipt after the completion. If the package is damaged or the number is wrong, please refuse to sign, immediately contact the owner, otherwise the logistics link caused by the problem will not be able to investigate the courier company's responsibility.
3, the store supports mixed batch, buy more than one commodity, the first heavy only pay once postage, overweight part according to the courier company charge standard implementation, such as the postage doubt, you can consult the online customer service.
1., buy shop goods, since the receipt of express delivery within 3 days, if not for the use of goods, did not destroy the original packaging, does not affect the two shop sales, shop promise customers can return goods!
2. return process: before the exchange of goods, please contact with customer service, such as responsibility in the shop, please provide photo instructions; Pro exchange goods need to be returned to the designated address of the shop; after confirmation of receipt of the goods, will promptly deal with the exchange for the parent.
3. return postage: non store responsibility (with the description of goods, merchandise quality does not match the problem, send the wrong goods store), and by the buyer return requirements: whether shipping products or non shipping goods, all return shipping by the buyer, postage payment on the negotiation results shall prevail. Due to the defective goods, the postage caused by the exchange behavior is all taken by the store, but please contact with the store before returning the goods, and the postage payment is based on the result of the negotiation between the two parties.
4. family tips: after receiving the goods, please carefully check, confirm no problem, then make evaluation. If you have any questions, please contact with the store first and never shirk responsibility. Express is the third party service, not a small store can control, please do not express the company's service as the basis for the evaluation of the store. If there are any problems in the logistics link, the store will actively handle.
I wish you a happy shopping!