Introduction
3.5*25 Black Phosphated Bugle Head Drywall Screws.
Technical data of screws:
fine thread standard | |||||
head width | thread diamter | diameter | |||
6# | 3.5 | 7.9-8.10 | 3.40-3.60 | 13-19 | 0.5 |
7# | 3.9 | 7.9-8.10 | 3.70-3.90 | 25-30 | 0.8 |
8# | 4.2 | 7.9-8.10 | 4.0-4.30 | 25-30 | 1.2 |
10# | 4.8 | 8.5-9.0 | 4.70-4.90 | 55-90 | 1.5 |
100-152 | 2.5 | ||||
coarse thread standard | |||||
head width | thread diamter | diameter | |||
6# | 3.5 | 7.9-8.10 | 3.65-3.90 | 13-19 | 0.5 |
7# | 3.9 | 7.9-8.10 | 3.90-4.20 | 25-30 | 0.8 |
8# | 4.2 | 7.9-8.10 | 4.30-4.60 | 25-30 | 1.2 |
10# | 4.8 | 8.5-9.0 | 4.90-5.30 | 55-90 | 1.5 |
Package & shipping of screws:
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Wire Package
We strictly control the production process and package procedure, and can offer different ways of package.
Production and Inspection Equipment
We have advanced production equipment such as cold heading machine, thread-rolling machine, self-drilling screw forming machine, screw washer assembling machine and automatic multi-station cold heading machine (with six dies). And have advanced inspection equipment as follows: measuring projector, 3D coordinate measuring machine, salt spray tester, drilling speed machine, stiffness tester, torque tester and other standard measuring instruments.
Production Process
Process 1:
wire→Cold heading→forming→thread-rolling→annealing→surface treatment→packing and shipment
Process 2:
wire→Cold heading→thread-rolling→annealing→surface treatment→packing and shipment
Process 3:
wire→Cold heading→point cutting→annealing→surface treatment→packing and shipment
FAQ:
Q1. Are you factory ?
A1: Yes, our company is located in Wuxi China, welcome to visit us.
Q2. What is your main products?
A2: Wood screws, Drywall screws, Self-drilling screws, Machine screws, Tapping screws, Precision electronic screws and so on, according to JIS, ANSI, DIN, and ISO standards.
Q3. How long is your delivery time?
A3: For products in stock, we can ship it within 7 days after receive payment.
For custom order, within 24 tons, production time is 20-35 days after confirmed every details.
Q4. What is your payment?
A4: 100% through T/T. 30% value of T/T in advance and other 70% balance on B/L copy.
For small order less than 1000USD, would suggest you pay 100% in advance to reduce the bank charges.
Q5.Can you provide a sample?
A5: Sure, Our sample is provided free of charge, not including courier fees.
Contact us:
Sales Manager: Lin
Mobile: +86-18061512788
Wechat No.: Linlu199166
E-mail: overseatrade@aotianwire.com
Web: http://en.aotianwire.com/ http://en.wxzhongrui.cn/
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