HSS Fully Ground Jobber DIN 338 Cobalt Twist Drill Bit for Drilling Stainless Steel Metal

Basic Info

Model NO.	N/A
Type	Twist Drill Bit
Material	High Speed Steel
Usage	Wood Drilling, Well Drilling, Metal Drilling, Masonry Drilling, Metal Drilling, Steel Drilling
Manufacture Process	Fully Ground/Roll Forged
Shank	Cylindrical/Three Flat/1/4"Hex
Size	1mm-30.0mm
Point Angle	118° or 135°
Surface	Black Oxide, Gold, Bright Finish, Amber
Transport Package	Double Blister/ Skin Card/ Color Box/Plastic Box/
Specification	HSS 4241/4341/6542/M35/M42
Trademark	Nineroars
Origin	China
HS Code	8207509000
Production Capacity	50, 000, 000PCS/Year

Packaging & Delivery

Package size per unit product 10.00cm * 10.00cm * 10.00cm Gross weight per unit product 0.500kg

Product Description

How to choose drill bits?

For wood: these types of drill bits can be used on any wood, whether it is softwood, hardwood, veneer, or plywood.
For metal: these drill bits are used to drill any kind of metal. When it comes to drill bits for metal, inserts are only used for machine tools.
For masonry: these steel drill bits have a brazed tungsten carbide tip.
For tile and glass: these drill bits look like small spears. They are characteristically used with a low drilling speed.

Various Specification

Coating

HSS Drill Bits

Manufacturing	Surface Finish						Sharpening
	White	Black	B&W	Tin Coated	Amber	Black&Gold	118°	135°S.P.	Turto Max	118°S.P	Web Thinning
Rolled Forged		√	√				√	√		√
Rolled Polished	√	√	√	√	√		√	√		√
Fully Ground	√	√	√	√	√	√	√	√	√	√
Milled	√	√	√	√		√	√				√
Standards	DIN338,DIN1897,DIN340,DIN1869,DIN345,DIN333
	Jobber length, ScrewMachine Length, Taper length, Aircraft Extension
Material	HSS4241,HSS4341,HSS6542(M2),HSS CO5%(M35),HSS CO8%(M42)
Shank	Straight shank(Parallel shank), Reduced Shank, hex shank,1/4″Quick change shank,3Flats shank,1/2"shank,3/8"shank
Helix Angle	Type N, Type W, Type H
Rotating	Right Hand, Left Hand
Flute	Normal, parabolic

HSS Hardness

HSS NO.	HSS GRADE	HRC(Rockwell Hardness)
4241	Mo2Cr4Vsi	60-62
4341	Mo3Cr4Vsi	62-65
9341	Mo3Cr4V	63-66
6542/M2	Mo5Cr4V2	63-66
M35	Mo5Cr4V2Co5	64-67 HSS Co5%

Packing

Main Products

Company Profile

Sino abrasives designs, develops, integrates and manufactures a complete range of cutting, grinding and polishing products for all kinds of customers. Including, Superhard materials- Diamond tools, CBN tools, T.C.T tools, Resin bonds abrasives, Sanding tools, Non-woven tools and so on.Sino Abrasives Limited was born in 2003. It's initially just an abrasives tools factory. After a decade hard work, we had been a integrity manufacture, owned the full automatic abrasives production line, Superhard materials production line and Laser welded line.We are always focus exclusively on the Creative and Service. We sincerely hope can supply the most appropriate service and products to you!

Raw material cost advantages:

Sino abrasives limited are cooperated with the best partners including international suppliersand domestic suppliers:3M, NCA BUFFALO, CUMI, SINOMACH, ZHONGNAN, ZZSM and so on.

Quality supervise systemWe firmly believe that management is the first productive force. Sino abrasives limited had been certificated by ISO 9001 at 2009.Meanwhile, we had built ourselves quality management system- Smart system. Advanced chemical analysis equipment, scientific quality control methods, strict management system had ensured we can do standardized regulation and information records for daily work: it starts from rawmaterials, to production, to the finished product testing and so on.

Our Customers

FAQ

1. Are you a manufacturer?
A: Yes, we have our own factory, and have excellent research team, and strict quality inspection procedures. We will surely don'thave a middleman. Also, welcome you visit our factory.2. What about your quality?
A: We have strict quality inspection procedures, and each of our new products has been tested before launching it in the market.3. Can you provide samples?
A: Yes, we can provide samples for you, yet the express fee need to be paid by you.4. If you don't have the size I need, can I have a requirement?
A: Yes, if the size you need we don't have, we can manufacture it as per your requirement. It will have a minimum order.