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7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit
7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit
Specifications
Brand Name :
Starry
Model Number :
7.5mm
Certification :
ISO9000
Place of Origin :
JIANG SU CHINA
MOQ :
300Pcs
Payment Terms :
T/T, L/C
Supply Ability :
3000000pcs per mouth
Delivery Time :
30-45days
Packaging Details :
plastic box,pvc bags,Single piece with blister card package
Product name :
hss cobalt drill bits hss drill bits metal
material :
M35
Standard :
DIN 338
Process :
fully ground
Hardness :
HRC 61 - 66
Surface finished :
Amber
Application :
copper, Carbon Steel, Cast Iron
Description

7.5mm Amber DIN 338 fully ground high Speed Steel Step Drill Bit

Description:

COBALT STEEL - Manufactured from M35 grade cobalt steel, with molybdenum and cobalt added to creates a hardened alloy,

measuring Rockwell hardness up to 67, for much faster cutting and extra longer life span, ideal for repeated drilling in metalworking
It is often used in power-saw blades and drill bits. It is superior to the older high-carbon steel tools used extensively through the 1940s in tha

t it can withstand higher temperatures without losing its temper (hardness). This property allows HSS to cut faster than high carbon steel, hence the name high-speed steel. At room temperature, in their generally recommended heat treatment, HSS grades generally display high hardness (above Rockwell hardness 60) and abrasion resistance (generally linked to tungsten and vanadium content often used in HSS) compared with common carbon and tool steels.

Detail:

Item Name: 7.5mm Amber DIN 338 fully ground high Speed Steel Step Drill Bit
Material M35
Shank Hex Shank
Process Full ground
Surface finished

Amber
Hardness 65-67 HRC
Color cooper-colored
Size 7.5mm

Flute Type

Total Length

125mm
Flute Length

81mm
Usage steel, Drilling holes in metal
Customize Accepted

M35 Drill bits Size List :

Size Limit Overall Len Thread Len Size Code
M1.6x0.35 6h 40 8 1
M1.7x0.35 7h 40 8 2
M1.8x0.35 8h 40 8 3
M2x0.4 6h 45 9 4
M2.2x0.45 6h 50 9 5
M2.6x0.45 6h 50 9 7

HSS M35 Cobalt Parallel Shank Drill Bits Application

fit for standard drill chucks and regular round collet chucks Manufactured with all kinds of drill bit for metal,
such as HSS Twist Drill, HSS Center Drill Bit, HSS Step Drill Bits, Reduced Shank Drill Bit, Taper Shank Drill Bits, and etc.

Made into HSS Twist Drill Bits; HSS Step Drill Bit; Taper Shank Drill Bits; Reduced Shank Drill Bits; Bi-metal Hole Saw

Product tags

r28 drill rods

,

bosch guide rail

,

t38 rock drill bit
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7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit

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Product Detail
Brand Name :
Starry
Model Number :
7.5mm
Certification :
ISO9000
Place of Origin :
JIANG SU CHINA
MOQ :
300Pcs
Payment Terms :
T/T, L/C
Contact Supplier
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7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit

Jiangsu Xingrui Tools CO.,LTD

Verified Supplier
7 Years
Since 2008
Business Type :
Manufacturer, Trading Company
Main Products :
HSS Machine Taps, HSS Hand Tap, HSS Metric Taps
Total Annual :
10000000-20000000
Employee Number :
100~120
Certification Level :
Verified Supplier
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