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7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit

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7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit

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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

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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:

HSS Step Drill Bit

      

Fully Ground HSS Drill Bits

      

HRC 61 Step Drill Bit

      
China 7.5mm Amber DIN 338 Fully Ground HSS Step Drill Bit wholesale

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