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M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
Specifications
Material :
HSS-M42
Name :
high speed drill bits
Point angle :
135° degrees
Hardness :
HRC65-67
Oem :
Available
Application :
Aluminum,Stainless Steel,copper,Carbon Steel,Cast Iron
Size :
3/8
Process :
Fully Ground
Type :
Twist Drill Bit
Surface :
TIN coated
Use :
hard plastic / cast iron
Shank :
Straight Shank
Brand Name :
XRTOOLS
Model Number :
3/8
Certification :
ISO9000
Place of Origin :
JIANG SU
MOQ :
500PCS
Price :
0.15-3.7$/PCS
Payment Terms :
T/T, L/C, D/P
Supply Ability :
400,0000Pcs Per Mouth
Delivery Time :
30-45days
Packaging Details :
Plastic box,Double Blister card
Description

M42 Cobalt Drill Bit for Stainless Steel – TiN Coated Jobber Length, 135° Split Point

Product Overview
The M42 8% cobalt high-speed steel jobber drill bit is designed for drilling the hardest materials, including stainless steel, hardened alloys, and cast iron. With superior red hardness, a titanium nitride (TiN) gold coating, and a 135° split point, this drill bit ensures precision, durability, and extended tool life. Manufactured by XINGRUI, it is the professional choice for industrial metal drilling applications.

M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point

Applications

Stainless Steel: Austenitic and duplex grades

Hardened Steels: Tool steels, spring steels, heat-treated components

Cast Iron & Alloy Steel: Excellent for high-strength and abrasive metals

Non-Ferrous Metals: Titanium alloys, brass, bronze, nickel alloys

Industrial Fabrication: Automotive, aerospace, heavy machinery, metal workshops

⚠️ Not intended for wood or soft plastics.

M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point

Advantages

M42 HSS with 8% cobalt: Exceptional hardness and heat resistance

TiN coating: Reduces friction, increases wear resistance, and extends tool life

135° split point: Fast penetration, self-centering, reduced walking

Jobber length: Ideal balance of reach and rigidity

Straight shank: Fits standard keyed and keyless chucks

Fully ground finish: Ensures sharp cutting edges and accurate sizing

M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point

Specifications (Inch Sizes – ANSI Standard, 1/16” to 1/2”)

Size (inch) Decimal (in.) Overall Length (mm) Flute Length (mm)
1/16 0.0625 50 18
5/64 0.0781 55 24
3/32 0.0938 60 28
7/64 0.1094 65 33
1/8 0.1250 70 36
9/64 0.1406 75 40
5/32 0.1562 80 43
11/64 0.1719 85 47
3/16 0.1875 90 52
13/64 0.2031 93 55
7/32 0.2188 96 57
15/64 0.2344 100 60
1/4 0.2500 102 65
17/64 0.2656 107 70
9/32 0.2812 112 74
19/64 0.2969 116 77
5/16 0.3125 119 80
21/64 0.3281 123 84
11/32 0.3438 127 87
23/64 0.3594 131 90
3/8 0.3750 135 94
25/64 0.3906 138 97
13/32 0.4062 142 100
27/64 0.4219 146 103
7/16 0.4375 150 106
29/64 0.4531 152 109
15/32 0.4688 154 112
31/64 0.4844 156 114
1/2 0.5000 160 118

Metric sizes 1.0–13.0mm (0.5mm increments) also available.

Packaging Options

Single Pack: Individual PVC tubes or polybags

Bulk Pack: 10 or 20 pcs per plastic tube or box

Retail Pack: Blister cards, color boxes, or labeled cases

Set Options: 13, 19, and 29-piece jobber drill sets in metal or plastic cases

OEM/ODM: Custom branding, logo laser engraving, and private-label packaging

FAQ
Q1: Can this drill bit handle stainless steel?
Yes, it is specifically designed for stainless steel and other hard alloys.

Q2: What is the benefit of TiN coating?
It reduces heat, lowers friction, and provides up to 3× longer tool life.

Q3: How does M42 compare to M35?
M42 contains 8% cobalt, making it harder and more heat-resistant than M35 (5% cobalt).

Q4: What chuck types are compatible?
It fits standard keyed and keyless drill chucks with straight shank design.

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M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point

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Product Detail
Material :
HSS-M42
Name :
high speed drill bits
Point angle :
135° degrees
Hardness :
HRC65-67
Oem :
Available
Application :
Aluminum,Stainless Steel,copper,Carbon Steel,Cast Iron
Contact Supplier
video
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point
M42 Cobalt Drill Bit Set For Stainless Steel TiN Coated Hss Jobber 135° Split Point

ZHANGJIAGANG FLAME MACHINERY CO.,LTD.

Verified Supplier
6 Years
yangzhou
Since 2018
Business Type :
Manufacturer, Exporter, Trading Company
Main Products :
HSS Drill Bit, Drill Bit Set, Masonry Drill Bit
Total Annual :
500-600
Employee Number :
135~150
Certification Level :
Verified Supplier
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