21PCS Fully Ground HSS Cobalt Twist Drill Bits Set in Metal Box

Price $5.10 Compare
Min Order 100 Sets
Availability In Stock
Shipping From Zhejiang, China
Popularity 526 people viewed
Quantity
+-
 

Hangzhou Union Hardware Co., Ltd

VIP   Audited Supplier 3 years
Profile Certified by SGS/BV
  • Zhejiang, China
  • Connie Wu (Ms.)  
    Sales Manager
UNT-06
Black
Folded
RoHS, CE, GS
HSS
Customized
Metabo, DeWalt, Hitachi, MAKITA, BOSCH
Black Oxide, Ti-Coated, Amber Finished
DIN, ISO
Drilling Steel, Wood, Concrete and etc
Sea Freight, Air, Train, Express
Available
UN
Plastic Boxes with Cartons
1/4 inch drive
China
820412000
Product Description

Our Advantages

Product Description

 

Hex Size1/4 inch
Length47, 53, 59, 60, 83, 87mm
Working Length16, 20, 26, 32, 36, 50mm
MaterialHSS
InnerFlexible Plastic Holders
PackagingEasy Open Boxes
Surface TreatmentBlack Oxide, Ti-Coated, Amber Finished, Bright Finish
StandardDIN
CustomizationAcceptable
Delivery PackagingPlastic Boxes with Cartons
BrandUnion
OriginChina

PTA Sets

PTA sets provide homeowners with a versatile collection of tools for basic home repair and improvement projects. These kits contain:

  • Screwdriver bits (Phillips and flathead) in common sizes to handle different screw types.
  • Drill bits in popular sizes to drill pilot holes or drive screws. The hex shanks fit any standard drill.
  • Sockets (1/4" or 3/8" drive) to loosen and tighten bolts, nuts, and other hardware. Metric and standard sizes are included.
  • Socket adapters to use 3/8" drive sockets on 1/4" drive tools.
  • Nut driver sockets to drive hex nuts and bolts in wood, metal, and machinery.
  • Bit holders to connect screwdriver bits to and use like manual screwdrivers.

Affordable and compact, PTA sets have professional-grade bits and sockets to tackle minor repairs and projects around the house and garage. The variety covers the most common home improvement tasks.

Main Fastener Coating
TypesApplicationSpray Test HoursCharacteristics
Mirror Nickel-platingALL Metal72HoursStable
Excellent polishing performance
Improve Wear resistance
Wide range of applications
Matt Nickel-platingALL Metal72Hours
Black Nickel-platingALL Metal48HoursHigh absorption rate of solar energy
Used in solar collector panels.
Manganese PhosphateALL Metal72HoursEnhanced resistance
Sand BlastALL Metal-Remove paint, rust, and residue scratches or casting marks
ElectrophoresisALL Metal1000HoursMaintain metallic luster
Anti-corrosion properties
Color ElectroplatingALL Metal96HoursImprove mental strength
Prevent metal oxidation
 
Steel Material  Chemical Composition
TypesCSiVCrMnNiMoCharacteristic
CR-MO0.18-0.230.15-0.35-0.40-0.600.90-1.20-0.13-0.2041xx-series SAE steel grades
Excellent strength-to-weight ratio
Stronger and harder
Not easily welded
CRV0.50.30.180.80-1.100.70-0.90--6000-series SAE steel grades
Suitable for hardening
Resist abrasion, oxidation, and corrosion
Improve material elasticity
S20.40-0.550.90-1.20<0.50-0.30-0.50<0.300.30-0.60One of seven types of shock-resisting steels under the AISI Classification
High strength
High toughness
Wear resistance
High hardness
Resistance to shock loading
45#0.42-0.050.17-0.37-≤0.250.50-0.80≤0.25-Compared with  A3, it has higher strength and resistance to deformation.
A30.95-1.050.10-0.500.15-0.504.75-5.500.40-1.00-0.90-1.40High-quality high carbon alloy tool steel

 

Product Application


 

Company Profile

Quality Control

Certifications

FAQ

  • Contact Supplier
Message Type
* Message Content
* Name  
* Phone
* Email
* CAPTCHA  
$2.00 2000 Pieces(MOQ)

OEM Chrome Vanadium Steel Driver Nut Socket with DIN ISO Standard

Hangzhou Union Hardware Co., Ltd
$30.00 100 Sets(MOQ)

Factory Hot Sale Hand Tools 1/2 Inch Drive Manual Torque Spanner Mechanical Adjustable Torque Wrench for Bolts

Hangzhou Union Hardware Co., Ltd
$300.00 10 Sets(MOQ)

Low MOQ Hand Tool Adjustable Alloy Steel Reversible Torque Wrench Set 1/4 3/8 1/2 Inch Customized Torque Wrench with Factory Manufacturing

Hangzhou Union Hardware Co., Ltd
$0.22 200 Pieces(MOQ)

ODM OEM ISO9001 BSCI Certification M10 M56 Hexagon Head Concrete Bolts

Hangzhou Union Hardware Co., Ltd
$0.15 500 Pieces(MOQ)

T118A 75mm 21t HSS Metal Cutting Jigsaw Blade for T-Shank Jig Saws

Nanjing Jinmeida Tools Co.,Ltd
$0.30 200 Pieces(MOQ)

T Shank Design T308b Hcs 2-Side Clean Jig Saw Blade for Wood

Nanjing Jinmeida Tools Co.,Ltd
$60.00 5 Pieces(MOQ)

Tct Circular Saw Blade for Solid Wood Cutting Factory Supply

Sino Star (Zhengzhou) New Materials Co., Ltd.
$1.00 100 Pieces(MOQ)

Nickel + Copper Straight Soldering Iron Tip

Ergas Technology Co., Ltd.
$0.52 5000 Pieces(MOQ)

High Quality Motor Accessories Carbon Brush Assembly for Auto Blower Motor

Ningbo NIDE Tech Co., Ltd.
$550.00 1 set(MOQ)

Spare Parts for Max Rb397, Rb398s Rebar Tier Tools

Henan Gleery Machinery Equipment Co., Ltd.