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HSS Tube Sheet Shell Drill, Conical Countersink Stepped Bit
US$0.10-5.00
1 Piece
Product profile
Customization
AvailableCustomized
CustomizedStandard
DIN, JIS, AISIModel NO.
DM4-S003Length
Stub-lengthType
Step Drill BitMaterial
High Speed SteelUsage
Metal DrillingShank
Hex / Round / TriangleHardness
60-66HRCSurface Treatment
Bright, Amber, Tin-CoatedFlute
Straight or SpiralPoint Angle
118 Pointed Angle, 90 Stepped AngleApplication
Metal Stainless Steel DrillingDiameter
4mm-39mmTransport Package
Plastic Box, Blister Card, Wooden Box, Metal BoxSpecification
4mm-39mmTrademark
DMOrigin
Danyang City, Jiangsu Province, ChinaHS Code
8207509000Production Capacity
300000 Piece/Pieces Per WeekKey features
Multi-Size Drilling Capability: Drills multiple hole sizes from 4mm to 60mm using a single step drill bit.
No Pilot Hole Required: Drills round holes in metal, plastic, and wood without center punching or pilot holes.
Precision Laser Etching: Hole sizes are permanently marked on the flute for easy diameter identification.
De-burred Hole Finish: Produces cylindrical bores with de-burred edges for clean results.
Anti-Slip Shank Design: Flatted shank prevents slippage in three-jaw chucks during operation.
Wide Material Compatibility: Suitable for drilling steel, brass, aluminum, copper, plastic, and wood.
Customizable Shank Options: Available in Hex, Round, or Triangle shank configurations based on requirements.
Company profile
CertifiedBusiness Type: Trading CompanyExport Year: 2015-12-15 CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤15h CertifiedTerms of Payment: LC, T/T, D/P, etc. CertifiedInternational Commercial Terms(Incoterms): FOB, CIF, CFR
About Our Factory & Business Background
AddressDongfang Road25, Danyang City, Zhenjiang, Jiangsu, China
Plant Area250 square meters
Number of Employees8
Registered Capital100,000 RMB
Average Lead TimePeak Season Lead Time: one month Off Season Lead Time: one month
Our Production Capability & Technical Expertise
Main ProductsTools
R&D Engineers1 people
Our Industry Experience & Global Business Record
Year of Establishment2015-12-08
Main MarketsNorth America, South America, Europe, Southeast Asia/ Mideast, Africa, East Asia(Japan/ South Korea), Australia, Domestic
Annual Export Revenue3,000,000 USD
Number of Foreign Trading Staff4
Overseas Agent/BranchNo
Product Q&A
Q:What materials can this step drill bit be used on?
A:
It is designed for drilling metal (steel, brass, aluminum, copper), plastic, and wood.
Q:Do I need to drill a pilot hole before using this bit?
A:
No, no center punching or pilot hole drilling is required for most sizes.
Q:What is the maximum thickness of metal this bit can drill?
A:
It can drill holes in most metals up to 1/8 inch (3.2mm) thick.
Q:How are the hole sizes indicated on the drill bit?
A:
The diameter markings are permanently laser-etched in the flute area for easy determination.
Q:What are the available shank types?
A:
Shank options include Hex, Round, and Triangle shapes.
Send Inquiry
*To:DANYANG DAMING TOOLS CO., LTD.
DANYANG DAMING TOOLS CO., LTD.*Content:
Supplier replies will be sent to your registered email
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