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4241 HSS Drill Bit Roll Forged 12mm Metal Black Oxide Twist Drill Bits 1 – 13mm For Steel

4241 HSS Drill Bit Roll Forged 12mm Metal Black Oxide Twist Drill Bits 1 – 13mm For Steel

Brand Name:	XRTOOLS
Model Number:	5.5MM
MOQ:	500PCS
Price:	0.04-0.45$/PCS
Delivery Time:	30-45days
Payment Terms:	T/T, L/C, D/P

Detail Information

Product Description

Detail Information

Place of Origin:

JIANG SU

Certification:

ISO9000

Coating:

Black Coating

Handle:

Straight

Application:

Metal Drilling

Shank:

Helix Shank

Point Angel:

118

Standard:

DIN338 For Drill Bit

Cutting Direction:

Right Hand

Number Of Flutes:

Packing:

Plastic Box

Flute Type:

Spiral

Material:

High Speed Steel

Surface Treatment:

Black Oxide

Packaging Details:

Plastic box,Double Blister card

Supply Ability:

400,0000Pcs Per Mouth

Highlight:

4241 HSS Drill Bit

steel 12mm metal drill bit

1mm black oxide drill bit for steel

Product Description

4241 HSS Black Drill Bit Set – Roll Forged General Purpose Twist Drill Bits 1–13mm

Product Overview

The HSS 4241 roll forged drill bit with black oxide finish is designed as a cost-effective and reliable tool for everyday drilling needs. Manufactured from high-speed steel grade 4241 and treated with a black surface coating, this drill bit resists corrosion, improves chip evacuation, and minimizes friction during drilling. Produced by XINGRUI, it provides an excellent balance between durability and affordability, making it highly suitable for DIY users, home improvement, workshops, and light industrial applications.

Manufacturing Process

These drill bits are made through roll forging, a process in which heated HSS rods are rolled into precise shapes under high pressure. This manufacturing method produces a tough and resilient drill bit while maintaining economical pricing. The black oxide finish enhances surface hardness, protects against rust, and reduces heat build-up. With a 118° point angle, the bit provides smooth hole entry, reduces walking, and ensures stable drilling performance.

Applications

The black-finished 4241 drill bits are versatile and recommended for:

Woodworking: Softwood, hardwood, plywood, MDF, particleboard

Plastics: PVC pipes, ABS sheets, acrylic, polycarbonate, and composites

Light Metals: Aluminum, copper, zinc, brass, and mild steel sheets

Household & DIY Projects: Furniture installation, cabinetry, wall fixtures, small repairs

Workshops: General drilling tasks that do not require premium cobalt or M2 bits

⚠️ Not suitable for stainless steel, heat-treated steels, or high-carbon alloys.

Advantages

HSS 4241 material – tough and economical for general drilling

Roll forged construction – high toughness and stable quality

Black oxide finish – reduces wear, prevents rust, and lowers friction

118° point design – easy positioning and smooth drilling

Versatile applications – suitable for wood, plastics, and light metals

Wide availability – offered in both metric and inch sizes

Specifications (Metric, 1.0–13.0 mm, 0.5 mm increment)

Diameter (mm)	Overall Length (mm)	Flute Length (mm)
1.0	34	12
1.5	40	18
2.0	49	24
2.5	57	30
3.0	61	33
3.5	70	39
4.0	75	43
4.5	82	47
5.0	86	52
5.5	93	57
6.0	93	57
6.5	101	63
7.0	109	69
7.5	109	69
8.0	117	75
8.5	117	75
9.0	125	81
9.5	125	81
10.0	133	87
10.5	133	87
11.0	151	109
11.5	151	109
12.0	151	109
12.5	151	109
13.0	151	109

Inch sizes from 1/16” to 1/2” also available.

Packaging Options

Bulk Packaging: 10 pcs or 20 pcs per PVC bag or plastic tube

Retail Packaging: Blister cards, plastic boxes, or hanging packs with labels

Drill Bit Sets: 13, 19, or 29-piece sets supplied in durable plastic or metal cases

OEM/ODM: Custom logos, laser marking, and private-label packaging available

FAQ

Q1: Can these drill bits be used on stainless steel?

No, they are only recommended for soft metals, plastics, and wood. Stainless steel requires cobalt (M35) drill bits.

Q2: What is the role of the black oxide coating?

It provides rust protection, reduces heat generation, and extends the service life of the drill bit.

Q3: Are these suitable for professional use?

Yes, they are widely used in workshops and light industry where affordable and reliable drill bits are needed.

Q4: Do you supply sets with both metric and inch sizes?

Yes, sets are available in both metric (1–13mm) and inch (1/16”–1/2”) increments.

Tags:

HSS Drill Bit

Drill Bit Set

Masonry Drill Bit

SDS Drill Bit

Wood Drill Bit

HSS Machine Taps

HSS Annular Cutter

Thread Dies

Taps And Dies Set

BI Metal Hole Saws

HSS Hole Saws

TCT Hole Cutters

TCT Saw Blades

Diamond Saw Blades

Screw Driver Bits

HSS End Mill

HSS Reamers

HSS Drill Bit

Drill Bit Set

Masonry Drill Bit

SDS Drill Bit

Wood Drill Bit

HSS Machine Taps

HSS Annular Cutter

Thread Dies

Taps And Dies Set

BI Metal Hole Saws

HSS Hole Saws

TCT Hole Cutters

TCT Saw Blades

Diamond Saw Blades

Screw Driver Bits

HSS End Mill

HSS Reamers

products details

4241 HSS Drill Bit Roll Forged 12mm Metal Black Oxide Twist Drill Bits 1 – 13mm For Steel

4241 HSS Drill Bit

steel 12mm metal drill bit

1mm black oxide drill bit for steel

4241 HSS Black Drill Bit Set – Roll Forged General Purpose Twist Drill Bits 1–13mm

Product Overview

Manufacturing Process

Applications

Advantages

Specifications (Metric, 1.0–13.0 mm, 0.5 mm increment)

Packaging Options

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