HSS 4241 Roll Forged Drill Bit – Black & Gold Finish
Product Description
The 4241 roll forged drill bit is an economical and versatile solution for general-purpose drilling. Manufactured from HSS 4241 grade and enhanced with a black and gold surface finish, it offers improved wear resistance, reduced friction, and better chip evacuation compared to bright-finish drill bits. This series is widely used for woodworking, plastics, and light metal drilling, making it ideal for DIY users, workshops, and light industry applications. Produced by XINGRUI, the drill bits combine affordability with dependable quality.
Production Process
These drill bits are produced using roll forging technology, where heated high-speed steel rods are rolled into shape. This process ensures toughness, dimensional consistency, and cost efficiency. Unlike fully ground bits, roll forged drill bits are less brittle and more impact resistant, making them suitable for everyday drilling tasks. The black and gold finish not only provides corrosion protection but also reduces heat build-up during operation.
Applications
Woodworking: Softwood, hardwood, plywood, MDF, chipboard
Plastic Drilling: PVC, acrylic, polycarbonate, and other polymers
Light Metals: Aluminum, copper, brass, zinc, and mild steel
DIY & Home Projects: Furniture assembly, household installations, small repairs
Workshop Use: General-purpose drilling where premium cobalt or M2 bits are not necessary
⚠️ Not recommended for stainless steel, high-carbon steel, or hardened alloys.
Key Advantages
Made from HSS 4241, ensuring a balance of hardness and toughness
Roll forged process – economical and durable
Black & gold finish – corrosion-resistant and reduces friction
Standard 118° point angle – smooth drilling with minimal walking
Wide size range available – both metric and inch sizes
Specifications (Metric Sizes: 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 Information
Bulk Pack: 10 pcs or 20 pcs in PVC bags or plastic tubes
Retail Pack: Blister cards, color boxes, or plastic cases with size marking
Set Options: 13-piece, 19-piece, 29-piece drill bit sets in metal or plastic cases
OEM/ODM: Custom logo laser marking, private label, and tailor-made packaging available
FAQ
Q1: Can 4241 drill bits cut stainless steel?
No, they are intended for wood, plastics, and light metals. For stainless steel, use M35 cobalt drill bits.
Q2: What is the benefit of black & gold finish?
It reduces friction, prevents premature wear, and enhances chip evacuation.
Q3: How does roll forged compare with fully ground bits?
Roll forged bits are more affordable and tougher, while fully ground bits offer higher precision and are better for hard metals.
Q4: Are custom sets available?
Yes, we provide metric and inch sets, with options for customized packaging.
Product Tags:
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6542 5.0mm HSS Drill Bit Black Amber Surface Hss 4241 Steel Images
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