Durable Mills industrial solid 5D carbide drill bit with external coolant flutes

Wear-resistant coating and chip evacuation flute on solid carbide twist drill

Industrial 5D Solid Carbide Drill for High-Precision Metal Machining

The 5D carbide drill by Durable Mills delivers exceptional centering accuracy and tool rigidity across demanding drilling operations. Engineered for cast iron, stainless steel, and alloy steels, this 5D carbide drill optimizes chip evacuation and heat resistance to increase CNC throughput. Choose our high-precision 5D carbide drill bits for stable hole tolerances and extended production runs.

5xD

140°

DIN6535HA h6

He/PT

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High-Performance 5D Solid Carbide Drill (External Coolant)

Manufactured by Durable Mills, this premium 5D carbide drill is specifically developed for high-efficiency, multi-material hole-making. Designed with a standard 5xD drilling depth capability and external cooling geometry, it provides superior dimensional accuracy and exceptional surface finish across cast irons, stainless steels, and heat-treated structural alloy steels.

Key Features & Operational Advantages

High Centering Capability: 140° point angle with specialized chisel edge correction reduces radial walk and eliminates spot-drilling steps.
Advanced Chip Flute Profile: Wide flute geometry ensures rapid chip evacuation and prevents chip packing in deeper 5D holes.
High-Grade Coating System: Multi-layer composite coating provides thermal barrier protection, allowing higher cutting speeds and significantly prolonged tool life.
Precision Shank Form: DIN 6535 HA cylindrical shank with h6 tolerance ensures rigid clamping in hydraulic, shrink-fit, and high-precision collet chucks.
Strict Tolerance Standards: m7 cutting diameter tolerance guarantees reliable hole consistency for mass production runs.

Workpiece Compatibility

Optimized for stable CNC machining operations in gray cast iron, ductile cast iron, structural steel, carbon steel, stainless steel, and alloy steel components.

Technical Specifications

Coolant Feed	External Cooling
Drilling Depth	5xD (Five times diameter)
Cutting Diameter Tolerance	m7
Point Angle	140°
Shank Type	DIN 6535 HA (h6)
Surface Coating	He/PT Premium Wear-Resistant Coating

Product Dimensions & Ordering Chart

Diameter (D) mm	Flute Length (L3) mm	Shank Length (LS) mm	Shank Dia (d) mm	Overall Length (L) mm
3.0	28	28	4	62
3.1	28	28	4	62
3.2	28	28	4	62
3.3	28	28	4	62
3.4	28	28	4	62
3.5	28	28	4	62
3.6	28	28	4	62
3.7	28	28	4	62
3.8	28	28	4	62
3.9	28	28	4	62
4.0	28	28	4	62
4.1	36	36	6	74
4.2	36	36	6	74
4.3	36	36	6	74
4.4	36	36	6	74
4.5	36	36	6	74
4.6	36	36	6	74
4.7	36	36	6	74
4.8	44	36	6	82
4.9	44	36	6	82
5.0	44	36	6	82
5.1	44	36	6	82
5.2	44	36	6	82
5.3	44	36	6	82
5.4	44	36	6	82
5.5	44	36	6	82
5.6	44	36	6	82
5.7	44	36	6	82
5.8	44	36	6	82
5.9	44	36	6	82
6.0	44	36	6	82
6.1	53	36	8	91
6.2	53	36	8	91
6.3	53	36	8	91
6.4	53	36	8	91
6.5	53	36	8	91
6.6	53	36	8	91
6.7	53	36	8	91
6.8	53	36	8	91
6.9	53	36	8	91
7.0	53	36	8	91
7.1	53	36	8	91
7.2	53	36	8	91
7.3	53	36	8	91
7.4	53	36	8	91
7.5	53	36	8	91
7.6	53	36	8	91
7.7	53	36	8	91
7.8	53	36	8	91
7.9	53	36	8	91
8.0	53	36	8	91
8.1	61	40	10	103
8.2	61	40	10	103
8.3	61	40	10	103
8.4	61	40	10	103
8.5	61	40	10	103
8.6	61	40	10	103
8.7	61	40	10	103
8.8	61	40	10	103
8.9	61	40	10	103
9.0	61	40	10	103
9.1	61	40	10	103
9.2	61	40	10	103
9.3	61	40	10	103
9.4	61	40	10	103
9.5	61	40	10	103
9.6	61	40	10	103
9.7	61	40	10	103
9.8	61	40	10	103
9.9	61	40	10	103
10.0	61	40	10	103
10.1	71	45	12	118
10.2	71	45	12	118
10.3	71	45	12	118
10.4	71	45	12	118
10.5	71	45	12	118
10.6	71	45	12	118
10.7	71	45	12	118
10.8	71	45	12	118
10.9	71	45	12	118
11.0	71	45	12	118
11.1	71	45	12	118
11.2	71	45	12	118
11.3	71	45	12	118
11.4	71	45	12	118
11.5	71	45	12	118
11.6	71	45	12	118
11.7	71	45	12	118
11.8	71	45	12	118
11.9	71	45	12	118
12.0	71	45	12	118
12.1	77	45	14	124
12.2	77	45	14	124
12.3	77	45	14	124
12.4	77	45	14	124
12.5	77	45	14	124
12.6	77	45	14	124
12.7	77	45	14	124
12.8	77	45	14	124
12.9	77	45	14	124
13.0	77	45	14	124
13.1	77	45	14	124
13.2	77	45	14	124
13.3	77	45	14	124
13.4	77	45	14	124
13.5	77	45	14	124
13.6	77	45	14	124
13.7	77	45	14	124
13.8	77	45	14	124
13.9	77	45	14	124
14.0	77	45	14	124
14.1	83	48	16	133
14.2	83	48	16	133
14.3	83	48	16	133
14.4	83	48	16	133
14.5	83	48	16	133
14.6	83	48	16	133
14.7	83	48	16	133
14.8	83	48	16	133
14.9	83	48	16	133
15.0	83	48	16	133
15.1	83	48	16	133
15.2	83	48	16	133
15.3	83	48	16	133
15.4	83	48	16	133
15.5	83	48	16	133
15.6	83	48	16	133
15.7	83	48	16	133
15.8	83	48	16	133
15.9	83	48	16	133
16.0	83	48	16	133

Frequently Asked Questions (FAQ)

Q1: What materials are suitable for this 5D carbide drill?

This tool is engineered for high performance in gray cast iron, ductile cast iron, carbon steels, alloy steels, and stainless steels.

Q2: Does this drill require a center drill or spot drilling operation?

No. The 140-degree point geometry and refined chisel edge eliminate radial deviation, enabling direct drilling without prior center spotting.

Q3: Can Durable Mills supply custom drill diameters or specific coatings?

Yes. We accommodate custom diameters, step drills, and application-specific PVD coatings. Please submit your tooling drawings through our contact page.

Q4: What are the packaging and bulk ordering terms for international distributors?

We provide standard export plastic tube packaging or custom OEM laser markings and packaging for volume distributors. Contact our sales department via info@durablemills.com for wholesale pricing schedules.

Categories Solid Carbide Drills, Standard Twist Drills Tags 140 degree point angle drill, 5D Carbide Drill, 5xD Jobber Drill, alloy steel drilling tools, B2B carbide drill vendor, Carbide CNC Drill Bit, carbide drill bit manufacturer, CNC drilling tooling supplier, DIN 6535 HA Carbide Drill, External Coolant Carbide Drill, high performance drill for stainless steel, m7 tolerance carbide drill, Solid Carbide Twist Drill, wholesale carbide drill bits Brand: Durable Mills