HSS Universal Drill Bit Set Manufacturer,Supplier and Exporter in India
Product Code : EL-MWLE-9271
Jlab Export is a leading HSS Universal Drill Bit Set Manufacturer,and suppliers in India
Seven high speed steel (HSS) drill bits make up this set, in the metric sizes 4, 5, 6, 7, 8, 10 and 12 mm. They cover the small clearance and tapping holes of everyday bench work, and they let a larger hole be opened up in steps from a small pilot.
Specifications
| Pieces | 7 drill bits |
| Sizes | 4, 5, 6, 7, 8, 10 and 12 mm |
| Material | HSS (high speed steel) |
| Minimum order quantity | 10 units |
| Dispatch time | Usually 4–6 working days |
| Manufacturer | JLab (Jain Laboratory Instruments Pvt Ltd), Ambala, India |
Drilling Practicals in the Fitting Shop
A standard fitting exercise is to drill a row of holes in a mild steel plate to a drawing. Students mark the centres with a Scriber and dot each one with the Punch Tool. They drill on the Drill Press, with the plate held in a Drilling Machine Vice. Holes of 8 mm and above are started with the 4 mm bit and opened up in steps.
For a tapping exercise, they drill a 5 mm hole and cut an M6 thread in it with a tap from the Tap & Die Set, Metric Small. Teachers use the set to show why a larger drill needs a lower spindle speed, and how cutting oil helps on steel.
Frequently Asked Questions
What materials can HSS drill bits cut?
High speed steel bits cut mild steel, cast iron, brass, aluminium, plastics and wood. They are not meant for masonry or hardened steel. Use a slower speed and cutting oil on steel, and a faster speed on wood and soft metals.
Which sizes are in the set?
Seven metric bits: 4, 5, 6, 7, 8, 10 and 12 mm. With these you can drill most small clearance holes on the bench and open a larger hole in two or three steps.
Why start a large hole with a small drill?
The chisel edge at the tip of a large drill does not cut well and tends to wander off the punch mark. A 4 mm pilot hole guides the larger bit, lowers the force needed and puts a rounder hole in the right place.
What spindle speed should I use?
Run small bits faster and large bits slower. For the same cutting speed at the edge, the 12 mm bit turns at about a third of the speed of the 4 mm bit. Wood and aluminium can be drilled faster than steel.
Other Drill Bit Sets
- Drills (cobalt and twist drill sets)
- Drill Bit Set (inch sizes)
- Long Drill Bit Set
- Masonry Drill Bit Set
For a quote, use Add To Cart or send us a message through the contact page.
Last updated: 5 November 2026
