Fractional inch HSS drill bits for workshops working to imperial drawings and fasteners.
Inch-size HSS drill bits cover common fractional diameters used with BSW and imperial fasteners. They are ground from high-speed steel for reliable performance in metal drilling and are well suited for tapping-drill and clearance-hole work.
| Brand | National Enterprises |
|---|---|
| Product code | NE-DB-IN |
| Category | HSS Drill Bits |
| Material | High-Speed Steel (HSS) |
| Standard | Jobber length |
| Finish | Bright / Black oxide |
| Packaging | Packs of 10 pcs per size |
| Minimum order | 1 pack |
| Type | Twist drill, straight shank |
| Point angle | 118° |
| Size range | 1/16" – 1/2" |
Common sizes are listed below. Other sizes may be available on request. Ask our team for current stock.
| Size (inch) | Decimal (mm) | |
|---|---|---|
| 1/16" | 1.59 | |
| 1/8" | 3.18 | |
| 3/16" | 4.76 | |
| 1/4" | 6.35 | |
| 5/16" | 7.94 | |
| 3/8" | 9.53 | |
| 7/16" | 11.11 | |
| 1/2" | 12.70 |
Match the diameter, thread or profile to your drawing. For taps, use the correct tapping drill size listed in the size table.
Use cutting speeds suited to the material. Harder materials need lower speeds; excess speed shortens tool life.
Cutting oil or coolant reduces heat, improves finish and extends tool life when cutting steel.
Clamp the workpiece securely and wear safety glasses and gloves. Replace worn or chipped tools.
Yes. We supply workshops, retailers, contractors and industrial buyers in bulk. Send us your required sizes and quantities for a wholesale quotation.
Yes, we dispatch orders across Pakistan through reliable courier and cargo services. Delivery charges depend on the destination and order weight.
Use the Request a Quote form on this page, call us or send a WhatsApp message with the product name, size and quantity. Our team replies with availability and pricing.
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