Alpha
1/4 Jobber Drill Bit
1/4 Jobber Drill Bit
Action Outdoors Shop
1/348 Rosebank Road
Avondale
AUK
Auckland 1026
New Zealand
Jobber drill bits are general-purpose drill bits with a standard length, offering a balance between rigidity and reach. These high-speed steel (HSS) drill bits are ideal for drilling metal, wood, plastic, and other materials. Available in various coatings such as cobalt, titanium, and black oxide, they provide durability and precision for professional and DIY applications.
Imperial Jobber Drill Bit Sizes & Specifications
| Size | Decimal Equivalent (inches) | Applications |
|---|---|---|
| 1/16" | 0.0625" | Small precision holes in metal, wood, and plastic |
| 5/64" | 0.0781" | Fine drilling, electronics, small fasteners |
| 3/32" | 0.0938" | Light-duty metalwork, pilot holes |
| 7/64" | 0.1094" | General-purpose small drilling tasks |
| 9/64" | 0.1406" | Woodworking, plastics, and thin metals |
| 5/32" | 0.1563" | Common for DIY, metal, and wood applications |
| 11/64" | 0.1719" | Intermediate size for various drilling tasks |
| 3/16" | 0.1875" | Standard for general-purpose drilling |
| 13/64" | 0.2031" | Used in woodworking and automotive drilling |
| 7/32" | 0.2188" | Commonly used for hardware installations |
| 15/64" | 0.2344" | General drilling tasks in soft and hard materials |
| 1/4" | 0.2500" | Popular size for anchors, pilot holes, and construction |
| 17/64" | 0.2656" | Intermediate size for metal and wood drilling |
| 9/32" | 0.2813" | Ideal for furniture making and general use |
| 5/16" | 0.3125" | General workshop drilling, bolt holes |
| 21/64" | 0.3281" | Slightly larger than 5/16" for snug fits |
| 11/32" | 0.3438" | Heavy-duty drilling in metal and wood |
| 13/32" | 0.4063" | Used for large fasteners and industrial work |
| 3/8" | 0.3750" | Common size for structural and industrial applications |
Features & Benefits
✔ Material – Typically made from HSS (High-Speed Steel) for durability and heat resistance
✔ Shank Type – Straight shank fits standard drill chucks
✔ Point Angle – 118° for general-purpose drilling, 135° for hard metals
✔ Coating Options – Available in Titanium, Cobalt, Black Oxide for enhanced performance
✔ Compatibility – Works with hand drills, drill presses, and CNC machines
Applications
🔹 Metalworking – Suitable for mild steel, aluminum, stainless steel (Cobalt versions recommended)
🔹 Woodworking – Ideal for softwood, hardwood, and composites
🔹 Plastic Fabrication – Works well with acrylics, PVC, and other plastics
🔹 General Construction – Used for home improvement and industrial tasks
