COBALT Jobber Twist Drill Bits (503 series)
- Industrial grade drill bit made for professionals. Precision grounded from solid construction
- Perfect for drilling in hard metal such as stainless steel, wood, and plastic
- Heavy duty, heat-treated High Speed Steel material for extended bit life and the best cutting performance
- COBALT steel finish adds an extra protective layer to make the bit drill faster and last longer
- 135° Split Point tip eliminates “wobbling/walking” by self starting and self centering the drill bit to not require center punch holes
- SPIRAL flutes allows for efficient heat, debris, and chip removal
- Round straight shank on diameters 11/64″ and under. 3 Flats shank on diameters 3/16″ and up
Please indicate the desired quantities.
Industrial grade cobalt jobber twist drill bit is perfect for heavy duty drilling in wood, plastic, hard metal, and composites. 135° split point eliminates a pilot hole and prevents walking/wobbling. COBALT steel and spiral flutes create fast cuts and makes the drill bit last longer
| Cutting Diameter (IN.) | Overall Length (IN.) | PART NUMBER | UPC NUMBER 722170- |
| 1/16″ | 1-7/8″ | 503.0464 | 50301 |
| 5/64″ | 2″ | 503.0564 | 50302 |
| 3/32″ | 2-1/4″ | 503.0664 | 50303 |
| 7/64″ | 2-5/8″ | 503.0764 | 50304 |
| 1/8″ | 2-3/4″ | 503.0864 | 50305 |
| 9/64″ | 2-7/8″ | 503.0964 | 50306 |
| 5/32″ | 3-1/8″ | 503.1064 | 50307 |
| 11/64″ | 3-1/4″ | 503.1164 | 50308 |
| 3/16″ | 3-1/2″ | 503.1264 | 50309 |
| 13/64″ | 3-5/8″ | 503.1364 | 50310 |
| 7/32″ | 3-3/4″ | 503.1464 | 50311 |
| 15/64″ | 3-7/8″ | 503.1564 | 50312 |
| 1/4″ | 4″ | 503.1664 | 50313 |
| 17/64″ | 4-1/8″ | 503.1764 | 50314 |
| 9/32″ | 4-1/4″ | 503.1864 | 50315 |
| 19/64″ | 4-3/8″ | 503.1964 | 50316 |
| 5/16″ | 4-1/2″ | 503.2064 | 50317 |
| 21/64″ | 4-5/8″ | 503.2164 | 50318 |
| 11/32″ | 4-3/4″ | 503.2264 | 50319 |
| 23/64″ | 4-7/8″ | 503.2364 | 50320 |
| 3/8″ | 5″ | 503.2464 | 50321 |
| 25/64″ | 5-1/8″ | 503.2564 | 50322 |
| 13/32″ | 5-1/4″ | 503.2664 | 50323 |
| 27/64″ | 5-3/8″ | 503.2764 | 50324 |
| 7/16″ | 5-1/2″ | 503.2864 | 50325 |
| 29/64″ | 5-5/8″ | 503.2964 | 50326 |
| 15/32″ | 5-3/4″ | 503.3064 | 50327 |
| 31/64″ | 5-7/8″ | 503.3164 | 50328 |
| 1/2″ | 6″ | 503.3264 | 50329 |