Establishments primarily engaged in manufacturing cutting tools, machinists'precision measuring tools, and attachments and accessories for machine tools and for other metalworking machinery, not elsewhere classified. Establishments primarily engaged in manufacturing handtools, except power-driven types, are classified in Industry Group 342.
| Angle rings | Honing heads |
| Arbors (machine tool accessories) | Hopper feed devices |
| Bits for use on lathes, planers, shapers, etc. | Inserts cutting tool |
| Blanks, cutting tool | Knives shear |
| Boring machine attachments (machine tool accessories) | Lathe attachments and cutting tools (machine tool accessories) |
| Broaches (machine tool accessories) | Letter pins (gauging and measuring) |
| Calipers and dividers | Machine knives, metalworking |
| Cams (machine tool accessories) | Machine tool attachments and accessories |
| Chasers (machine tool accessories) | Mandrels |
| Chucks: drill, lathe, and magnetic (machine tool accessories) | Measuring tools and machines, machinists' metalworking type |
| Clamps, machine tool | Micrometers |
| Collars (machine tool accessories) | Milling machine attachments (machine tool accessories) |
| Collets (machine tool accessories) | Precision tools, machinists' |
| Comparators (machinists' precision tools) | Pushers |
| Counterbores, metalworking | Reamers, machine tool |
| Countersinks and countersink drill combinations (machine tool | Scales, measuring (machinists' precision tools) |
| Cutters, milling | Shaping tools (machine tool accessories) |
| Cutting tools and bits for use on lathes, planers, shapers, etc. | Shear knives |
| Diamond cutting tools for turning, boring, burnishing, etc. | Sockets (machine tool accessories) |
| Diamond dressing and wheel crushing attachments | Tables, rotary: indexing |
| Dies, thread cutting | Taps, machine tool |
| Dressers, abrasive wheel: diamond point and other | Threading toolholders |
| Drill bits, metalworking | Threading tools (machine tool accessories) |
| Drill bushings (drilling jig) | Tips, cutting tool |
| Drilling machine attachments and accessories (machine tool | Toolholders |
| Drills (machine tool accessories) | Tools and accessories for machine tools |
| Files, machine tool | Verniers (machinists' precision tools) |
| Gauge blocks | Vises, machine (machine tool accessories) |
| Gauges, except optical (machine tool accessories) | Wheel turning equipment, diamond point and other (machine tool |
| Hobs | |
| Codes |
Titles | Total Marketable US Businesses |
| 35450000 | Machine tool accessories | 537 |
| 35450100 | Precision measuring tools | 66 |
| 35450101 | Calipers and dividers | 4 |
| 35450102 | Comparators (machinists' precision tools) | 8 |
| 35450103 | Gauge blocks | 6 |
| 35450105 | Measuring tools and machines, machinists' metalworking type | 35 |
| 35450106 | Micrometers | 3 |
| 35450107 | Precision tools, machinists' | 195 |
| 35450108 | Scales, measuring (machinists' precision tools) | 30 |
| 35450109 | Verniers (machinists' precision tools) | 1 |
| 35450200 | Cutting tools for machine tools | 365 |
| 35450201 | Counterbores, metalworking | 0 |
| 35450202 | Countersinks and countersink drill combinations | 0 |
| 35450203 | Diamond cutting tools for turning, boring, burnishing, etc. | 88 |
| 35450204 | Dressers, abrasive wheel: diamond point or other | 5 |
| 35450205 | End mills | 6 |
| 35450206 | Files, machine tool | 7 |
| 35450207 | Hobs | 3 |
| 35450208 | Machine knives, metalworking | 10 |
| 35450209 | Milling cutters | 6 |
| 35450210 | Reamers, machine tool | 4 |
| 35450211 | Shear knives | 6 |
| 35450212 | Taps, machine tool | 9 |
| 35450213 | Thread cutting dies | 8 |
| 35450214 | Threading tools (machine tool accessories) | 9 |
| 35450215 | Wheel turning equipment, diamond point or other | 2 |
| 35450300 | Machine tool attachments and accessories | 119 |
| 35450301 | Angle rings | 4 |
| 35450302 | Arbors (machine tool accessories) | 5 |
| 35450303 | Balancing machines (machine tool accessories) | 15 |
| 35450304 | Bits for use on lathes, planers, shapers, etc. | 1 |
| 35450305 | Boring machine attachments (machine tool accessories) | 13 |
| 35450306 | Broaches (machine tool accessories) | 27 |
| 35450307 | Cams (machine tool accessories) | 7 |
| 35450309 | Chucks: drill, lathe, or magnetic (machine tool accessories) | 24 |
| 35450310 | Collars (machine tool accessories) | 4 |
| 35450311 | Collets (machine tool accessories) | 8 |
| 35450312 | Diamond dressing and wheel crushing attachments | 4 |
| 35450313 | Drill bits, metalworking | 22 |
| 35450314 | Drill bushings (drilling jig) | 10 |
| 35450315 | Drilling machine attachments and accessories | 23 |
| 35450316 | Drills (machine tool accessories) | 19 |
| 35450317 | Gauges (machine tool accessories) | 84 |
| 35450318 | Headstocks, lathe (machine tool accessories) | 1 |
| 35450319 | Honing heads | 2 |
| 35450320 | Hopper feed devices | 5 |
| 35450321 | Mandrels | 6 |
| 35450322 | Milling machine attachments (machine tool accessories) | 11 |
| 35450323 | Pushers | 85 |
| 35450324 | Rotary tables | 2 |
| 35450325 | Shaping tools (machine tool accessories) | 4 |
| 35450326 | Sockets (machine tool accessories) | 5 |
| 35450327 | Tool holders | 22 |
| 35450328 | Tools and accessories for machine tools | 151 |
| 35450329 | Vises, machine (machine tool accessories) | 5 |
