| Maryland Metrics Technical Data Chart | ||||||||||||||
| DIAMETERS AND PITCHES | ||||||||||||||
| SHEET METAL SCREWS | SCREWS FOR PLASTICS | |||||||||||||
| FINE | COARSE | JIS(CLASS #) | ORIGINAL | DURO | ||||||||||
| ISO/USA | ST | (AB) | (A) | JIS(1) | JIS(2/4) | JIS(3) | EJOT | (PT) | DURO | (PT) | ||||
| DIAM. | DIAM. | PITCH mm | PITCH mm | PITCH mm | PITCH mm | PITCH mm | DIAM. | PITCH mm | DIAM. | PITCH mm | ||||
| - | 1.8 | K18 | 0.8 | |||||||||||
| - | 2 | 0.63 | 0.4 | |||||||||||
| #2 | 2.2 | 1.26 | K22 | 0.98 | K22 | 0.71 | ||||||||
| - | 2.5 | 0.91 | 0.45 | K25 | 1.12 | K25 | 0.77 | |||||||
| #4 | 2.9 | 1.06 | ||||||||||||
| - | 3 | 1.06 | 1.06 | 0.5 | K30 | 1.34 | K30 | 0.86 | ||||||
| #6 | 3.5 | 1.27 | 1.41 | 1.41 | 1.27 | 0.6 | K35 | 1.57 | K35 | 0.95 | ||||
| #7 | 3.9 | 1.59 | ||||||||||||
| - | 4 | 1.59 | 1.41 | 0.7 | K40 | 1.79 | K40 | 1.04 | ||||||
| #8 | 4.2 | 1.41 | 1.69 | |||||||||||
| - | 4.5 | 1.81 | 1.59 | 0.75 | ||||||||||
| #10 | 4.8 | 1.59 | 2.12 | |||||||||||
| - | 5 | 2.12 | 1.59 | 0.8 | K50 | 2.24 | K50 | 1.23 | ||||||
| #12 | 5.5 | 1.81 | 2.31 | |||||||||||
| - | 6 | 2.54 | 1.81 | 1 | K60 | 2.69 | K60 | 1.42 | ||||||
| #14 | 6.3 | 1.81 | 2.54 | |||||||||||
| 1/4" | 1.81 | |||||||||||||
| - | 7 | K70 | 3.14 | |||||||||||
| 5/16" | 2.12 | |||||||||||||
| - | 8 | 2.82 | 2.12 | 1.25 | K80 | 3.59 | K80 | 1.79 | ||||||
| 3/8" | 2.12 | |||||||||||||
| - | 10 | K100 | 4.49 | |||||||||||
| #20 | 2.82 | |||||||||||||
| #24 | 2.82 | |||||||||||||
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