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| Grip length
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Length of the nail or other fastener that penetrates the material on which it is used. |
| Grit
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Rough, hard, abrasive particles of sand or stone. |
| Grit number
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Scale to grade coarseness of abrasives; the finer the grit, the higher the number. |
| Groin
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(1) The sharp, curved edge, which is formed at the junction of two intersecting vaults in a structure. (2) The rib of wood or stone, which covers the edge. |
| Grommet
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(1) An eyelet that protects and reinforces an opening in a fabric or metal. (2) Insulation needed to protect electrical wiring when it passes through a hole in a metal plate. |
| Groove
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(1) A long, narrow furrow cut into a surface. (2) Any channel or rut cut or worn into a surface. |
| Groove angle
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Total combined angle made by the sides of weld preparation bevels on pieces adjoining each other. |
| Groove joint pliers
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Joint adjusts to hold objects of different sizes while teeth on surface grip tight so object won't slip. |
| Groove weld
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Between two parts, the shaped edges form a groove for the deposit of weld metal. |
| Grooved fitting
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A gasketed mechanical pipe fitting made of ductile iron that is clamped onto a groove in a pipe rather than screwed onto threads. It is mostly used in commercial applications on pipes larger than 1 1/2" in diameter. |
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