PBC Linear LSR1001T 0508 RS NNN NNN N Precision Lead Screw, 10 mm Screw Dia, 1 mm Lead, 508 mm Lg, Standard Nut G1630991 65 Degrees F Lubricant Color 65 Degrees F Lubricant Color Gray NSF Rating Not Rated Lubricant Additives Calcium Sulfonate Physical Form Paste Color Gray Series Marine Grade Flash Point 435 Degrees F Lubricant NSF Rating Not Rated VOC Content 0 % Standards MIL PRF 907E Application Marine App Item Marine Grade Anti Seize Specific Gravity 1 it comes with a black nylon jacket that provides insulation from moisture Nut Bolt Circle Diameter 28 003 in ft Nut Drag Torque Free Wheeling Percent Efficiency 28% Left End Components None Right End Components None Nut Dynamic Load Capacity 445 N Country of Origin United States