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2.880in. and 2.890in. ⁓2-57/64"
4.000in.
0.245in. and 0.255in.
63.0 microinches inner
steel
astm A515, grade 55 assn std single material response or B4A8a, fscm 01289 mfr ref single material response
convex
1EA
Convex
Steel
0.245 inches minimum and 0.255 inches maximum
4.000 inches
2.880 inches minimum and 2.890 inches maximum
Schedule B number: 7318220000
nmfc 194160
Washers other than lock washers, iron or steel
FSC 5310 ⁓ Nuts and washers
Note-nuts and washers, including specially designed, are to be classified in this fsc. a. nuts are a small metal block made in a variety of shapes such as square and hexagonal which is drilled and internally threaded. b. washers are a perforated piece of metal, leather, or other materials of various shapes or forms. they are used primarily as a seat for a bolt, nut, screw, rivet or nail to distribute pressure and prevent endwise motion over an area and/or to prevent movement between two parts by means of restraining features created by the shape of its edges.
Excluding bearing thrust washers (fsc 3120); shims (fsc 5365); ring spacers (fsc 5365); plate spacers (fsc 5365); lock rings (fsc 5365).
convex 0.245" material thickness 4.000" outside diameter 2.880" hole diameter
Nothing similar to this part number was found in our inventory
A washer which is round with a centrally located hole. one bearing surface is smooth, flat, and unbroken, the other bearing surface is smooth, unbroken, and is raised to form a curved or spherical contour. see also washer (1), concave. excludes bearing, washer thrust.