不含滾珠軸承、滑動軸承或滾柱軸承的單件或多件式組件。其設計旨在滿足各種或特定的安裝條件。對於帶有軸承的組件,請參閱滾珠軸承單元;滑動軸承單元;以及滾柱軸承單元。
steel comp e4340 housing material, c5 aircraft end item identification, mil-s-5000 cond e-4 mil spec single material response housing material document and classification, 0.9375 inches minimum and 0.9384 inches maximum bore diameter