Special Features:

Inside diameter of tube 4.502 in; thk 0f flange 0.470 in; tube length unassembed 18.568 in; tube length assembled 20.158in; dim include chemical or plated finishes only; must be gas tight to 40 psig; finish: no. 90 grit alum oxide shotblast all exterior surfaces except areas marked nc: iron phosphate coat per tt-c-490.Mthd 1, type 2: coat all exterior surfaces including bolt holes using primer p coating pretreatment and nylon coating type 2 plastonic matl no.107, .010 to .015 thk: color, olive drab per, fed-std-595, color chip no.1406 (gloss) except areas marked nc: after coating, glass bead abrasive shot blast, size ms-ml over area marked s; spillover acceptable in areas marked sp

Properties:

Two or more different types of items having a common mounting or mounted on each other which together form a portion of a periscope subassembly but which in itself is not a complete functioning item and cannot be assigned a more definite item name.