Sae 4-bolt straight threaded in-line flange is a code 61 series
No other part numbers with same form, fit, and function found.
An item solid or split into halves, having a threaded or unthreaded hole for the purpose of connecting or retaining a pipe, tube, or hose fitting. The face of the flange may be smooth, grooved, or serrated and may be drilled for connecting bolts or studs. If the item is unthreaded, the pipe or tube may be retained by welding, brazing, compression, or the like. Excludes flange, pipe, blind; ferrule, grooved clamp coupling; and adapter (as modified).
Classification: Flanges of iron or nonalloy steel
NSN 5930-01-551-1123
NSN 5925-00-051-4892
NSN 5985-00-497-9215
NSN 6150-01-027-1693
NSN 5915-01-269-2587
NSN 5930-00-273-0778
NSN 5935-01-041-9179
NSN 5915-01-446-5028
NSN 5910-00-779-6007
NSN 5975-00-913-1242
NSN 6610-01-504-3658
NSN 6240-01-387-3610