Inturned puramid shaped clamping ridges each side
No other part numbers with same form, fit, and function found.
A structural shape fabricated from a ferrous or nonferrous material and has a flange extending usually at right angles in the same direction from each edge of a web and/or resembling the letter u in cross-sectional form.
NSN 6645-01-313-3139
NSN 6110-01-295-5802
NSN 5975-01-660-0852
NSN 5910-01-184-7183
NSN 5930-00-554-9358
NSN 5935-01-423-0622
NSN 5960-01-324-1342
NSN 6685-01-421-2206
NSN 4140-01-413-1052
NSN 5960-01-283-3467
NSN 5950-01-552-3668
NSN 6145-00-257-6820