TY - RPRT TI - Screw-thread standards for federal services 1957. Part III: Acme, stub Acme, and buttress threads, rolled threads for screw shells of electric lamp holders and unassembled lamp bases, microscope objective and nosepiece threads, surveying instrument mounting threads, photographic equipment threads, ISO metric threads; miscellaneous threads, class 5 interference-fit threads, trial standard, wrench openings PY - 1960 PB - National Bureau of Standards CY - Gaithersburg, MD SN - NBS HB 28supp1957pt3 DO - 10.6028/NBS.HB.28supp1957pt3 ER -