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  -