BS 3A 125 TO 3A:1981 Specification for Stiffnuts (Unified threads) for aircraft standard by BSI Group, 06/30/1981
BS 6031:1981 Code of practice for earthworks standard by BSI Group, 06/30/1981
BS 6111:1981 Specification for reference coupler for the measurement of hearing aids using earphones coupled to the ear by means of ear inserts standard by BSI Group, 06/30/1981
BS 5528:1981 Specification for operator's controls on excavators used for earth-moving standard by BSI Group, 05/29/1981
BS 1902-3.3:1981 Methods of testing refractory materials. General and textural properties. Sieve analysis (methods 1902-303) standard by BSI Group, 05/29/1981
BS 6113:1981 Method for volumetric rating of dumper bodies used for earth-moving standard by BSI Group, 05/29/1981
BS CECC 40300:1981 Harmonized system of quality assessment for electronic components: sectional specification: fixed precision resistors standard by BSI Group, 12/31/1981
BS 5000-17:1981 Rotating electrical machines of particular types or for particular applications. Machines with flameproof enclosure standard by BSI Group, 12/31/1981
BS 5550-7.5.3:1981 Cinematography. Production and presentation. Film and television location lighting. Specification for plugs and socket connectors standard by BSI Group, 12/31/1981
BS 5550-7.5.2:1981 Cinematography. Production and presentation. Film and television location lighting. Specification for location lighting power distribution units standard by BSI Group, 12/31/1981
BS 5977-1:1981 Lintels. Method for assessment of load standard by BSI Group, 12/31/1981
BS PD 6498:1981 Detail drawings for fire propagation apparatus specified in BS 476:Part 6:1981 standard by BSI Group, 12/15/1981