Sockets 12.7mm – 1/2″ Square Drive (Flank Drive)

Generally Conforming to IS 6131-1980 & 7381-1986

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  HEXAGONAL & BIHEXAGONAL
  PROD. NO.	FIG. NO.	A	B	C	ΘD	ΘE	A/F	WT. GMS
  8	1	36	20	16	12.0	22	8	45
  9	1	36	20	16	13.0	22	9	45
  10	1	36	20	16	16.0	22	10	45
  11	1	36	20	16	17.5	22	11	48
  12	1	36	20	16	18.7	22	12	50
  13	1	36	20	16	20.0	22	13	52
  14	1	36	20	16	21.3	22	14	52
  15	2	36	–	–	22.5	–	15	52
  16	2	38	–	–	23.5	–	16	52
  17	2	38	–	–	25.0	–	17	75
  18	2	38	–	–	25.5	–	18	70
  19	2	38	–	–	27.5	–	19	90
  21	2	40	–	–	28.9	–	21	104
  22	2	40	–	–	31.0	–	22	125
  23	2	40	–	–	31.3	–	23	120
  24	3	43	18	25	32.5	30	24	130
  26	3	43	18	25	35.2	30	26	140
  27	3	43	18	25	36.4	30	27	150
  28	3	43	18	28	37.7	30	28	165
  29	3	46	18	28	38.9	30	29	165
  30	3	46	18	28	40.4	30	30	185
  32	3	46	17	29	42.7	30	32	195
  33	3	46	17	29	43.9	30	33	195