TallOne1113
Chemical
- Jan 28, 2010
- 10
Anyone ever come across an ASTM D2000 line call out as follows: 5BC415SA14B14C12F19K11. 5BC415 I understand; A14, B14, etc., I understand. The S between 5BC415 & A14 is throwing me. It's on an old Naval Sea Systems Command print for a flapper valve from 1978. It may be a typo but I know the D2000 spec has undergone many changes since 1978. Any info is appreciated. Thanks.