| BODY INSIDE DIAMETER | 0.245 INCHES MINIMUM AND 0.250 INCHES MAXIMUM |
| FLANGE DIAMETER | 0.734 INCHES MINIMUM AND 0.766 INCHES MAXIMUM |
| FLANGE SEAT TO DISK END HEIGHT | 0.141 INCHES MINIMUM AND 0.172 INCHES MAXIMUM |
| HARDNESS RATING | NOT RATED BODY |
| MATERIAL DOCUMENT AND CLASSIFICATION | BS 970 416S21 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL |
| MATERIAL | STEEL CORROSION RESISTING OVERALL |
| NOMINAL THREAD SIZE | 0.625 INCHES SINGLE THREADED PORTION |
| SPECIAL FEATURES | ACF/T21:5/16IN.A/F HEX 1/4IN.DEEP FLANGE END |
| SEAL ACCOMMODATION TYPE | RECESSED |
| SEATING SURFACE SHAPE | FLAT |
| STYLE DESIGNATOR | THREADED FLANGED |
| THREAD LENGTH | 0.188 INCHES NOMINAL SINGLE THREADED PORTION |
| THREAD CLASS | 2A SINGLE THREADED PORTION |
| THREAD SERIES DESIGNATOR | UNF SINGLE THREADED PORTION |
| UNDER FLANGE HEIGHT | 0.281 INCHES NOMINAL |