| BS1981 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981-TABLE 12 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1981PNSLUN0.250X00 | K0000 | MINISTRY OF DEFENCE UNITED KINGDOM NATIONAL CODIFICATION BUREAU UKNCB RISK MANAGERS |
| S3S14399189 | K0378 | ROLLS-ROYCE PLC |
| SPE315E6 | K0378 | ROLLS-ROYCE PLC |
| BS1981-TABLE12 | K7766 | BRITISH STANDARDS INSTITUTION |
| TABLE 12 1/4 UNC BY 3/8 IN. LG | K7766 | BRITISH STANDARDS INSTITUTION |