STUD, SELF-CLINCHING, FLUSH HEAD, HEX CLINCH TYPE (SUPERSEDING MIL-S-63540/3) (S/S BY NASM63540/3-2000)
六角锁紧型自锁紧平头螺柱（取代MIL-S-63540/3）（由NASM63540/3-2000标准S/S）

1995-06-21

STUD, SELF-LOCKING, FLUSH HEAD, RIBBED CLINCH TYPE (SUPERSEDING MIL-S-63540/1) (S/S BY NASM63540/1-2000)
带肋铆接型平头自锁螺柱（取代MIL-S-63540/1）（由NASM63540/1-200制造）

1997-12-17

STUD, SELF-LOCKING, FLUSH HEAD, RIBBED CLINCH TYPE (SUPERSEDING MIL-S-63540/1) (S/S BY NASM63540/1-2000)
螺纹锁紧式自锁平头螺柱（取代MIL-S-63540/1）（S/S由NASM63540/1-2000提供）

1986-03-31