5970-00-280-8853 (MIL-I-23264/3)
NSN 5970-00-280-8853 (NIIN 00-280-8853) is a standoff insulator in Federal Supply Class 5970, Electrical Insulators And Insulating Materials — an insulator which is specifically designed to support a conductor or an item at a predetermined spacing from a mounting surface. Manufacturer part number MIL-I-23264/3 (Military Specifications, CAGE 81349); also referenced as NL522W19-011 (Military Specifications).
Key specs: 249 V per MIL /0.001 in/ dielectric material voltage per unit thickness; full characteristics table below. NIIN assigned January 1963; DEMIL A (none required); unit of issue EA (each), $1.88 gov standard price; export Schedule B 8546.90.0000. Related NSN 5970-00-117-4938, 5970-00-644-3047.