NYLOCK NUT HEXAGONAL SIZE M- 12, S. S.- 304 CLASS- A2- 70. MATERIAL SPECIFICATION: DIN 982 PROPERTY MATERIAL AISI304, IS: 7002/ ' 05,, IS: 1367 ( PT. 14 )/ ' 84, REV. 2, WITH AMND.- 1 OR LATEST. AS PER UNBRAKO PART NO.: 5010320. AS PER SPEC. RDSO/ PE/ SPEC/ AC/ 0080- 2007 Rev. 2 OR LATEST ACCEPTED MAKE: UNBRAKO, TVS, LPS or any other RDSO/ PUs approved make hardware shall be used.