Yahata Neji, Plain Stainless Steel Hex Nut

JIS B 1181 compliance
The full nut complies with BS3692, the flat washer with BS4320 (M2 to M6 is Form A, M8 is Form B), the spring washer with BS4464 and the locking washer with DIN6797
The full nut complies with DIN 934, the flat washer with DIN 125 and the spring washer / locking washer with DIN 7980
The half nut complies with DIN439 Part 2, the full nut with BS3692 and the washer with BS4320