JIS B1170-2-1994
3型精制小六角开槽薄螺母-垫圈面表2
Type 3 fine small hexagon slotted thin nuts-washer faced-Table 2
JIS B1170-2-1994
3型小六角开槽薄螺母-垫圈面表2
Type 3 medium small hexagon slotted thin nuts-washer faced-Table 2
JIS B1170-2-2011
3型精制小六角开槽薄螺母-垫圈面表2
Type 3 fine small hexagon slotted thin nuts-washer faced-Table 2