JAPANESE/ENGLISH VERSION
この規格は，主として自動車に使用する冷間圧造成形の，六角穴付きボルト（以下ボルトという。）について規定する。
注記 このボルトは，頭部をざぐり穴の中に埋め込む部位など，頭部周辺が狭く外側駆動の六角頭が使えな い場合に用いる。ISDフランジ付き六角ボルトよりも座面積が３割から６割小さく，強度区分に見合った軸力の確保が困難なため，標準ボルトとしての使用を順次制限し，特殊用途用として図面での運用に 移行していく予定である。
This standard covers the cold-forged steel hexagon-socket-headbolts, mainly used in automobiles (hereinafter referred to as”bolts”).
Note: The bolts of this standard are used where spacerestriction around the hexagon head refuses the tool access to theheads for driving them, such as in the case of sinking a hex headinto a spot faced recess. The bolts of this standard are smaller inthe bearing surface area than their corresponding hexagon headbolts by 30 to 60%, making it difficult to secure axial tensionappropriate for their property class; therefore, they will begradually restricted in use as standard parts and will be used asthe parts for special uses, for which drawings are issued.
- Edition:
- A
- Published:
- 02/29/2008
- Number of Pages:
- 18
- File Size:
- 1 file , 510 KB
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