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三三 2013.01.19 maksgym Trivia about Bolts, Nuts & Gaskets (BNPK のののの ) No. Description 1 三三三三三三三三三三三三三 三三三三三三三 三三三三三三三 ・、 三三三三三三三三三三三三三三三三三三三三三三三三 三三三三 三三三三三三三三三三三三三三三三三三三三三Hot Dipped Galvanized Bolt and Nut (1) 1. As to the hot dipped galvanized b and nut which are supplied as one pair, there is no need of the additional m a c h i n i n g f o r t h r e a d m a n u f a c t u r e r s u p p l i e s after connecting them. 2. However, if considering the case tha only the dipped galvanized bolt supplied, it means that those bolts are used for the tapped holes. Therefore, t h e a d d i t i o n a l m a c r e q u i r e d a f t e r g a l v a n i t h i s case. 2 三三三三三三三三三三三三三 三三三三三三三三 三三三三三三 ・、 三三三三三三三三三三三三三三三 三三三三三三三三三三三三三 三三三三三三三三三三三三三三Hot Dipped Galvanized Bolt and Nut (2) In case of the hot dipped galvanized bolt a n d n u t , t h e n u t w h i c dimension of thread is used so that t hot dipped galvanized bolt and nut can be connected without problem. 3 三三三三三三三三 三三三三三三三三三三三三三三 三 三 三 6、10mm 三三三三三三三 三三三三三三三三三三三三三三 三三三三三三 。。 三三三三三三三三三三 Standard Length of Hexagon Bolt As to the hexagon bolt, th standard length** of bolt is as follows: 1) L e n g t h u p t o 1 0 0 m m 15mm,20mm...90mm, 95mm, 100mm 2) L e n g t h o v e r 1 0 0 m m : 130mm, 140mm...... In case of the threaded rod, there is not the standard length as abovementioned. (Note) standard length** : The bolt length which is available as commercial product. 4 三三三三三三三三三三三 三三三三三三三三 三三三三三三三三 () 三三三三 三三三三三三三三三 三三三三 三三三三三三三三三三 (R(; 三三三三三三 三三三三三三三三三三三三三三三三 三三 )+() 三三三三三三 三三三三三 三三三三三三三三 ・、。 Foundation Bolt specified by Nippon Steel Corporation versus Chemical Anchor Set (a) Foundation Bolt specified by NSC 三三三 三三三三三 【】、 Trivia about Bolts, Nuts & Gaskets.doc 1

【豆知識】ボルト ナット&ガスケット Trivia About Bolts Nuts & Gaskets

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Page 1: 【豆知識】ボルト ナット&ガスケット Trivia About Bolts Nuts & Gaskets

三木 悟2013.01.19 maksgym

Trivia about Bolts, Nuts & Gaskets (BNPK の 豆 知 識 )

No. Description

1 ドブ漬け亜鉛メッキのボルト・ナットの場合、ナットと対になっていないボルトは相手がタップ穴の場合になるので、ドブ漬け亜鉛メッキ処理後にネジ部の加工が必要となる。

Hot Dipped Galvanized Bolt and Nut (1)

1. As to the hot dipped galvanized bolt and nut

which are supplied as one pair, there is no

need of the additional machining for thread,

because the manufacturer supplies bolt and

nut after connecting them.

2. However, if considering the case that only

the dipped galvanized bolts are supplied, it

means that those bolts are used for the

tapped holes. Therefore, the additional

machining will be required after galvanizing

in this case.

2 ドブ漬け亜鉛メッキのボルト・ナットの場合は、ナットをドブ漬け亜鉛メッキ用のナットがあり、勘合時に問題が出ないように大きめのネジ寸法となっている。

Hot Dipped Galvanized Bolt and Nut (2)

In case of the hot dipped galvanized bolt and nut,

the nut which has larger dimension of thread is

used so that the hot dipped galvanized bolt and

nut can be connected without problem.

3 6角ボルト材料は、サイズが大きくなると長さが10mm単位でしかない。それ以外の寸法は特殊となる。頭なしのずん切りボルトは関係なし

Standard Length of Hexagon Bolt

As to the hexagon bolt, the standard length** of

bolt is as follows:

1) Length up to 100mm : 10mm, 15mm,20mm ...90mm, 95mm, 100mm

2) Length over 100mm: 110mm, 120mm, 130mm, 140mm ......

In case of the threaded rod, there is not the

standard length as abovementioned.

(Note)

standard length**: The bolt length which is

available as commercial product.

4 新日鐵仕様の基礎ボルト(異形棒鋼タイプ)とケミカルアンカーセット(ケミカルアンカーRタイプ(日本デコラックス製;武田産業取扱)+全ネジボルト(先端斜めカット)・ナット・ワッシャー)の価格は、ほぼ同じである。

Foundation Bolt specified by Nippon Steel

Corporation versus Chemical Anchor Set

(a) Foundation Bolt specified by NSC

: Deformed Steel Bar + nut & washer

(b) Chemical Anchor Set

: Chemical Anchor R type + Thread Rod (one

【豆知識】ボルト、ナット&ガスケット Trivia about Bolts, Nuts & Gaskets.doc 1

Page 2: 【豆知識】ボルト ナット&ガスケット Trivia About Bolts Nuts & Gaskets

新日鐵仕様基礎ボルト(M16× 400L);約650円/1本ケミカルアンカーセット(M16×

250L);約700円/1セット

side end is cut diagonally) + nut & washer

The price of two types in the above are almost

same as follows:

1. Foundation Bolt specified by NSC:

: M16 x 400L, about 650 yen/one set

2. Chemical Anchor Set

: M16 x 250L, about 700 yen/one set

5 リングガスケットの外径(D)と内径(d)

リングガスケットの外径(D)は、フランジボルトのPCDからボルトサイズ分を差し引いた寸法となるリングガスケットの内径(d)は、フランジボルトがフランジボルト穴の一番外側に取り付いた状態でも配管内にガスケットがはみ出ない寸法となる

Outside Dia. (D) and Inside Dia. (d) of Ring

Gasket

1.Outside Dia. (D) of Ring Gasket

D = “PCD of Flange” - “Size of Flange Bolt”

2. Inside Dia. (d) of Ring Gasket

Inside Dia. (d) is to be the dimension which the

inner side of the ring gasket does not stick out

to inside of the pipe at the condition when the

flange bolt contacts with the bottom of the bolt

hole of the flange.

6 製作納期についてM24以下は、特殊ボルトでない限り納期約1週間(材料在庫)M27以上は、材料の在庫もない状態と考えられるので一からの製作となる。納期は約3週間~1ヶ月を考えておくこと

Delivery Time

1. Bolt smaller than M24

Delivery time is about one week if the bolt is

not special specification (Because, bolts are

stocked.)

2. Bolt larger than M27

Deliver time is considered to be about three

weeks to one month because the required

bolt will be manufactured newly.

7 ボルト締付トルクボルトの締付トルクを上げる場合(緩み防止)の方法として、材質変更がある。・SS400 → SCM435*注意事項として、ナット(タップ穴)側の材質についても注意が必要で、SS材では問題とならないが、FC材の時は母材損傷の可能性あり。

Tightening Torque of Bolt

The tightening torque of bolt can be increased by

changing the material of the bolt:

For example:

SS400 → SCM435

(Note)

In this case, pay attention to the material of nut

and the base metal for tapped hole.

In case that the base metal for tapped hole is FC,

there is a possibility that the base metal will be

damage due to the strength difference of

materials between bolt and nut.

【豆知識】ボルト、ナット&ガスケット Trivia about Bolts, Nuts & Gaskets.doc 2