How strong does a wrench need to be? How long does it take for a screw to break? I actually tried it
Вставка
- Опубліковано 14 жов 2022
- Snap-on
1/4 inch (6.35mm)
THLX72
Number of gear teeth: 72, swing angle: 5°
Recommended maximum torque 38N-m
snap-on
1/4 recommended maximum torque is approximately 38N-m
Recommended maximum torque for 3/8 is approximately 108N-m
The complexity of the 1/4 set is
Approximately 13mm to 15mm
The thickness of a bolt with a width across flats of 13 mm is 8 mm.
HAZET 8816HP Maximum torque 400N-m
3/8 inch torque wrench up to about 135N-m
The width across flats of bolts commonly used with 3/8 is up to about 19mm.
Generally up to 22mm to 24mm for intricate designs.
car wheel nuts
Approximately 17mm to 21mm width across two sides
The thickness of the screw is about 10mm to 14mm.
Barely defensive range?
The thread thickness of the 19mm bolt is 12mm.
HAZET 916HPLG Maximum torque 1000N-m
...1000 new tones!
That's a bit hard to believe, but...
Even if it is a large furoshiki, this is an amazing number.
1/2 inch torque adapter
Approximately 200N-m ~ 340N-m
In the complicated 1/2 inch set product
Up to about 32mm wide across two sides
The thickness of a screw with a width across two sides of 24 mm is 16 mm.
How strong does the wrench need to be?
Strong enough to break off a bolt
I guess I don't need it...
How much force can a bolt break?
I looked it up
M5 (screw thickness 5mm) Width across flats 8mm
Strength classification 4.8
It broke with 8.2N-m.
8mm is overtorque
It's thick enough that I tend to get it wrong.
M6 (screw thickness 6mm) Width across flats 10mm
Strength classification 4.8
It broke with 23.4N-m.
I wonder if I want this much strength even with 1/4?
M6 (screw thickness 6mm) Width across flats 10mm
Strength classification 7T (8.8)
Often seen on motorcycles and cars
flange bolt
The bolt with the 7 stamp gives it a strong impression.
It broke with 33.9N-m.
Recommended maximum torque for 1/4 snap-on is 38N-m
If it is 1/4, is the width of the 7 stamped screw up to about 10 mm across two sides?
If you can blow away 10mm marked 7
It seems like it's pretty good
M8 (screw thickness 8mm) Width across flats 13mm
Strength classification 4.8
It broke with 31.6N-m.
8M with strength classification 4.8
Can you break it even with 1/4?
M8 (screw thickness 8mm) Width across flats 12mm
Strength classification 4.8 (unmarked)
The strength classification of screws without markings is
It seems to be about 4.8
It broke at 30.2N-m.
8mm thick screws on motorcycles and cars
It seems that there are many screws with a width of 12mm on two sides.
M8 strength class 4.8
Width across two sides: 12mm or 13mm
1/4 Ratchet engagement up to 13mm
I feel like it makes sense somehow
M8 (screw thickness 8mm) Width across flats 12mm
Strength classification 7T (8.8)
It broke with 85.9N-m.
Strength classification 7T (8.8) 85.9N-m
More than twice the strength of unmarked (4.8) 30.2N-m
7T (8.8) items are expensive though
It was stronger than I expected
M10 (screw thickness 10mm) Width across flats 14mm
Strength classification 4T (4.8)
10mm is quite thick.
Width across two sides: 13mm to 14mm
Thickness 8mm to 10mm
From 1/4(6.35mm) to 3/8(9.53mm)
It feels borderline
It broke with 64.9N-m.
snap-on
1/4 recommended maximum torque is approximately 38N-m
Recommended maximum torque for 3/8 is approximately 108N-m
Even with Snap-on, M10 is 1/4
It seems to be thick enough that you need to be careful.
M10 (screw thickness 10mm) Width across flats 14mm
Strength classification Unmarked (4.8)
It broke with 56.3N-m.
Slightly weak?
I tried a few
It seems to go up and down by about 10%.
M10 (screw thickness 10mm) Width across flats 17mm
Strength classification 4.8
It broke with 64.8N-m.
3/8 ratchet wrench
Bolts with a thickness of 10 mm and a strength class of 4.8
Do you feel like you're not strong enough if you can't break it off?
M10 (screw thickness 10mm) Width across flats 14mm
Strength classification 7T (8.8)
Ngo!
It broke at 132.6N-m.
snap-on
Recommended maximum torque for 3/8 is approximately 108N-m
A 3/8 inch torque wrench is about 135N-m.
With 3/8 ratchet
M10 7T(8.8) 14mm width across flats bolt
It seems to be thick enough that you need to be careful.
M12 (screw thickness 12mm) Width across flats 19mm
Strength classification 4.8
It broke with 120.9N-m.
Is 1/2 good for M12 width across 2 surfaces of 19mm?
My impression is that 3/8 is up to 19mm.
M16 (screw thickness 16mm) Width across flats 24mm
Strength classification 4.8
I tried my best to reach around 250N-m.
I couldn't break it off
Due to character limit, I could not post the entire text.
Please Google translate the summary part from Japanese. - Авто та транспорт
ホームセンターで売ってる無印のボルトはヤバイですね。怖！！
バイクとかで使うのは止めときます。
参考になりました～。
無印は意外な結果でした・・・個体差も結構あって・・・強度を書いていないネジは、強度を保証できないってことなのかもしれません。
ストレートさんのセットのグランジボルトとかも
無印なのですが、調べて見たいと思っています。
無印は安いので使えれば助かりますが・・
どのくらいの強度なのかを把握して、
使い所に注意する必要があると思います。
高級工具そろえてますね、、Hazetとかドイツ高級工具
実にドイツらしい質実剛健ですね。あんなに力掛けれるとは、、1000ニュートンですよ
ヤバイ過ぎるでしょ⁉️
ソケットは、、どこのメーカーだろうか？
TONEぽいけど？
コメントありがとうございます。
HAZET(ハゼット)の1/2は通常の使い方では壊せないラチェットだと思いました～（笑）～
ソケットはトネ(TONE)さんを始めいろいろなソケットで試しましたが、ネジの強度に耐えられないソケットは一個もありませんでした。
肉薄の特殊なソケット以外は、通常の使い方ならネジに負けることはないかな～っ。
参考にしてください。
お疲れ様でした！物凄く参考になりました。
ちょうど3/8ヘッド1/2ドライブの古いスナップオン ラチェットをテーブルでメンテしてたのでかなりタイムリーなネタでした。
勢い余ってショートソケットはインチとミリ全サイズ揃えてしまったので16mm5/8インチ以下の小さい1/2ソケットを全然使ってないから出番増やそう作戦ですw
スナップオン ソケットの場合、1/4と3/8の肉厚(外径)がほとんど変わらないのでソケットの高さで選んでラチェットを決める感じか、sq側の方が太くなるのが3/8は12mm以下なので、そういった面でも13mmが目安になるのは覚えやすいですね。1/2はソケット自体に厚みが出てしまいますが15mmあたりからsq側が太くなりますから16mm以上で強度のあるボルトナット弄るなら1/2をチョイスするって考えると最近流行りのヘッドの小さいラチェットが生きてきますよね。
ミリサイズソケットだとイメージ湧きませんがインチサイズで考えると13mmは1/2に近く、16mmは5/8に近いのでなるほどなぁと思いました。
コメントありがとうございます
工具をあれこれいじりながら色々考えてる時間は
楽しい時間ですよね～
1/4ｲﾝﾁ (6.35㎜)なんだから６㎜ぶっちぎれればいいんじゃね～みたいな思いつきで、
本締めNGとかどのくらいまでOKなのかな～～的な疑問。
OKラインがわかれば安くても使える工具を見つけられやすくなるんじゃないかな～～的な企画でした。
今後はこの大体基準で安くても使える工具を調べたいと思っています。