Escolhendo o bit certo

Escrito Por: Richard
  • Comentários: 35
Escolhendo o bit certo

Dificuldade

Muito fácil

Passos

3

Tempo necessário

1 - 2 minutos

Introdução

A escolha do bit errado às vezes é o que difere um reparo bem-feito de um reparo sofrível ou difícil. Siga as dicas e conselhos deste guia para saber identificar corretamente os seus bits e evitar os abomináveis parafusos espanados.

Se ainda estiver tendo dificuldades com os seus parafusos depois de estudar as informações contidas neste guia, confira este fantástico guia para receber algumas dicas e conselhos sobre chaves.

  1. TQokhGKRPl4hhgJl
    TQokhGKRPl4hhgJl
    i5ET5UqEfJQlYwgh

    • Os bits de seu kit de pontas da iFixit têm prefixos gravados que indicam o modelo de cabeça do parafuso. Esses prefixos são geralmente acompanhados por um número que indica o tamanho do bit. Por exemplo:

    • PH2 - (Phillips tam. 2) Um bit Phillips grande.

    • PH0 - (Phillips tam. 0) Um bit Phillips de tamanho médio.

    • PH000 - (Phillips tam. 000) Um bit Phillips pequeno.

    • Escolha o tamanho do bit que preenche inteiramente a cabeça do parafuso. Um bit grande ou pequeno demais não se assentará adequadamente, e você irá acabar tendo um parafuso espanado.

  2. xnDnSAGsuCvjIaUs
    xnDnSAGsuCvjIaUs
    LbRmaPUZPvDApCMR

    • Se você estiver quebrando a cabeça na hora de identificar os bits de seu kit de ferramentas, sinta-se à vontade para usar esta lista de referência.

    • Formato físico do bit acompanhado do seu devido nome.

    • Tamanho do bit.

    • Se não houver nenhum prefixo gravado no seu bit, use simplesmente o nome correto inteiro e o tamanho ao empregá-lo na execução de um guia. (Por exemplo: "Com um bit de 1,5 mm com cabeça de fenda, remova os dois parafusos de 5 mm da estrutura.")

  3. COuDqcUJiEFVu2Xi
    COuDqcUJiEFVu2Xi
    r2yk4MvMdURkmOk1

    • Bits com o prefixo "J" e "PH" são muitas vezes tidos como bits idênticos. Não se engane com as suas semelhanças na aparência: eles são bem diferentes.

    • Parafusos Phillips (PH) são projetados para fazer uma chave Phillips deslizar para fora (efeito cam-out) caso seja aplicado torque demasiado. Isso evita danos a parafusos, chaves e bits.

    • Parafusos do Padrão Industrial Japonês (J) não oferecem uma opção de deslizamento (cam-out) e têm cantos em 90 graus.

    • Bits J (ou JIS) e PH (Phillips) não são sempre intercambiáveis. Como você pode ver, eles não compartilham propriedades físicas idênticas.

    which is which? why not tag each with a label?

    Jay Heldman -

    Japanese Industrial Standard (J) screws do not provide a cam-out option, and have 90 degree corners

    Oscar -

    Does a PH bit also fit into a J screw?

    Alberto -

    Hiya, Alberto! Great question. Smaller screws found in electronics aren’t particularly durable, and using a Phillips screwdriver on a Japanese Industrial Standard screw head (or vice versa) can lead to some pretty major problems. I highly recommend using the proper screwdriver or bit to avoid stripping screws.

    Richard -

    Which one should I get in America for iPhone and laptop type repairs , PH or J?

    eliyahu Stein -

    According to JIS and ISO standard, both recess dimension seem to be the same, having a rounded corner between two flats. I think, the recess without rounded corners (as right drawing) is a recess of CIPA (older JCIS) standard. According to CIPA, the edge between two flats is R0.06mm rounded shape, which seems to be neary sharp edge. Anyway, CIPA is a Japanese Standard and used mainly for the screws of Japanese electrical instruments.

    gk3lglink -

    I have two Phillips heads, one is labelled PH.2, the other labeled SH.0.

    The second one has a very snub nose, which is what I need for the screws I need to work on. The more pointed PH one is too loose as the point doesn't allow it to fully seat into the screw head.

    A seemingly identical snub-nosed one from another set is labelled: CR-V3#, and another seeming clone as ACR-2..

    I'm having a bit of confusion on how to buy another screw bit like I need.

    Guthrie -

    I have the small screwdriver kit you make. (Forgot the name) There are J1 and PH1 drivers. However, apart from the stamped label, those two especially are identical. The J1 is as rounded as the PH1 and all angles and lengths are the same. (I looked closely with a good magnifying glass.)

    There is a very visible difference between J0 and PH0. So I assume either my PH1 or my J1 has a manufacturing error.

    ̷ ̴ ̸ɢ̸ʟ̶ɪ̸ᴛ̶ᴄ̶ʜ̷ ̶ ̶ -

    Hi @glitchglitch, email support@ifixit.com to open a ticket.

    Happy fixing!

    Amber Taus -

    Great guide, but i have a question about some other bits.

    Is there a difference between the "Tri-wing" and "Tri-Point" there are two bits available at the store both designated "Y0" or are they interchangeable

    Emerson Rosa (xXNibblesXx) -

    Definitely different! You can find some more info on that here, and there's some helpful Wikipedia info here. Absolutely go for the correct fit. The potential to strip the screw head is just too great.

    Richard -

Autor(a)

Richard

Membro desde: 07/02/17

34965 Reputação

24 comentários

Excellent guide. could not figure out the difference by looking.

Lawrence Steinheuer-Turner -

It would be clearer if the displayed drawing of each bit actually said J-bit or PH-bit, and because both have 90 degree corners, maybe change the J-bit description to “have 90 degree square inside corners“ and include in the PH description “have 90 degree rounded inside corners.

Otherwise, with interpretation, your article helped me.

Phil -

what size hex shaft do these smaller bits have?. i have an electric precision screw driver, for electronics. i go through the PH1 bits very quickly. i can NOT find them for sale anywhere on earth. does anybody know where to purchase these things?? and/or tell me how i should word the query. all im getting is 1/4 hex shaft results. very frustrating

brett everett -

4mm bit size

Anthony Cole -

Ifixit warranty covers replacement bits

Just message their support email

Ash -

In the picture on the top of the page the bits with a 90° corner are marked as Phillips heads, the ones with the rounded corners are markes as JIS heads. But it seems to be the other way, as mentioned in Step 3 of this instruction, and also according to other pages like https://eustore.ifixit.com/products/phil...

Andreas Brunner -

Sharp eye, Andreas! Thanks for catching that. We’ve updated the image at the top of the guide with the correct labels.

Marty Rippens -

Right on the money there! 👍

Ross McPherson -

i have just bought an ifixit kit, has some ph and j bits. I’ve looked at them under a microscope, compared angles, tried them on screws... i have found no difference whatsoever, they seem to be identical. What gives?

Victor Titov -

Hi @deepsoic, that’s a pretty interesting find you’ve made! Send an email over to our customer service team at support@ifixit.com and they’ll help you get this issue sorted.

Amber Taus -

The label indicating the drivers on the Mako 64-bit driver set is almost impossible to read (embossed black-on-black). You can print a better one from the diagram on the catalog page. See https://twitter.com/isonno/status/146455...

isonno -

I got this set as a gift and I’m very disappointed it doesn’t include larger Phillips head bits. The largest in this set is too small for a lot of the screwheads on my electronics, especially since I’ve never seen some of these screwheads in my entire life. Do you have any larger Phillips bits for sale?

Matt -

Hi, Matt! Sorry to hear that your current kit doesn't meet your needs. We do have a larger 1/4" driver kit that goes up to PH #3 (Mahi).

Richard -

Where does pozidriv (PZ) fit in. I know its not Phillips, so seem to be another bit type?

Alan -

Probeer de volgende link eens: https://shop4fasteners.co.uk/blog/pozidr...

Misschien wordt het dan duidelijker.

Toon Konings -

Il manque (cruellement) l'empreinte POZIDRIV souvent source de confusion.

Roland29 -

I think the English information about jis may be wrong and outdated. I google Japanese,旧JISネジ vs iso ，Statement from Vessel,ねじにある丸い刻印「ISOマーク」 "point"screws are rare in Japan now. "point"means new jis/ISO(only M3/4/5) ， "no point" is old jis in japan in 1960'， The difference is the "screw pitch". and new JIS B 4633 screws also no point. only ISO 8764. You can test pb/wiha/wera/vessle with your jis screw, it won't make a difference.

sean zhang -

What are philips #1,2 & 3 sizes? Are they different in thickness? Can Philips #1 Screwdriver be used on any Phillips screws?

Amit ghosh -

A Phillips screwdriver has a head with pointed edges in the shape of a cross, which fits neatly into the cross slots of a Phillips screw. Phillips screwdrivers are available in five different sizes, from zero to four. If you don’t use the right size, you can easily strip a Phillips screw, making it difficult to remove.

Toon Konings -

Das sagt mir nicht welcher BIt für Kreutzschlitz 2,2- 3,5 mm ich benötige. Für mich völlig wertlos. Wird jetzt ein 000.00,0,oder 1,2, gebraucht?

Gerd Schaper -

I need to buy individual replacement screwdriver bits like I used to without buying the whole thing again.

James Hanlon -

Looking for Torx Plus IP3. Can see as part of kit with ssd but not otherwise. Where can I find/buy on its own. Looking all over, v frustrating

M Sweeney -

Not only is the information superb, it's provided in a dynamic and well laid out manner

Mister HallowWeen -

I've lost the "Magnetic Pickup Bit" for my iFixit Mako Precision bit set. The replacement part is out of stock, any idea when it's likely to be back in stock please?

Craig Whitmore -