关于3/8-24 UNF-2A-MOD 螺丝图纸的一些要求，先谢了。

zhaogang1966

   经典图书

ALLUNSPECIFIEDDIMENSIONSANDREQUIREMENTSASPUBLISHEDINCURRENTIFISTANDARDS.所有未注明的尺寸参照最新版的IFI标准。
.3509PITCHDIA.,.3460AFTERFINISH.磨光后螺距，直径
3/8-24UNF-2A-MOD.,.003OVERSIZE.加大型（扩孔螺帽）
PENETRATIONDEPTH:.174-.196.有效深度
SCREWPOINTDESIGNFORTHREADCLEARINGUSE.
SCREWMATERIAL:SAE1022螺钉材料：ＳＡＥ１０２２
HEATTREATMENT:CASEHARDEN热处理：渗碳硬化
COREHARDNESS:R”C”28-38心部硬度
FINISH:BLACKE-COAT成品：黑色，电泳
CASEHARDNESS:R”C”45MIN渗碳硬度
SCREWTYPE:THREADCHASINGSCREW螺丝类型车削螺纹

mjtppf

这种美制细牙螺纹好不好加工？是不是一般加工厂都能做到？

zhoulinfeng

   经典图书

这种美制细牙螺纹好不好加工？是不是一般加工厂都能做到？

baokaiyun

我觉得“MOD“能不能是模型的意思呢？

xiaomi20003

   经典案例图书

我觉得“MOD“能不能是模型的意思呢？

ocreanus

CAUTION:DONOTSCALEDRAWING意思是切勿缩放图纸.
我也想知道MOD是什么意思,中文应该是"修改"的简写,但是我不明白加工上应该怎么做.是不是跟标准牙一样没有特别要求???

beautifulgirl

   经典案例图书

CAUTION:DONOTSCALEDRAWING意思是切勿缩放图纸.
我也想知道MOD是什么意思,中文应该是"修改"的简写,但是我不明白加工上应该怎么做.是不是跟标准牙一样没有特别要求???

p123456q

BlackJapan:日本黑(一种含有沥青质的涂金属用的黑色快干油漆)
在维基上有关BlackJapan的定义：
JapanBlackisthenameofalacquerorvarnishusedformetal,particularlyiron.Becauseofitshighbitumencontentthecoatingprovidedaprotectivefinishthatwasrelativelydurableanddriedquickly.Thesefeaturesallowedfortheextensiveuseintheproductionofautomobilesintheearly20thcenturyintheUnitedStates.ItisalsocalledBrunswickblackandJapanlacquer.
JapanBlackconsistedmostlyofasphalticbasedissolvedinnaphthaorturpentine,sometimeswithothervarnishingredients.Itisapplieddirectlytometalparts,andthenbakedatabout200°C(400°F)foruptoanhour.[1]JapanBlack'spopularitywasdueinparttoitsdurabilityasanautomotivefinish.HoweveritwastheabilityofJapanBlacktodryquicklythatmadeitafavoriteofearlymassproducedautomobilessuchasHenryFord’sModelT.Ford’srelianceonJapanBlackledtothequipthattheModelTwas“availableinanycolor,solongasitwasblack.”
FordusedtwoformulationsofJapanBlack,F-101andF-102(renamedtoM-101andM-102afterMarch151922).F-101,the"FirstCoatBlackElasticJapan",wasusedasthebasiccoatapplieddirectlytothemetal,whileF-102,"FinishCoatElasticBlackJapan",wasappliedoverthefirstlayer.Theircompositionsweresimilar:25-35%asphaltand10%linseedoilwithleadandironbaseddryers,dissolvedin55%thinners(mineralspirits,turpentinesubstituteornaphtha).TheF-101alsohad1-3%ofcarbonblackaddedasapigment.TheasphaltusedintheFordformulationswasspecifiedtobeGilsonite;itischeap,actsasacuringagentfortheoil,yieldsglossydarksurface,andincreasestheplasticityofthepaintlayer,makingitlesspronetocrackingandpeelingwhensubjectedtovibrationsanddeformation.[2]
Whileothercolorswereavailableforautomotivefinishes,earlycoloredvariantsofautomotivelacquerscouldtakeupto14daystocure,whereasJapanBlackwouldcurein48hoursorless.Thusvariouslycoloredpre-1925carbodieswereusuallyconsignedtospecialorders,orcustombodiedluxuryautomobiles.
Thedevelopmentofquickdryingnitrocelluloselacquers(pyroxylins)whichcouldbecoloredtosuittheneedsofthebuyingpublicinthe1920sleadtothedisuseofJapanBlackbytheendofthe1920s.In1924,GeneralMotorsintroduced"TrueBlue"Duco(aproductofDuPont)nitrocelluloselacqueronits1925modelOaklandautomobilemarqueproducts

shd2006

BlackJapan:日本黑(一种含有沥青质的涂金属用的黑色快干油漆)
在维基上有关BlackJapan的定义：
JapanBlackisthenameofalacquerorvarnishusedformetal,particularlyiron.Becauseofitshighbitumencontentthecoatingprovidedaprotectivefinishthatwasrelativelydurableanddriedquickly.Thesefeaturesallowedfortheextensiveuseintheproductionofautomobilesintheearly20thcenturyintheUnitedStates.ItisalsocalledBrunswickblackandJapanlacquer.
JapanBlackconsistedmostlyofasphalticbasedissolvedinnaphthaorturpentine,sometimeswithothervarnishingredients.Itisapplieddirectlytometalparts,andthenbakedatabout200°C(400°F)foruptoanhour.[1]JapanBlack'spopularitywasdueinparttoitsdurabilityasanautomotivefinish.HoweveritwastheabilityofJapanBlacktodryquicklythatmadeitafavoriteofearlymassproducedautomobilessuchasHenryFord’sModelT.Ford’srelianceonJapanBlackledtothequipthattheModelTwas“availableinanycolor,solongasitwasblack.”
FordusedtwoformulationsofJapanBlack,F-101andF-102(renamedtoM-101andM-102afterMarch151922).F-101,the"FirstCoatBlackElasticJapan",wasusedasthebasiccoatapplieddirectlytothemetal,whileF-102,"FinishCoatElasticBlackJapan",wasappliedoverthefirstlayer.Theircompositionsweresimilar:25-35%asphaltand10%linseedoilwithleadandironbaseddryers,dissolvedin55%thinners(mineralspirits,turpentinesubstituteornaphtha).TheF-101alsohad1-3%ofcarbonblackaddedasapigment.TheasphaltusedintheFordformulationswasspecifiedtobeGilsonite;itischeap,actsasacuringagentfortheoil,yieldsglossydarksurface,andincreasestheplasticityofthepaintlayer,makingitlesspronetocrackingandpeelingwhensubjectedtovibrationsanddeformation.[2]
Whileothercolorswereavailableforautomotivefinishes,earlycoloredvariantsofautomotivelacquerscouldtakeupto14daystocure,whereasJapanBlackwouldcurein48hoursorless.Thusvariouslycoloredpre-1925carbodieswereusuallyconsignedtospecialorders,orcustombodiedluxuryautomobiles.
Thedevelopmentofquickdryingnitrocelluloselacquers(pyroxylins)whichcouldbecoloredtosuittheneedsofthebuyingpublicinthe1920sleadtothedisuseofJapanBlackbytheendofthe1920s.In1924,GeneralMotorsintroduced"TrueBlue"Duco(aproductofDuPont)nitrocelluloselacqueronits1925modelOaklandautomobilemarqueproducts

tiantangsan

   经典图书

有没有人知道BLACKJAPAN在表面处理上面是什么意思啊是Zincblack吗

yeziyu

有没有人知道BLACKJAPAN在表面处理上面是什么意思啊是Zincblack吗

lisan0618

5.PENETRATIONDEPTH:.174-.196.应该是渗碳层？电镀应该不是用PENETRATION

sly333

5.PENETRATIONDEPTH:.174-.196.应该是渗碳层？电镀应该不是用PENETRATION

ganlu520

CAUTION:DONOTSCALEDRAWING
我觉得应该是：图形没按比例（也就是说，图上的不明尺寸不可以用已知尺寸段直接测量对比计算得出。）

eagleye312

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CAUTION:DONOTSCALEDRAWING
我觉得应该是：图形没按比例（也就是说，图上的不明尺寸不可以用已知尺寸段直接测量对比计算得出。）

include

   经典案例图书

FULLFORMEDTHREADSMUSTBEMAINTAINEDTOWITHIN.042OFTHEHEAD.
螺纹前端必须保持有0.042英寸长度的完整螺纹。

jsjsxm

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参与讨论和学习

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FULLFORMEDTHREADSMUSTBEMAINTAINEDTOWITHIN.042OFTHEHEAD.
螺纹前端必须保持有0.042英寸长度的完整螺纹。

ghjhgjghj

   经典案例图书

谢谢！再请教：
1.3/8-24UNF-2A-MOD.,这个MOD是什么意思？
2.SCREWPOINTDESIGNFORTHREADCLEARINGUSE.标注于螺纹外径的尺寸线，螺纹头部有一个弧形缺口，长度3-4牙。，请问如何翻译比较正确和贴切？
3.ROLLEDPOINTCUPPINGPERMISSIBLE标注于螺纹束尾处，请问如何翻译比较正确和贴切？
4.SHAPEANDUSEOFINDENTATIONOPTIONAL标注于螺栓的法兰头，请问如何翻译比较正确和贴切？
5.PENETRATIONDEPTH:.174-.196.有效深度，请问是指电镀（泳）层还是渗碳层？

a376775167

谢谢！再请教：
1.3/8-24UNF-2A-MOD.,这个MOD是什么意思？
2.SCREWPOINTDESIGNFORTHREADCLEARINGUSE.标注于螺纹外径的尺寸线，螺纹头部有一个弧形缺口，长度3-4牙。，请问如何翻译比较正确和贴切？
3.ROLLEDPOINTCUPPINGPERMISSIBLE标注于螺纹束尾处，请问如何翻译比较正确和贴切？
4.SHAPEANDUSEOFINDENTATIONOPTIONAL标注于螺栓的法兰头，请问如何翻译比较正确和贴切？
5.PENETRATIONDEPTH:.174-.196.有效深度，请问是指电镀（泳）层还是渗碳层？