Ụkpụrụ ndị a na-ejikarị eme ihe bụ ndị a:
Ọkọlọtọ Mba GB-China (Ọkwa Mba)
Ụkpụrụ Mba ANSI-American (American Standard)
Ụkpụrụ Mba DIN-German (Ụkpụrụ German)
ASME-American Society of Mechanical Engineers Standard
JIS-Japanese National Standard (Japanese National Standard)
BSW-British National Standard
Tinyere akụkụ ụfọdụ dị mkpa, dịka ọkpụrụkpụ isi na isi n'akụkụ nke ọzọ, akụkụ kachasị dị iche na ọkọlọtọ ndị a kpọtụrụ aha maka skru bụ eriri. Eriri nke GB, DIN, JIS, wdg. niile dị na MM (millimita), nke a na-akpọ eriri metric. Eriri dị ka ANSI, ASME, dị na sentimita ma a na-akpọkwa eriri ọkọlọtọ America. E wezụga eriri metric na eriri America, enwere ọkọlọtọ BSW-British, eri dịkwa na sentimita, nke a na-akpọkarị eriri Whitworth.
Eriri metric dị na MM (mm), akụkụ cusp ya dịkwa ogo 60. A na-atụ ma eriri America na Imperial na inch. Akụkụ cusp nke eriri America dịkwa ogo 60, ebe akụkụ cusp nke eriri Britain bụ ogo 55. N'ihi nkeji nha dị iche iche, ụzọ nnọchite anya nke eriri dị iche iche dịkwa iche. Dịka ọmụmaatụ, M16-2X60 na-anọchite anya eriri metric. Ọ pụtara kpọmkwem na dayameta aha nke skru ahụ bụ 16MM, ụda olu bụ 2MM, ogologo ya bụkwa 60MM. Ihe atụ ọzọ: 1/4-20X3/4 pụtara eriri sistemụ Britain. Ihe ọ pụtara kpọmkwem bụ dayameta aha nke skru ahụ bụ 1/4 inch (otu inch = 25.4MM), enwere ezé 20 n'otu inch, ogologo ya bụkwa 3/4 inch. Na mgbakwunye, ọ bụrụ na ịchọrọ igosi skru ndị America mere, a na-agbakwụnye UNC na UNF mgbe skru ndị Britain mere gasịrị iji mata ọdịiche dị n'etiti eriri siri ike nke America mere na eriri mara mma nke America mere.
Yihe enterprise bụ ụlọ ọrụ pụrụ iche n'ịmepụta skru amchine nke US ANSI, skru igwe BS, bolt corrugated, indlcuidng 2BA, 3BA, 4BA; skru igwe nke German mere DIN (DIN84/ DIN963/ DIN7985/ DIN966/ DIN964/ DIN967); GB Series na ụdị ngwaahịa ọkọlọtọ na nke na-abụghị ọkọlọtọ dịka skru igwe na ụdị skru igwe ọla niile.
Oge ozi: Feb-09-2023