Welding nut bụ a nut ofu na workpiece site ịgbado ọkụ. Ụdị ndị a na-emekarị gụnyere akị welding projection (DIN929) na ntụpọ ịgbado ọkụ (DIN2527). Ihe owuwu ya gụnyere ngalaba threaded na ntọala ịgbado ọkụ. Ebe ịgbado ọkụ nwere onye isi ma ọ bụ ụgbọ elu iji kwalite ike ịgbado ọkụ.

Akụ na-agba oji dị elu bụ mkpụrụ nke na-etolite ihe nkiri ojii Fe₃O₄ oxide n'elu ígwè alloy site na chemical oxidation (ọgwụ ọgwụgwọ). Isi ihe na-abụkarị 42CrMo ma ọ bụ 65 manganese ígwè. Mgbe emenyụ + ọgwụgwọ iwe ọkụ, ike ike ahụ nwere ike iru HRC35-45.

Mgbochi atọpụ akị bụ mkpụrụ na-egbochi akị ka ọ ghara ịtọpụ ya site na imewe pụrụ iche.

A na-agbanye mkpụrụ osisi zinc nwere agba na-adabere na electrogalvanizing iji mepụta ihe nkiri passivation na-acha agba nke egwurugwu (nwere trivalent chromium ma ọ bụ chromium hexavalent) nwere ọkpụrụkpụ ihe nkiri nke ihe dịka 0.5-1μm. Ọrụ mgbochi corrosion ya dị mma karịa electrogalvanizing nkịtị, na agba elu na-enwu gbaa, yana arụmọrụ yana ịchọ mma.

Mkpụrụ eletrọnịkị bụ mkpụrụ osisi ọkọlọtọ kacha ewu ewu. A na-edobe oyi akwa zinc n'elu ígwè carbon site na usoro electrolytic. N'elu bụ ọlaọcha na-acha ọcha ma ọ bụ bluish na-acha ọcha, ma nwee ma mgbochi corrosion na ịchọ mma ọrụ. Ọdịdị ya na-agụnye isi hexagonal, akụkụ eriri, na akwa galvanized, nke na-akwado GB/T 6170 na ụkpụrụ ndị ọzọ.

Mkpụrụ flange galvanized eletrọnịkị bụ mkpụrụ pụrụ iche nke nwere flange okirikiri agbakwunyere n'otu nsọtụ nke akị hexagonal. Flange na-abawanye mpaghara kọntaktị na akụkụ ndị ejikọrọ, na-agbasa nrụgide ma na-eme ka nkwụsi ike dị elu. Ọdịdị ya na-agụnye akụkụ eri, flange na galvanized oyi akwa. Ụfọdụ ụdị nwere ezé mgbochi na-adịghị mma n'elu flange (dị ka ọkọlọtọ DIN6923).