A conical oghere nke a na-ebipụ na-ekwe ka ewepụghị isi ịghasa na-eji na-akpọ a countersink onu. Ọ nwekwara ike na-akpọ ka a conical oghere na-bee n'ime a PCB laminate, ma ọ bụ a oghere kere site na iji a malite ịgba. The isi nzube bụ ikwe ka isi nke a countersunk ịghasa, mgbe ọ na-na-etinyere na screwed ala na onu, na-anọdụ ala iwepụ na elu nke laminate. The cone ekara onu, nke a na-bee n'ime PCB laminate, bụ a countersink. Ọ na-eji ikike na-tapered isi nke a ịghasa nọdụ iwepụ na n'elu ma ọ bụ ala nke laminate.

Ọ na-bụ-eji, nke mere na ewepụghị isi ịghasa nwere ike na-anọdụ iwepụ na elu na-enwe a dị ọcha anya na nwụnye. Iji hụ na ezi imewe maka n'ichepụta, ọtụtụ na-emepụta na-achọ nkọwa nke oghere n'obosara. Ha kwesịkwara ịma ma ọ bụrụ na oghere ahụ dị plated ma ọ bụ. Ịmara na ọ bụrụ na onu bụ efere ma ọ bụ oké egwu n'ihi na ọnọdụ ụfọdụ ihe unplated oghere nwere ike iga na kpuchie, nke nwere ike ime ka a nsogbu na-ga-achọ plating gbazie. Countersinks emekarị nwere ihe 82 ogo ma ọ bụ a 90 ogo n'akuku; Otú ọ dị, ndị ọzọ akụkụ kwere omume na ndị ahịa ga-mkpa inye na PCB fabricator.

N'ihi na ezi ihe-egwu countersink oghere, ndị na-esonụ ozi dị mkpa:

▪ Olee akụkụ nke osisi bụ countersink oghere a ga-gbapuru, on top ma ọ bụ ala ala?

▪ Ọ na-asa na aro na-site plated ma ọ bụ ndị na-abụghị plated?

▪ taper n'akuku ma ọ bụ countersink n'akuku

▪ Countersink n'obosara

▪ The okokụre dayameta nke okporo oghere

▪ Ịdị Omimi nke countersink bụ na-gbapuru

N'okpuru ebe a bụ ihe atụ nke na-enye ihe atụ nke a countersink oghere:

A: Countersink n'akuku, D: Countersink dayameta, d: Oghere n'obosara, H: Oghere omimi