The wood is graded to a militaryspecification by a certified lumber grader.
木材是一个军事规格分级由经过认证的木材年级。
2
That militaryspecification is numbered 6073 and I will define it later in the article.
军事规格的编号为6073，我将在以后的文章中定义研究。
3
Also known as Hex Head Screws or Hex Head Bolts. Includes Standard, Drilled Head, Left Hand Threaded, Self-Sealing, and MilitarySpecification Cap Screws.