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Metric & Imperial Conversion Flashcards

7 cards from real CFS practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Metric & Imperial Conversion flashcards as text

  1. A thread gauge reads a pitch of 0.8 mm on a small machine screw. Which metric designation does this most likely represent?

    Answer: M5×0.8

    M5 has a standard coarse pitch of 0.8 mm per ISO 261.

  2. What is 25 ft·lbf converted to Newton-meters?

    Answer: 33.9 N·m

    1 ft·lbf = 1.3558 N·m, so 25 × 1.3558 = 33.9 N·m.

  3. An M8 bolt is specified with a minimum yield strength of 640 MPa. Approximately how many psi is this?

    Answer: 92,832 psi

    1 MPa = 145.04 psi, so 640 × 145.04 = 92,826 psi ≈ 92,832 psi.

  4. A hex cap screw has a head height of 0.25 inches. What is this in millimeters?

    Answer: 6.35 mm

    0.25 in × 25.4 = 6.35 mm.

  5. Which of the following metric pitches is the closest equivalent to 20 TPI (threads per inch)?

    Answer: 1.27 mm

    Pitch = 25.4 ÷ 20 = 1.27 mm, which is a standard fine pitch used in some metric series.

  6. A stainless steel stud measures 200 mm in length. What is this in inches?

    Answer: 7.874 inches

    200 mm ÷ 25.4 = 7.874 inches.

  7. A fastener drawing uses the designation 'M16×2-6g.' What does the '2' represent?

    Answer: The thread pitch in millimeters

    In metric thread callouts, the number after the × symbol is the pitch in millimeters.