Practice Test Geeks(CFS) Certified Fastener Specialist Practice Test
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Aerospace & Automotive Standards 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 Aerospace & Automotive Standards flashcards as text

  1. In aerospace fastener applications, what failure mode does hydrogen embrittlement most directly cause?

    Answer: Sudden brittle fracture below the material's normal yield strength

    Hydrogen embrittlement causes sudden brittle fracture at stress levels well below the material's yield strength, often with no visible warning signs.

  2. Which automotive OEM standard defines the tightening specifications and cross-reference torque tables for metric fasteners used in powertrain assemblies?

    Answer: GM 6081M

    GM 6081M is General Motors' engineering standard for metric fastener design, material, and torque specification for powertrain and chassis applications.

  3. Under FAA Advisory Circular AC 43.13-1B, what is required when replacing a high-strength bolt in an aircraft with an off-the-shelf hardware store bolt of the same diameter?

    Answer: It is never acceptable — only certified airworthy fasteners may be used

    AC 43.13-1B prohibits substituting commercial hardware store bolts for certified aircraft fasteners regardless of apparent similarity in size or grade.

  4. The Volkswagen Group standard VW 011 55 governs what aspect of automotive fasteners?

    Answer: Surface treatment specifications and test methods

    VW 011 55 defines the surface treatment specifications and required testing methods for fasteners used across Volkswagen Group vehicles.

  5. In aerospace, what is the correct action when a fastener exhibits 'cross-threading' during installation in an aircraft structure?

    Answer: Reject the fastener and repair or replace the damaged structural hole per approved data

    Cross-threaded fasteners in aircraft structures must be rejected and the hole repaired per approved maintenance data — never forced or reused.

  6. SAE J174 is the automotive standard that defines torque-tension testing for fasteners. What is the primary variable this test measures?

    Answer: The relationship between applied torque and resulting clamp load (tension)

    SAE J174 describes the test method for measuring the torque-tension relationship to establish the K-factor (nut factor) for a fastener assembly.

  7. Lockwire (safety wire) installation on aircraft fasteners is governed by which specification?

    Answer: MS33540

    MS33540 provides the military standard requirements and installation techniques for safety wiring (lockwiring) of aircraft fasteners and fittings.