CFS Aerospace & Automotive Standards 2

Question 1

Which NAS (National Aerospace Standard) series covers close-tolerance bolts used in aerospace shear applications?

Accepted Answer

NAS 6604

Answer

NAS 6604 series covers close-tolerance hexagon head bolts used in aerospace shear-critical joints.

Question 2

In automotive fastener standards, what does SAE J429 Grade 8 require for proof load stress?

Accepted Answer

120,000 psi

Answer

SAE J429 Grade 8 bolts must meet a proof load stress of 120,000 psi.

Question 3

ASTM F2281 covers stainless steel bolts and studs intended for use at elevated temperatures. What is the primary concern addressed?

Accepted Answer

Stress relaxation at high temperature

Answer

ASTM F2281 specifically addresses stress relaxation behavior of stainless fasteners under elevated temperature service conditions.

Question 4

Which aerospace standard governs the requirements for self-locking nuts used on aircraft structures under AS9100 quality systems?

Accepted Answer

MIL-N-25027

Answer

MIL-N-25027 covers self-locking nut requirements including prevailing torque values for aerospace structural applications.

Question 5

The AIAG (Automotive Industry Action Group) standard for measurement system analysis is referenced in fastener quality programs. What does MSA stand for?

Accepted Answer

Measurement System Analysis

Answer

MSA stands for Measurement System Analysis and evaluates gauge repeatability and reproducibility in automotive quality systems.

(CFS) Certified Fastener Specialist Practice Test

(CFS) Certified Fastener Specialist Practice Test

CFS Aerospace & Automotive Standards 2