CFS Industry Standards & Regulations 2 — Questions and Answers
Question 1: Which ASME standard governs the dimensional requirements for hex cap screws used in pressure vessels?
- ASME B18.2.1 (Correct answer)
- ASME B16.5
- ASME B31.1
- ASME PCC-1
Correct answer: ASME B18.2.1
ASME B18.2.1 specifies dimensional requirements for inch series square and hex bolts and screws, including hex cap screws.
Question 2: Under ASTM F3125, which grade designation covers structural bolts with a minimum tensile strength of 150 ksi?
- Grade A325
- Grade F1852
- Grade A490 (Correct answer)
- Grade A307
Correct answer: Grade A490
ASTM F3125 Grade A490 structural bolts have a minimum tensile strength of 150 ksi, making them the higher-strength option compared to A325.
Question 3: What does the RoHS Directive restrict in fastener manufacturing?
- Use of metric thread profiles
- Use of certain hazardous substances including lead and cadmium (Correct answer)
- Export of fasteners to non-EU countries
- Use of non-ferrous base metals
Correct answer: Use of certain hazardous substances including lead and cadmium
The EU RoHS Directive restricts the use of specific hazardous substances such as lead, mercury, cadmium, and hexavalent chromium in electrical and electronic equipment, including fasteners used in such products.
Question 4: Which standard specifies minimum performance requirements for self-drilling screws?
- ASME B18.6.4
- SAE J78 (Correct answer)
- ISO 15480
- ASTM F1941
Correct answer: SAE J78
SAE J78 specifies performance requirements for steel self-drilling tapping screws, including drill point performance and thread-forming capability.
Question 5: In the context of REACH regulation, what must fastener manufacturers do if their product contains a SVHC above 0.1% by weight?
- Immediately cease production
- Notify customers and provide safe use information (Correct answer)
- Replace the fastener with a plastic alternative
- File a waiver with the EPA
Correct answer: Notify customers and provide safe use information
Under REACH, if a fastener article contains a Substance of Very High Concern (SVHC) above 0.1% w/w, the supplier must notify customers and provide safe use information upon request.
Question 6: Which ISO standard establishes the property classes for metric steel bolts and screws?
- ISO 898-1 (Correct answer)
- ISO 4014
- ISO 3269
- ISO 724
Correct answer: ISO 898-1
ISO 898-1 specifies mechanical and physical properties for metric fasteners made of carbon and alloy steel, defining property classes such as 8.8, 10.9, and 12.9.
Question 7: What is the primary purpose of ASTM F606 in the fastener industry?
- To specify coating thickness requirements
- To define test methods for determining mechanical properties of externally threaded fasteners (Correct answer)
- To set packaging and labeling standards
- To regulate counterfeit fastener detection
Correct answer: To define test methods for determining mechanical properties of externally threaded fasteners
ASTM F606 establishes standard test methods for determining the mechanical properties of externally and internally threaded fasteners, washers, and rivets.
CFS Industry Standards & Regulations 2
Which ASME standard governs the dimensional requirements for hex cap screws used in pressure vessels?