IPC-A-610 | Chapter 4 || All Accurately Answered.
Hardware correct answers Note: Criteria in this section do not apply to attachments with self-
tapping screws.
Visual inspection is performed in order to verify the following:
a. Correct parts and hardware
b. Correct sequence of assembly
c. Correct security tightness of parts and hardware
d. No discernible damage
e. Correct orientation of parts and hardware
Hardware Installation - Electrical Clearance
Acceptable - Class 1,2,3 correct answers Spacing between noncommon conductors does not
violate specified minimum electrical clearance (3)
Hardware Installation - Electrical Clearance
Defect - Class 1,2,3 correct answers
Hardware Installation - Interference
Defect - Class 1,2,3 correct answers - Excess
- Anything
Hardware Installation - Installation - Component Mounting - High Power
Acceptable - Class 1,2,3 correct answers
Hardware Installation - Installation - Component Mounting - High Power
Defect - Class 1,2,3 correct answers
, Hardware Installation - Installation - Heatsinks - Insulators and Thermal Compounds
Defect - Class 1,2,3 correct answers Thermal compound precludes formation of required solder
connection
Hardware Installation - Heatsinks - Contact
Acceptable - Class 1,2,3 correct answers - Component not flush
- Minimum 75% contact with mounting surface
- Hardware meets mounting torque requirements if specified
correct answers Devices such as "star" or "tooth" washers may have onen side with sharp edges
intended to cut into the mating surface to keep the hardware from coming loose in operation.
Unless otherwise specified the sharp edges of the lock washer should be against the flat washer.
correct answers Less than one and on-half threads extend beyond the threaded hardware, e
Hardware Installation - Threaded Fasteners and Other Threaded Hardware correct answers -
Thread extension interferes with adjacent component
- Flat washer missing
Hardware Installation - Torque Fasteners and Other Threaded Hardware - Torque correct answers
- Split ring lock washer, if used, is not compressed
- Fastener torque value, if specified, is not within limits
- Hardware is loose
- Required torque stripe does not
correct answers Original lay of the starnds is not disturbed (stranded wire)
Wire wrapped a minimum of 270° around the screw body
correct answers - Less
Hardware correct answers Note: Criteria in this section do not apply to attachments with self-
tapping screws.
Visual inspection is performed in order to verify the following:
a. Correct parts and hardware
b. Correct sequence of assembly
c. Correct security tightness of parts and hardware
d. No discernible damage
e. Correct orientation of parts and hardware
Hardware Installation - Electrical Clearance
Acceptable - Class 1,2,3 correct answers Spacing between noncommon conductors does not
violate specified minimum electrical clearance (3)
Hardware Installation - Electrical Clearance
Defect - Class 1,2,3 correct answers
Hardware Installation - Interference
Defect - Class 1,2,3 correct answers - Excess
- Anything
Hardware Installation - Installation - Component Mounting - High Power
Acceptable - Class 1,2,3 correct answers
Hardware Installation - Installation - Component Mounting - High Power
Defect - Class 1,2,3 correct answers
, Hardware Installation - Installation - Heatsinks - Insulators and Thermal Compounds
Defect - Class 1,2,3 correct answers Thermal compound precludes formation of required solder
connection
Hardware Installation - Heatsinks - Contact
Acceptable - Class 1,2,3 correct answers - Component not flush
- Minimum 75% contact with mounting surface
- Hardware meets mounting torque requirements if specified
correct answers Devices such as "star" or "tooth" washers may have onen side with sharp edges
intended to cut into the mating surface to keep the hardware from coming loose in operation.
Unless otherwise specified the sharp edges of the lock washer should be against the flat washer.
correct answers Less than one and on-half threads extend beyond the threaded hardware, e
Hardware Installation - Threaded Fasteners and Other Threaded Hardware correct answers -
Thread extension interferes with adjacent component
- Flat washer missing
Hardware Installation - Torque Fasteners and Other Threaded Hardware - Torque correct answers
- Split ring lock washer, if used, is not compressed
- Fastener torque value, if specified, is not within limits
- Hardware is loose
- Required torque stripe does not
correct answers Original lay of the starnds is not disturbed (stranded wire)
Wire wrapped a minimum of 270° around the screw body
correct answers - Less
