MRC:
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.AASA
Thread Length:
Between 0.360 inches and 0.380 inches
MRC:
The dimension,measured along a line parallel to the longitudinal axis,from the largest bearing surface of the fastener head to the extreme opposite end,or as specifically designated for other type fasteners.AASB
Fastener Length:
Between 0.1440 inches and 1.480 inches
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.AASK
Head Style:
Tee no. 3
MRC:
A measurement from the bottom to the top of the head,in distinction from depth.AASU
Head Height:
Between 0.200 inches and 0.220 inches
MRC:
A measurement of the longest dimension of a head,in distinction from width.AASV
Head Length:
Between 0.570 inches and 0.580 inches
Width Between Flats:
Between 0.405 inches and 0.415 inches
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Iron alloy 660
MRC:
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.THSD
Thread Series Designator:
Unf
