Part Number
DEMIL
Shelf Life
UOM
NIIN
NSN
National Stock Number:
TXT
Description:
Close Tolerance Bolt
MRC:
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.AAJD
Thread Class:
3a
MRC:
The direction of the thread when viewed axially. a right-hand thread winds in a clockwise direction while a left-hand thread winds in a counterclockwise direction.AAJF
Thread Direction:
Right-hand
MRC:
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.AASA
Thread Length:
Between 0.282 inches and 0.333 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 3.356 inches and 3.376 inches
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.AASK
Head Style:
Dished hexagon
MRC:
A measurement from the bottom to the top of the head,in distinction from depth.AASU
Head Height:
Between 0.126 inches and 0.141 inches
Width Between Flats:
Between 0.430 inches and 0.439 inches
MRC:
An element inserted into the fastener,or a design feature,that enables the fastener to effectively resist vibration and rotation.AAUM
Locking Feature:
Detent ring grip
MRC:
The length of a straight line which passes through the center of the grip,and terminates at the circumference.AAUR
Grip Diameter:
Between 0.2483 inches and 0.2492 inches
MRC:
The length of a straight line which passes through the center of the shank unthreaded hole,and terminates at the inside circumference.AAWB
Shank Unthreaded Hole Diameter:
0.076 inches first hole and 0.086 inches first hole
MRC:
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.AHYM
Thread Diameter:
0.250 inches
MRC:
A measurement of the longest dimension of the grip,in distinction from width.ANEE
Grip Length:
Between 2.938 inches and 2.954 inches
MRC:
The number of threads on the item per linear inch measured on a line parallel to the thread axis.CMLP
Thready Qty Per Inch (tpi):
28
MRC:
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.CQFM
Hardness Rating:
36.0 rockwell c and 41.0 rockwell c
MRC:
The distance from the shank hole centerline to the largest bearing surface of the head.CRZS
Distance From Head Largest Bearing Surface To Shank Hole Center:
3.256 inches first hole and 3.286 inches first hole
MRC:
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.CSYM
Surface Finish:
63.0 microinches bearing surface of head
MRC:
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.CSYM
Surface Finish:
63.0 microinches grip
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 4130 or steel comp 6150
MRC:
The metallic,nonmetallic,and/or chemical properties with which the item is plated,dipped,and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.SFTT
Surface Treatment:
Cadmium and chromate
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.STDC
Surface Treatment Specification:
Qq-p-416, type 2, class 2 federal specification single treatment response
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:
Unjf
