Part Number 12981727-2

Thumbscrew

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Part Number
DEMIL
Shelf Life
UOM
NIIN
Part:
12981727-2
Demil:
No
Shelf Life:
UOM:
NIIN:
014503255
NSN
National Stock Number:
5305-01-450-3255 5305014503255
TXT
Description:
Thumbscrew
INC
INC
Item Name Code:
06673
MRC:
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.AAJD
Thread Class:
2a
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 0.490 inches and 0.510 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 4.150 inches and 4.170 inches
MRC:
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.AASK
Head Style:
Knurled no. 6
MRC:
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.AASL
Head Diameter:
Between 0.495 inches and 0.505 inches
MRC:
A measurement from the bottom to the top of the head,in distinction from depth.AASU
Head Height:
Between 1.580 inches and 1.600 inches
MRC:
None.AAWK
Distance From Largest Bearing Surface Of Head To End Of Third Diameter:
4.160 inches
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:
The minimum and maximum pitch diameter limits of a nonstandard straight screw thread.CFSG
Nonstandard Thread Pitch Diameter:
+0.2139/+0.2175 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):
20
MRC:
The chemical compound or mechanical mixture properties of which the item is fabricated.MATT
Material:
Steel comp 303
MRC:
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.MDCL
Material Specification:
Astm a581, a582, or ams 5640 assn standard single material response
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:
Mil-std-171, para 5.4.1 military standard 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:
Unc

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