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Datasheet. NAS1081-02B4L specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3a
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.
RIGHT-Hand
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.250in. ⁓1/4"
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.
0.089in. ⁓3/32"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
dished hexagon
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.094in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.044in. and 0.061in. ⁓1/16"
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
hexagon
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.860in. ⁓7/8"
The shortest straight line between flats,perpendicular to the height.
0.035in. ⁓3/64"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
56
Those unusual or unique characteristics or qualities of an item not covered in the other requirements and which are determined to be essential for identification.
w/strip locking element
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjc
Answers.
Unjc
Steel
56
Dished hexagon
0.250 inches
Right-hand
3a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-518-5535 SETSCREW
unjc thread series w/strip locking element 56 thread quantity per inch dished hexagon head style 0.250" thread length right-hand 3a thread class
- NIIN
- 015185535
- NIIN Date
- 03/16/04
- Schedule B
- 7318152000
- Name Code
- 06672
- FIIG
- A003B0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- No precious metals
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - France
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NAS1081-02B4L / SetscrewWhat is the formal definition of this item?
An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. a locking feature may be incorporated in the design of the head or threads.
