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Datasheet. NAS149-72 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.
0.860in. and 0.890in. ⁓57/64"
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.
4.485in. and 4.515in. ⁓4-33/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
BEVEL-Conical
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.927in. and 0.938in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.539in. ⁓35/64"
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.
0.5625in. ⁓37/64"
The shortest straight line between flats,perpendicular to the height.
0.5005in. and 0.5035in. ⁓33/64"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
18
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
160000 pounds per square inch
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 4340 or steel comp 8740 or steel comp 6150
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.
cadmium
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unc
Answers.
Unc
Steel comp 4340 or steel comp 8740 or steel comp 6150
18
Bevel-conical
0.860 inches minimum and 0.890 inches maximum
Right-hand
3a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5306 ⁓ Bolts
NSN 5306-00-282-4348 BOLT,INTERNAL WRENCHING
unc thread series cadmium surface treated 18 thread quantity per inch bevel-conical head style 0.860" thread length right-hand 3a thread class
- NIIN
- 002824348
- NIIN Date
- 01/01/60
- Schedule B
- 7318152000
- Name Code
- 06666
- FIIG
- A003B0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- --
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
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NAS149-72 / Bolt,internal wrenchingWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. it is designed with an internal socket or internal multiple spline for use with an internal driver. the head is beveled (conical) or cylindrical in shape. items with cylindrical shaped heads must have an externally relieved body. a locking feature may be incorporated in the design of the head or threads. see also screw, cap, socket head. excludes setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.
