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Datasheet. NAS1801-4D11 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.
0.688in. ⁓45/64"
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.
0.700in. ⁓45/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
dished hexagon
A measurement from the bottom to the top of the head,in distinction from depth.
0.125in. and 0.140in. ⁓9/64"
0.367in. and 0.376in.
The length of a straight line which passes through the center of a hole,and terminates at the circumference.
0.046in. ⁓3/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type ii
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.250in. ⁓1/4"
The number of holes provided.
3
Those features,not otherwise specified,which may be required for proper functioning of the item.
finished head
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
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 screw is fabricated.
steel comp 4340
The metallic,nonmetallic,and/or chemical properties with which the screw is plated,dipped and/or coated.the treatment is designed to protect the surface(s) and cannot be wiped off.
cadmium
The style designation that most nearly corresponds to the appearance of the hole configuration in the head.
hexagon corners
Designates the specific surface roughness rating,representing the arithmetic average deviation of the bearing surface of head from the meanline in profile.
63.0 microinches
Designates the specific surface roughness rating,representing the arithmetic average deviation of the shank surface from the meanline in profile.
32.0 microinches
Designates the specific surface roughness rating,representing the arithmetic average deviation of the thread surface from the meanline in profile.
32.0 microinches
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unjf
Answers.
Unjf
Cadmium
28
0.046 inches minimum
Dished hexagon
0.688 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 5305-01-527-7192 SCREW,MACHINE
unjf thread series cadmium screw surface treated 28 thread quantity per inch 0.046" hole diameter dished hexagon head style 0.688" thread length right-hand 3a thread class
- NIIN
- 015277192
- NIIN Date
- 02/14/05
- Schedule B
- 7318152000
- Name Code
- 06657
- FIIG
- A500D0
- 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
- - New Zealand
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NAS1801-4D11 / Screw,machineWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). no. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. a locking feature may be incorporated in the design of the head or threads. excludes bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. see also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.
