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Datasheet. NAS1801-4-19 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.
1.1715in. and 1.2175in. ⁓1-7/32"
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.
1.1715in. and 1.2175in. ⁓1-7/32"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
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 style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
cross recess type 1
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.2500in. ⁓1/4"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
screw, hex head, cruciform recess, full thread, alloy steel, 160 ksi ftu
The chemical compound or mechanical mixture properties of which the screw is fabricated.
steel comp 4140 or steel comp 4340 or steel comp 8740
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the screw material.
AMS6382 national spec 1st material response or AMS6415 or 6484 national spec 2nd material response or AMS6322 national spec 3rd material response
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 specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material of the screw.
QQ-P-416, type ii, class 2 fed spec single treatment response
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
The document designator of the specification or standard which established the item of supply.
80205-NAS1801 professional/industrial association standard
Answers.
Unjf
Cadmium
28
Hexagon
1.1715 inches minimum and 1.2175 inches maximum
Right-hand
3a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-622-9220 SCREW,MACHINE
unjf thread series cadmium screw surface treated screw, hex head, cruciform recess, full thread, alloy steel, 160 ksi ftu 28 thread quantity per inch hexagon head style 1.1715" thread length right-hand 3a thread class
- NIIN
- 016229220
- NIIN Date
- 10/25/13
- Schedule B
- 7318152000
- Name Code
- 06657
- FIIG
- A500D0
- DEMIL / ITAR
- Uncontrolled item (Code )
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- --
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Major End Users Countries and entities
- - Republic of Korea
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NAS1801-4-19 / 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.
