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Datasheet. 18S03-1-1AA specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
3b
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
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.
0.585in. and 0.595in. ⁓39/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
pan
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.320in. and 0.330in.
A measurement from the bottom to the top of the head,in distinction from depth.
0.110in. ⁓1/8"
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.
0.164in. (UTS #8)
The shortest straight line between flats,perpendicular to the height.
0.157in. and 0.160in. ⁓11/64"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
36
The name assigned to the item by the government agency or commercial organization controlling the design of the item.
stud assembly plus flush
The number of lead threads (helixes) that start at the end of the screw.
four
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.
recess plug depth is 0.179 - 0.191in.; internal threads
The chemical compound or mechanical mixture properties of which the item is fabricated.
chromium bearing surface of head and nickel bearing surface of head and steel bearing surface of head
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel fastener
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
ams 6322 assn std single material response fastener
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
astm A240 assn std 1st material response bearing surface of head and astm A167 assn std 2nd material response bearing surface of head and astm A666 assn std 3rd material response bearing surface of head
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 fastener
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.
passivate bearing surface of head
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
AMS-QQ-P-35 fed spec all treatment responses bearing surface of head
The specification,standard,or manufacturers reference,and the classification designation,such as type,class,grade,and the like,that identifies the surface treatment material.
QQ-P-416, TY2 CL2 fed spec all treatment responses fastener
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unf
Answers.
Unf
Steel fastener
Chromium bearing surface of head and nickel bearing surface of head and steel bearing surface of head
36
Pan
Right-hand
3b
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5305 ⁓ Screws
NSN 5305-01-553-3543 SCREW ASSEMBLY,PANEL
unf thread series passivate bearing surface of head surface treated recess plug depth is 0.179 - 0.191"; internal threads stud assembly plus flush 36 thread quantity per inch pan head style right-hand 3b thread class
- NIIN
- 015533543
- NIIN Date
- 07/13/07
- Schedule B
- 7318152000
- Name Code
- 33044
- 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
- - Italy
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18S03-1-1AA / Screw assembly,panelWhat is the formal definition of this item?
A headed, threaded fastening device over which may be assembled; (1) a stand-off; (2) a flanged bushing with washer(s) and/or a shouldered bushing without a flange, or it may have an internally threaded sleeve that is an integral part of the screw; a washer and an externally thread self-locking bushing that is driven by an inserted driver. attached to panel by threaded bushing or by flaring end of stand-off, or bushing. used in conjunction with a speed nut, nut plate, or driven into a threaded hole in the item that the panel is fastened to. may be spring loaded.
