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Datasheet. LSTW7900-12-B-7 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.
0.972in. ⁓63/64"
The style designation indicating the configuration that most nearly corresponds to the appearance of the head.
flat countersunk
The length of a straight line which passes through the center of a circular head,and terminates at the circumference.
0.400in.
The style designation indicating the configuration that most nearly corresponds to the appearance of the internal drive.
TRI-Wing recess
The thickness of the material to be accommodated.
0.090in. and 0.125in.
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.192in. (UTS #12)
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
32
The maximum rated load in tension applied in a longitudinal direction,per unit of cross-sectional area,that the material can withstand without rupture.
1300 pounds per square inch
The included angle of the countersink.
100.0 degrees
The number of lead threads (helixes) that start at the end of the screw.
one
The chemical compound or mechanical mixture properties of which the item is fabricated.
titanium alloy uns R56400
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
Titanium alloy uns r56400
32
Flat countersunk
0.250 inches
Right-hand
3a
Schedule B number: 8108908000
Other wrought titanium
FSC 5305 ⁓ Screws
NSN 5305-01-587-3852 SCREW ASSEMBLY,PANEL
unjf thread series 32 thread quantity per inch flat countersunk head style 0.250" thread length right-hand 3a thread class
- NIIN
- 015873852
- NIIN Date
- 08/04/10
- Schedule B
- 8108908000
- 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
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LSTW7900-12-B-7 / 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.
