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Datasheet. A781475 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.
0.172in. and 0.219in. ⁓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.
0.640in. and 0.687in. ⁓11/16"
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.
0.219in. ⁓7/32"
0.428in. and 0.440in.
The length of a straight line which passes through the center of a hole,and terminates at the circumference.
0.070in. ⁓5/64"
0.246in. and 0.249in.
0.196in. and 0.206in.
0.230in. and 0.240in.
0.468in.
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.
6
Indicates the type of hole(s) provided in the item.
drilled
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
The style designation that most nearly corresponds to the appearance of the hole configuration.
hexagon flats
The number of externally relieved diameters on the body,adjacent to the head.
2
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4037 or steel comp 4140 or steel comp 4130
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
MIL-S-6049 mil spec 1st material response or MIL-S-6050 mil spec 2nd material response or MIL-S-6098 mil spec 3rd material response or ams 6300 assn std 4th material response or MIL-S-5626 mil spec 5th material response or MIL-S-6758 mil spec 6th material response
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 comp 8740 or steel comp 8630 or steel comp 8735 or steel comp 4037 or steel comp 4140 or steel comp 4130
28
0.070 inches
Hexagon
0.172 inches minimum and 0.219 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 5306-00-145-0770 BOLT,EXTERNALLY RELIEVED BODY
unf thread series 28 thread quantity per inch 0.070" hole diameter hexagon head style 0.172" thread length right-hand 3a thread class
- NIIN
- 001450770
- NIIN Date
- 04/16/69
- Schedule B
- 7318152000
- Name Code
- 06675
- 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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A781475 / Bolt,externally relieved bodyWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). it is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. excludes bolt, internal wrenching and thumbscrew. see also screw, externally relieved body.
