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Datasheet. ST3M494-4D25 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.
0.425in. ⁓7/16"
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.
1.9875in.
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.
0.156in. ⁓5/32"
0.492in. and 0.502in.
The length of a straight line which passes through the center of the shank unthreaded hole,and terminates at the inside circumference.
0.076in. first hole
The national stock number or the identification information of the end equipment for which the item is a part.
F-15Sa
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 distance from the shank hole centerline to the largest bearing surface of the head.
1.8095in. first hole
The chemical compound or mechanical mixture properties of which the item is fabricated.
iron alloy 660
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
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
Iron alloy 660
28
Hexagon
0.425 inches
Right-hand
3a
Schedule B number: 7318152000
Bolts and bolts and their nuts or washers exported in the same shipment
FSC 5306 ⁓ Bolts
NSN 5306-01-624-9371 BOLT,SHOULDER
Used on F-15SA. unjf thread series passivate surface treated 28 thread quantity per inch hexagon head style 0.425" thread length right-hand 3a thread class
- NIIN
- 016249371
- NIIN Date
- 01/18/14
- Schedule B
- 7318152000
- Name Code
- 04905
- FIIG
- A003B0
- 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
- - Department of The Air Force
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ST3M494-4D25 / Bolt,shoulderWhat is the formal definition of this item?
An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. it has a round unthreaded neck or shank all or part of which is of greater diameter than the threaded portion. the head is not designed to be held or driven with an inserted drivers. a locking feature may be incorporated in the design of the head or threads. for items with a thread diameter smaller than no. 10 (0.190 in.) (5 mm) and those items with an inserted drive head, use screw, shoulder. for items which are no. 10 (0.190 in.) (5 mm) or larger in size and are both shouldered and have an externally relieved body, use bolt, externally relieved body. excludes thumbscrew.
