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Datasheet. 553987 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.
0.255in. and 0.335in. ⁓11/32"
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.
0.615in. and 0.635in. ⁓41/64"
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.
0.080in. and 0.100in. ⁓7/64"
0.430in. and 0.439in.
The length of a straight line which passes through the center of the shank unthreaded hole,and terminates at the inside circumference.
0.065in. first hole and 0.072in. first hole
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"
A measurement of the longest dimension of the grip,in distinction from width.
0.300in. and 0.360in.
Those features,not otherwise specified,which may be required for proper functioning of the item.
finished head
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
28
A numeric value that reflects the hardness of an item when used in conjunction with a hardness rating scale.
30.0 rockwell c and 38.0 rockwell c
The distance from the shank hole centerline to the largest bearing surface of the head.
0.500in. first hole and 0.520in. first hole
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
125.0 microinches top of head
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
32.0 microinches threads
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
63.0 microinches bearing surface of head
Designates the specific surface roughness rating,representing the arithmetic average deviation of the surface from the meanline in profile.
63.0 microinches grip
The chemical compound or mechanical mixture properties of which the item is fabricated.
steel corrosion resisting
The specification,standard,or manufacturers reference,and the classification designation,such as class,condition,temper,and the like,that identifies the material.
ams 5616 assn std single 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.
unjf
Answers.
Unjf
Steel corrosion resisting
28
0.300 inches minimum and 0.360 inches maximum
Hexagon
0.255 inches minimum and 0.335 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 5306-00-891-2004 BOLT,MACHINE
unjf thread series 28 thread quantity per inch 0.300" grip length hexagon head style 0.255" thread length right-hand 3a thread class
- NIIN
- 008912004
- NIIN Date
- 01/18/67
- Schedule B
- 7318152000
- Name Code
- 01847
- FIIG
- A003B0
- Item Weight
- 10.000lbs
- Item Dimensions
- 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
Other Part Numbers Parts with same form, fit, and function by other manufacturers
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553987 / Bolt,machineWhat is the formal definition of this item?
An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. the threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. a locking feature may be incorporated in the design of the head or threads. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. for items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. see also screw, cap, hexagon head and screw, machine.
