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Datasheet. 21123 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a
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.
1.500in. ⁓1-1/2"
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.
1.750in. ⁓1-3/4"
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.
0.750in. ⁓3/4"
1.312in.
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
1.000in. ⁓1/64"
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.
8
A designation distinguishing one group of thread diameter-pitch combinations from another by the number of threads per measurement scale for a specific diameter.
unc
Answers.
Unc
8
Hexagon
1.500 inches minimum
Right-hand
2a
FSC 5306 ⁓ Bolts
NSN 5306-00-430-9502 BOLT,MACHINE
unc thread series 8 thread quantity per inch hexagon head style 1.500" thread length right-hand 2a thread class
- NIIN
- 004309502
- NIIN Date
- 01/01/63
- Schedule B
- Name Code
- 01847
- FIIG
- A003B0
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- Metal content unknown
- Enviromental
- N/A
- Electrostatic ESD & EMI
- No ESD or EMI sensitivity
Other Part Numbers Parts with same form, fit, and function by other manufacturers
| 1. | R21123 | Cage 23926 |
Major End Users Countries and entities
- - Greece
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21123 / 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.
