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Datasheet. 21560641 specification
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
3.750in. ⁓3-3/4"
The national stock number or the identification information of the end equipment for which the item is a part.
diesel engine, alco 251
The nominal length of a straight line which passes through the center of the threaded portion,and terminates at the circumference.
0.625in. ⁓5/8"
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
11
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
11
3.750 inches
FSC 5305 ⁓ Screws
NSN 5305-01-470-1696 SCREW,CAP,HEXAGON HEAD
Used on diesel engine, alco 251. unc thread series 11 thread quantity per inch 3.750" thread length
- NIIN
- 014701696
- NIIN Date
- 12/09/99
- Schedule B
- Name Code
- 18257
- 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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21560641 / Screw,cap,hexagon headWhat is the formal definition of this item?
An externally threaded fastener designed for insertion into holes in assembled parts, for mating with a preformed internal thread and for tightening or releasing by torquing the head. the threaded and unthreaded portions are both of the same nominal diameter of 0.190 inch (5 mm) or larger. head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. the thread length being the controlled dimension, the grip length is not specified. a locking feature may be incorporated in the design of the head or threads. the head is not designed to be held or driven with an inserted driver or by the thumb and fingers. excludes bolt,machine; bolt,externally relieved body; bolt,internal wrenching; and screw,cap,socket head.
