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Datasheet. 17957-21 specification
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2a 2nd mounting facility
A numeric-alpha designator indicating the pitch diameter tolerance and an external or internal thread.
2b 1st mounting facility
A measurement of the extent of threads,including incomplete threads,along a line parallel to the longitudinal axis.
0.500in. 2nd mounting facility ⁓2-1/64"
The specific commercial rating which classes the item as to what degree the item will withstand environmental elements and/or hazardous locations.
explosion proof
The dimension measured along the longitudinal axis with terminated points at the extreme ends of the item.
14.030in. ⁓14-1/32"
The distance measured in a straight line from the bottom to the top of an item.
2.810in.
An overall measurement taken at right angles to the length of an item,in distinction from thickness.
2.810in.
A measurement of the longest dimension of the shaft,in distinction from width.
2.530in. single actuator
The number of individual sections included in the item.
25
The identifying code of the orginator that controls or manufacturers the knob.
82121
The identifying part number assigned to the knob.
g
The longest distance between mounting centers parallel to the horizontal plane.
2.300in. 1st mounting facility
The longest distance between mounting centers parallel to the vertical plane.
2.300in. 1st mounting facility
The general configuration of the contacts of a switch that describes its basic switching structure.
NONPILE-Up symmetrical
The number of poles included in the item.
2 each section rear
The number of positions to which the item may be actuated to energize electrical circuits.
2 each section rear
The means of attaching the item.
bracket 1st mounting facility and threaded hole 1st mounting facility
The means of attaching the item.
threaded stud 2nd mounting facility
Those features,not otherwise specified,which may be required for proper functioning of the item.
actuator knob
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
24 1st mounting facility
The number of threads on the item per linear inch measured on a line parallel to the thread axis.
56 2nd mounting facility
A designation that is used for the purpose of general identification of the thread.
0.086in. 2nd mounting facility ⁓2-1/64"
A designation that is used for the purpose of general identification of the thread.
0.190in. 1st mounting facility ⁓1/64"
The voltage for which the contacts are rated,expressed in volts.
125.0 ac at sea level
The general configuration and relative position of the facilities provided for mounting the item.
four position rectangular 1st mounting facility
The number of positions to which the switch actuator may be indexed.
2 single actuator
Indicates the type of shaft included on the item.
rectangular/square, threaded hole single actuator
0.250in. single actuator
Indicates the type of terminal for providing electrical connection to the item.
tab w/screw
An indication of the switching action by the contacts of the item.
makes before breaks, breaks before makes each section rear
The increments of angular rotation that the switch actuator moves between adjacent index positions.
45.0 degrees single actuator
Indicates the type of device included in the switch to limit the angular rotation of its actuator.
fixed stop single actuator
The amount of current that the contacts are rated to make or break with a specified load.
10.0 amperes resistive load ac at sea level
An indication of the precious material and its location in the item.
rotor and stator contact surfaces silver
Identification of the precious material contained in the item.
silver
The style designation indicating the configuration that most nearly corresponds to the appearance of the item.
tap, circuit selector
The specification,standard,drawing,or similar instrument that specifies environmental and performance requirements or test conditions under which an item is tested and establishes acceptable limits within which the item must conform identified by an alphabetic and/or numeric reference number. includes the commercial and government entity (cage) code of the entity controlling the instrument.
81349-MIL-S-21604 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.) .
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 1st mounting facility
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 2nd mounting facility
The document designator of the specification or standard which established the item of supply.
81349-MIL-S-21604/5 government specification
Answers.
1EA
Unc 2nd mounting facility
Unc 1st mounting facility
Tap, circuit selector
56 2nd mounting facility
24 1st mounting facility
2.810 inches
0.500 inches 2nd mounting facility
2b 1st mounting facility
2a 2nd mounting facility
Schedule B number: 8536509025
nmfc 061300
Switches, rotary, rated at over 5 a, for a voltage not exceeding 1,000 volts
FSC 5930 ⁓ Switches
Excluding switchgear.
NSN 5930-00-831-2787 SWITCH,ROTARY
unc 2nd mounting facility thread series tap, circuit selector 56 2nd mounting facility thread quantity per inch 2.810" overall width 14.030" overall length 0.500" 2nd mounting facility thread length 2b 1st mounting facility thread class
- NIIN
- 008312787
- NIIN Date
- 09/06/67
- Schedule B
- 8536509025
- Name Code
- 02134
- FIIG
- A052B0
- Item Weight
- 15.000lbs
- Item Dimensions
- --
- QUP
- 1
- Historical Price
- $689.25 EA
- DEMIL / ITAR
- Uncontrolled item (Code A)
- Hazmat
- No hazard information available from HMIRS.
- MSDS
- N/A
- Precious Metals
- Contains silver
- 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. | S2JR25 | Cage 81349 |
| 2. | MIL-S-21604/5 | Cage 81349 |
| 3. | 9000S6202-73826 | Cage 80064 |
| 4. | 21225B | Cage 82121 |
| 5. | S-224 | Cage 05587 |
| 6. | S-224 | Cage 99699 |
| 7. | 23225-G | Cage 82121 |
| 8. | 17957-10 | Cage 98853 |
Major End Users Countries and entities
- - Department of The Navy
- - U.s. Coast Guard
- - Poland
- - Brazil
- - Spain
- - Australia
- - France
- - Germany
- - Republic of Korea
- - Italy
- - Greece
- - Turkey
Availability for 17957-21 A member of our team will provide you with a price and availability quote
Request a Quote »Shipping Information
- Special Handling
- Other or no special handling required (sh)
- LTL (less than a truck load rating)
- 77.5
- LCL (less than a car load rating)
- Unknown
- Special Cargo
- No special type of cargo code applicable
- Air Freight (Minimum cargo door size required)
- Shipment is not a consolidation and does not exceed 84 inches in any dimension.
- Customs Requirement Classification
- Instruments/equipment/supplies for radio, communications, electrical, laboratory, etc. (includes signal corps)
- Commodity (for shipments via water)
- Communications/electronics, other than sigint/ew or comsec repair parts and components
- NMFC (national motor freight code)
- 061300 CIRCUIT BREAKER/SWITCH NOI
- UFC (universal freight code)
- 34410
Similar by Design Other switchs with similar characteristics
Nothing similar to this part number was found in our inventory
17957-21 / Switch,rotaryWhat is the formal definition of this item?
A switch actuated by a definite angular rotation of the switch shaft about its axis. for items having rated actuation travel and pressure characteristics, see switch, sensitive. excludes relay, rotary; switch, stepping; and switch, telephone (as modified).
