NSN 5905-00-978-0975 R57EJB, 2279711, 227971-1
Product Details | NONPRECISION WIRE WOUND VARIABLE RESISTOR
5905-00-978-0975 A resistor in which a sliding or rolling contact moves over an exposed area of the resistive element to change the ohmic value of the output. The functional tolerance (linearity), if given, of the output is greater than plus of minus 1 percent on linear outputs. Specified outputs such as sine, cosine, tangent, etc., shall be considered to be precision. For items having manually positioned taps designed to be set and fixed prior to use, see RESISTOR, ADJUSTABLE. For items with step by step variation, see RHEOSTAT and RESISTOR, STEP BY STEP. For tandem-mounted items designed to function together as an attenuator (and rated accordingly), see ATTENUATOR, VARIABLE. Excludes RESISTOR (1), VARIABLE, NONWIRE WOUND, NONPRECISION; RESISTOR (1), VARIABLE, NONWIRE WOUND, PRECISION; and RESISTOR (1), VARIABLE, WIRE WOUND, PRECISION.
Part Alternates: R57EJB, 2279711, 227971-1, 5905-00-978-0975, 00-978-0975, 5905009780975, 009780975
Electrical and Electronic Equipment Components | Resistors
| Supply Group (FSG) | NSN Assign. | NIIN | Item Name Code (INC) |
|---|---|---|---|
| 59 | 01 JAN 1962 | 00-978-0975 | 37406 ( RESISTOR, VARIABLE, WIRE WOUND, NONPRECISION ) |
Drawings & Photos | NSN 5905-00-978-0975
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Technical Data | NSN 5905-00-978-0975
| Characteristic | Specifications |
|---|---|
| SECTION QUANTITY | 1 |
| ELECTRICAL RESISTANCE PER SECTION | 20.0 KILOHMS SINGLE SECTION |
| RESISTANCE TOLERANCE PER SECTION IN PERCENT | -10.0 TO 10.0 SINGLE SECTION |
| STANDARD TAPER CURVE PER SECTION | A SINGLE SECTION |
| MAXIMUM STOP TORQUE | 48.00 INCH-OUNCES |
| MAXIMUM STARTING TORQUE | 6.00 INCH-OUNCES |
| TEMP COEFFICIENT OF RESISTANCE PER SECTION IN PPM PER DEG CELSIUS | -20.0 TO 20.0 SINGLE SECTION |
| POWER DISSIPATION RATING PER SECTION IN WATTS | 2.0 FREE AIR SINGLE SECTION |
| AMBIENT TEMP IN DEG CELSIUS PER SECTION AT FULL RATED POWER | 70.0 SINGLE SECTION |
| AMBIENT TEMP IN DEG CELSIUS PER SECTION AT ZERO PERCENT RATED POWER | 125.0 SINGLE SECTION |
| BODY STYLE | 1B CYLINDRICAL BUSHING MOUNTED |
| BODY DIAMETER | 0.470 INCHES MINIMUM AND 0.530 INCHES MAXIMUM |
| BODY LENGTH | 0.597 INCHES NOMINAL |
| MOUNTING BUSHING LENGTH | 0.391 INCHES MAXIMUM |
| ACTUATOR TYPE | SINGLE SHAFT |
| SHAFT STYLE | 3C ROUND, SLOTTED |
| SHAFT DIAMETER | 0.124 INCHES MINIMUM AND 0.125 INCHES MAXIMUM |
| SHAFT LENGTH | 0.451 INCHES NOMINAL |
| ROTARY ACTUATOR TRAVEL IN ANGULAR DEG | 325.0 NOMINAL |
| ACTUATOR TRAVEL CONTROL FEATURE | STOPS |
| EFFECTIVE ELECTRICAL ROTATION IN DEG ANGULAR ROTATION | 300.0 NOMINAL |
| NONTURN DEVICE LOCATION | AT 6 OCLOCK |
| NONTURN DEVICE RADIUS | 0.531 INCHES NOMINAL |
| MOUNTING METHOD | LOCKING BUSHING |
| SCREW THREAD SERIES DESIGNATOR | UNEF |
| SCREW THREAD DIAMETER | 0.250 INCHES NOMINAL |
| SCREW THREAD QUANTITY PER INCH | 32.0 |
| TERMINAL TYPE AND QUANTITY | 3 TAB, SOLDER LUG |
| TERMINAL LOCATION | REAR END |
| RELIABILITY INDICATOR | NOT ESTABLISHED |
| III OVERALL LENGTH | 1.205 INCHES NOMINAL |
| MANUFACTURERS CODE | 37695 |
| DESIGN CONTROL REFERENCE | 227971-1 |
Restrictions/Controls & Freight Information | NSN 5905-00-978-0975
| Category | Code | Description |
|---|---|---|
| Shelf-Life Code: | 0 | Nondeteriorative |
| Hazardous Material Indicator Code | N | There is no data in the HMIS and the NSN is in an FSC not generally suspected of containing hazardous materials |
| Demilitarization Code: | A | Non-Munitions List Item/ Non-Strategic List Item - Demilitarization not required. |
| Controlled Inventory Item Code: | U | UNCLASSIFIED |
| Precious Metals Indicator Code: | U | Precious metal type is unknown |
| Criticality Code: | X | The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. |
| Category | Code | Description |
|---|---|---|
| NMF Description | 062960 | REOSTATS/PARTS NOI |
| Less than car load rating | ||
| Less than truck load rating | P | 77.5 |
| Water commodity Code | 72D | unknown |
| Originating Activity Code | XX | |
| Air Dimension Code | A | Shipment is not a consolidation and does not exceed 72 inches in any dimension. |
| Air Commodity | H | Signal Corps supplies and equipment, including radio equipment and supplies, communications equipment and supplies, electrical equipment and supplies, etc. |
| Air Special Handling | Z | No special handling required. |
| Special Handling Code | 9 | unknonwn |
| HAZMAT | ||
| Type of Cargo | Z | No special type of cargo code applicable |
Management | NSN 5905-00-978-0975
Navy| Category | Code | Description |
|---|---|---|
| Cognizance Codes | 9B | Navy-owned stocks of DLA material Naval Inventory Control Point, Mechanicsburg |
| Source of Supply | SMS | Defense Logistics Agency Enterprise Business Systems |
| Agency | DN | Department of the Navy |
| Service Organization | N | U.S. Navy |
| Acquisition Advice Codes | X | SEMIACTIVE ITEM-NO REPLACEMENT (NON-STOCKED ITEMS) A potentially inactive NSN which must be retained in the supply system as an item of supply because (1) stocks of the item are on hand or in use below the wholesale level and (2) the NSN is cited in equipment authorization documents TO & E, TA, TM, etc., or in-use assets are being reported. 1. Items are authorized for central procurement but not authorized for stockage at wholesale level. 2. Requisitions for in-use replacement will be authorized in accordance with individual Military Service directives. 3. Requisitions may be submitted as requirements generate. Repetitive demands may dictate an AAC change to permit wholesale stockage. |
| Controlled Item Code | U | UNCLASSIFIED |
| Shelf Life Code | 0 | Nondeteriorative |
| Purchasing | QTY UOM |
1 EA : Each |