Converters, Electrical, Nonrotating

Federal Supply Class (FSC): 6130

NATO Supply Classification Class (NSC): 6130

Group Description: Electric Wire, and Power and Distribution Equipment

Federal Supply Group (FSG): 61

NATO Supply Classification Group (NSG): 61

Page 42 of 329

NSN Format for Converters, Electrical, Nonrotating

6130XXXXXXXXX
Group
FSG
ClassNCBIdentifier
FSC
Federal Supply Class
NIIN
NSN
FSC 6130 Converters, Electrical, Nonrotating
FSC 6130 Converters, Electrical, Nonrotating

Includes Complete Battery Charging Equipment, Nonrotating; Power Supplies, Multiapplication.

Excludes Rectifying Tubes; (FSC 5960); Rectifying Crystals (FSC 5961); Rotating Equipment (FSC 6125); Transformers (FSC 5950); and Semiconductor Devices and Associated Hardware (FSC 5961).

Additional Information for Converters, Electrical, Nonrotating Additional Information for Converters, Electrical, Nonrotating

NATO Supply Class 6130 is a classification within NATO Supply Group 61, which is dedicated to Electric Wire, And Power And Distribution Equipment.

Specifically, NATO Supply Class 6130 refers to Converters, Electrical, Nonrotating. These are devices that are used to convert electrical energy from one form to another without any rotating parts. They are commonly used in various electrical systems and applications.

Examples of converters in this class include power inverters, voltage converters, frequency converters, and phase converters. These devices are designed to convert electrical energy to different voltage levels, frequencies, or phases, depending on the specific requirements of the system.

NATO Supply Class 6130 plays a crucial role in ensuring the availability and standardization of electrical converters for military and defense purposes within NATO member countries. It helps in streamlining procurement processes and facilitating interoperability among different military systems.

If you need more specific information about converters in this class or any other related topic, feel free to ask!

NSN by Country NSN by Country

Frequently Asked Questions(FAQ) for Federal Supply Class 6130 Frequently Asked Questions(FAQ) for Federal Supply Class 6130

What is Federal Supply Class 6130?
FSC 6130 is the Federal Supply Class(formally known as NATO Supply Classification Class NSC 6130) in the USA for supply items codified in the category of Converters, Electrical, Nonrotating.
What is NATO Supply Classification Class 6130?
NSC 6130 is the NATO Supply Classification Class (also known as Federal Supply Class FSC 6130 in the USA) for supply items codified in the category of Converters, Electrical, Nonrotating.
Which Federal Supply Group is FSC 6130 in?
FSC 6130 is in Federal Supply Group(FSG) 61 which contains .
Which NATO Supply Classification Group is NSC 6130 in?
NSC 6130 is in NATO Supply Classification Group(NSG) 61 which contains .

Supply Items Included in Federal Supply Class 6130 Supply Items Included in Federal Supply Class 6130

What is a Power Supply Assembly? 3411 Items
A Power Supply Assembly is two or more independent power supplies having a common mounting or mounted on each other.
What is a Metallic Rectifier? 4846 Items
A Metallic Rectifier (RECTIFIER,METALLIC) is an electrical item (the working element of which is constructed essentially of metallic substances) which changes alternating current to direct current by the rectifying action occurring at the junction interface between a metallic conductor and a semiconductor. Excludes sets of metallic rectifiers which are not rated for rectifying capabilities but are used as suppressors. For items containing germanium or silicon, see SEMICONDUCTOR DEVICE (1), DIODE; SEMICONDUCTOR DEVICE SET and RECTIFIER, SEMICONDUCTOR DEVICE. For a complete power supply utilizing metallic rectifiers, see POWER SUPPLY.
What is an Electronic Frequency Converter? 573 Items
An Electronic Frequency Converter (CONVERTER,FREQUENCY,ELECTRONIC) is an electronic device having frequency mixing circuits and an integral oscillator which mixes the incoming frequency(ies) with the oscillator frequency, the resultant frequency(ies) being a combination of the two sources. Includes equipment that performs these functions at either radio or power line frequencies. Excludes items that change frequency by means of rotating equipment or rectifier and switching or keying circuitry.
What is a Static Frequency Converter? 387 Items
A Static Frequency Converter (CONVERTER,FREQUENCY,STATIC) is an item utilizing electron tubes, transistors, and/or semiconductor devices forming rectifier and electronic keying or switching circuitry, that is inserted between a load designed to operate at one frequency and a power supply line rated at another frequency. For items performing the same function by heterodyne action at either radio or power line frequencies, see CONVERTER, FREQUENCY, ELECTRONIC. For items that perform this function by means of rotary equipment, see MOTOR-GENERATOR. See also DIVIDER-MULTIPLIER, FREQUENCY; FREQUENCY DIVIDER; FREQUENCY MULTIPLIER and MIXER STAGE, FREQUENCY.
What is a Battery Charger? 10039 Items
A Battery Charger (CHARGER,BATTERY) is a device consisting of one or more components utilizing an alternating or direct current source to reactivate batteries in which reversible chemical reactions occur. Use only for devices containing resistors, metallic, or electronic type rectifiers or vibrators and which are specifically designed for the purpose of charging batteries. May include filters, meters, load contactor and alarm circuits. May include battery charging switchboards which are supplied with integral or external means of rectification.
What is a Power Supply Subassembly? 4104 Items
A Power Supply Subassembly is two or more different types of items having a common mounting or mounted on each other which together form a portion of a power supply but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
Cover,Power Supply 785 Items
What is a Power Supply? 72012 Items
A Power Supply is a component which converts available alternating current or direct current electrical power into a form required to operate another component or set. The item may consist of a combination of an INVERTOR, VIBRATOR; VIBRATOR, INTERRUPTER; VIBRATOR, SELF-RECTIFYING; INVERTOR, POWER, STATIC; with a transformer and rectifier(s) employing electron tubes, semiconductor diode or metallic (dry disc) type components, or the synchronized secondary contact(s) of a VIBRATOR, SELF-RECTIFYING; or may consist of electron tubes, semiconductor diode or metallic (dry disc) type rectifiers and capacitors in transformerless (alternating current-direct current type) circuits which may be of the voltage-multiplier type. The item may incorporate a FILTER, DIRECT CURRENT POWER and provisions for regulation of input and/or output voltage. The item may have special input, output, control or other facilities for applications in specialized environments such as medical, dental or other operations. Excludes battery chargers and rotating machinery types of items, such as motor generators and dynamotors.
What is an Interrupter Vibrator? 103 Items
An Interrupter Vibrator (VIBRATOR,INTERRUPTER) is an electromechanical device which uses a coil operated switching mechanism to convert a direct current input into a pulsating direct current output of the same value. The direct current input is periodically interrupted at the resonant frequency of a coil driven vibrating armature (reed). The resultant pulsating direct current output produces an inherent alternating current component necessary for ultimate purposes of transformation. It does not include a means of amplification or rectification. For items designed to operate over a wide and comparatively high frequency range and whose drive coil may be excited from either an alternating current or a direct current, see CHOPPER, ELECTRONIC.
What is a Self-Rectifying Vibrator? 63 Items
A Self-Rectifying Vibrator (VIBRATOR,SELF-RECTIFYING) is an electromechanical device which interrupts the direct current input by means of a coil-driven vibrating armature (reed) whose contacts alternately open and close the direct current circuit. It is equipped with a second set of contacts which operate in synchronism with the first set and are mounted on either the same or a separate (split) armature to rectify the stepped-up alternating current voltage obtained from an external transformer secondary to produce a pulsating direct current output. For items designed to operate over a wide and comparatively high frequency range and whose coil may be excited from either an alternating current or a direct current, see CHOPPER, ELECTRONIC.
What is a Vibrator Armature? 13 Items
A Vibrator Armature (ARMATURE,VIBRATOR) is an item which is the pivoted or spring-mounted ferromagnetic portion of a vibrator, and which moves to break and/or make an electrical circuit in response to electromagnetic changes.
What is a Vibrator Inverter? 118 Items
A Vibrator Inverter (INVERTER,VIBRATOR) is a device which utilizes a VIBRATOR, INTERRUPTER and associated transformer or other inductive coil device to convert a direct current input into a stepped-up alternating current output. The direct current source is chopped (or inverted) to produce a square wave output. For items of similar design, but without the associated transformer function, see VIBRATOR, INTERRUPTER.
What is a Control-Power Supply? 28 Items
A Control-Power Supply is a component which performs the dual function of controlling the operation of and supplying power to one or more associated components.
What is a Power Supply Control? 910 Items
A Power Supply Control (CONTROL,POWER SUPPLY) is a component which determines the mode of operation of one or more power supplies.
What is a Metallic Rectifier Holder? 14 Items
A Metallic Rectifier Holder (HOLDER,METALLIC RECTIFIER) is excludes items designed to accommodate plug-in type metallic rectifiers. See also BRACKET, ANGLE.
What is a Power Supply Adapter? 1120 Items
A Power Supply Adapter (ADAPTER,POWER SUPPLY) is an adapter which provides facilities for electrically connecting one or more power supplies to another component.It may have additional facilities for supporting and securing electrical/electronic equipment to an aircraft, vehicle or other mobile equipment.
Case,Power Supply 425 Items
What is a Battery Power Supply? 1344 Items
A Battery Power Supply is an item designed to contain one or more batteries and other control parts. It may contain the battery(ies), but must contain the control parts, which are used for controlling the output voltage(s) and/or activation of the battery(ies). It is a self-contained unit that provides for a direct current (DC) output.The control parts include items, such a remote control units.Excludes CHARGER, RADIAC DETECTOR.
What is a Power Supply Set? 1149 Items
A Power Supply Set is a collection of items, two or more being major electronic components, which utilizes electronic, vibrator or metallic type rectifiers, and usually associated filter systems, to provide electrical power and may also provide additional facilities such as control and distribution of the electrical power.
Control,Power Supply Set 45 Items
What is a Metallic Rectifier Set? 35 Items
A Metallic Rectifier Set (RECTIFIER SET,METALLIC) is a grouping of two or more separate metallic rectifiers. For items on a common mounting or mounted on each other, see RECTIFIER ASSEMBLY, METALLIC. For complete power supplies utiliziing metallic rectifiers, see POWER SUPPLY.
What is a Metallic Rectifier Assembly? 470 Items
A Metallic Rectifier Assembly (RECTIFIER ASSEMBLY,METALLIC) is two or more individual rectifiers having a common mounting or mounted on each other, or two or more individual rectifiers fabricated into a common inseparable body. Each rectifier must have individual ratings. For rectifiers with an overall circuit rating, see RECTIFIER, METALLIC. See also RECTIFIER SET, METALLIC.
What is a Dummy Battery Power Supply? 10 Items
A Dummy Battery Power Supply is an inert item designed to be used in place of a BATTERY POWER SUPPLY.
What is a Static Power Inverter? 2938 Items
A Static Power Inverter (INVERTER,POWER,STATIC) is an item that changes a direct current input into a single or multiple phase alternating current output, by the combined action of oscillators, semiconductor devices, magnetic amplifiers, phase splitters, and the like. For items that perform the same function by means of rotating machine techniques, see MOTOR-GENERATOR. See also CONVERTER, FREQUENCY, STATIC.
What is a Battery Charger Control? 124 Items
A Battery Charger Control (CONTROL,BATTERY CHARGER) is an item that determines the mode of operation of one or more battery chargers.
What is a Battery Charger Subassembly? 248 Items
A Battery Charger Subassembly (CHARGER SUBASSEMBLY,BATTERY) is two or more different types of items having a common mounting or mounted on each other which together form a portion of a CHARGER, BATTERY but which in itself is not a complete functioning item and cannot be assigned a more definite item name.
What is a Static Potential Converter? 1183 Items
A Static Potential Converter (CONVERTER,POTENTIAL,STATIC) is an item designed to make an electrical circuit in conjunction with electronic components such as transistors, semiconductors and rectifiers. It is mounted between a load operating at a rated voltage and a power supply system operated at a specific voltage. Excludes TRANSFORMER (1), POTENTIAL.
What is a Static Potential Converter Subassembly? 55 Items
A Static Potential Converter Subassembly (CONVERTER SUBASSEMBLY,POTENTIAL,STATIC) is two or more different types of items having a common mounting or mounted on each other, which together form a portion of a CONVERTER, POTENTIAL, STATIC, but which in itself is not a complete functioning item. Not to be used if a more specific item name exists.
What is a Battery Analyzer-Charger? 175 Items
A Battery Analyzer-Charger (ANALYZER-CHARGER,BATTERY) is an item which primarily maintains rechargeable batteries by analyzing, charging, rejuvenating, reconditioning, and/or testing them. It will display remaining amphere-hours in cells. It may be used as a power supply in lieu of the actual powering device (battery).
What is a Battery Charging Set? 140 Items
A Battery Charging Set (CHARGING SET,BATTERY) is two or more CHARGER, BATTERY with accessories mounted on a common mounting designed for automatic maintenance free restoration (charging) or buffering.
What is a Power Supply Assembly Bag? 33 Items
A Power Supply Assembly Bag (BAG,POWER SUPPLY ASSEMBLY) is a fabric container used to store power sources, such as BATTERIES as modified, generators and the like. Provides protection from dirt and damage. See also BAG, TEXTILE. Excludes CASE (2), POWER SUPPLY and BAG, SOLAR PANEL ASSEMBLY.
What is a Battery Discharger? 53 Items
A Battery Discharger (DISCHARGER,BATTERY) is an item which completely discharges batteries to render them non-reactive.
What is a Dual Function Power Conversion Unit? 35 Items
A Dual Function Power Conversion Unit (POWER CONVERSION UNIT,DUAL FUNCTION) is an item designed to use alternating current to run an electrical motor for an air conditioning compressor, and also designed to convert alternating current to direct current to run various other electrical equipment as applicable.
What is a Ruggedised Ac Uninterrupted Power Supply System? 469 Items
A Ruggedised Ac Uninterrupted Power Supply System is an electrical equipment that is used to protect and condition the supply of AC electrical power before it is consumed by host(s). The type of electrical output from the AC UPS is AC. Its primary components are an internal battery pack, battery charger, and noise & surge suppression circuitry. The internal battery pack is used to sustain the host(s) when the AC supply fails. External battery packs may be added to the UPS in order to extend the period of sustenance.
What is a Ruggedised Dc Uninterrupted Power Supply System? 37 Items
A Ruggedised Dc Uninterrupted Power Supply System is an electrical equipment that is used to protect and condition the supply of AC and/or DC electrical power before it is consumed by a host(s). Its primary components are an internal battery pack, battery charger, inverter, and noise and surge suppression circuitry. The internal battery pack is used to sustain the host(s) when the AC or DC supply fails. External battery packs may be added in order to extend the period of sustenance. The UPS is ruggedised to military standards for use in field environments.
What is a Battery Power Source? 276 Items
A Battery Power Source is an item designed to contain one or more rechargeable batteries, charging electronics, power transfers, and protection controls. It may also function as a power conditioner and contain recharge capability when placed in line with other power sources.
What is an Electric Power And Distribution Equipment Modification Kit? 63 Items
An Electric Power And Distribution Equipment Modification Kit (MODIFICATION KIT,ELECTRIC POWER AND DISTRIBUTION EQUIPMENT) is an item or collection of items employed to modify electrical power and distribution equipment.
What is a Battery Charger Adapter? 407 Items
A Battery Charger Adapter (ADAPTER,BATTERY CHARGER) is an adapter designed to enable the electric connection of a CHARGER, BATTERY (00480) with one or more BATTERY, STORAGE (00013) of identical or different construction.
What is a Battery Charger Cover? 60 Items
A Battery Charger Cover (COVER,BATTERY CHARGER) is a cover made of plastic or metal, designed to enclose completely or in part one or more CHARGER, BATTERY (00480) and to protect it/them against dust, humidity, and the like. It may be equipped with mounting fixtures.
What is an Inverter Subassembly? 139 Items
An Inverter Subassembly is two or more different types of items, having a common mounting or mounted on each other which together form a portion of an INVERTER (as modified). In itself it is not a complete functioning item and cannot be assigned a more definite item name.
What is a Direct Current To Direct Current Converter? 668 Items
A Direct Current To Direct Current Converter (CONVERTER,DIRECT CURRENT TO DIRECT CURRENT) is a device which converts direct current of one voltage to direct current of another voltage.
What is a Power Distribution Console? 122 Items
A Power Distribution Console (CONSOLE,POWER DISTRIBUTION) is a console specifically designed to distribute and control electrical power. It includes equipment to supply either alternating or direct current of various output characteristics.
What is a Coupler-Power Supply? 43 Items
A Coupler-Power Supply is a component having the dual function of a coupler and a POWER SUPPLY. The coupler and POWER SUPPLY are used with associated components, and may be used with each other.
What is a Static Frequency Converter Subassembly? 12 Items
A Static Frequency Converter Subassembly (CONVERTER SUBASSEMBLY,FREQUENCY,STATIC) is two or more different types of items having a common mounting or mounted on each other, which together form a portion of a CONVERTER,FREQUENCY,STATIC but which in itself is not a complete functioning item. Not to be used if a more specific item name exists.
What is an Uninterruptible Power Supply? 1651 Items
An Uninterruptible Power Supply (POWER SUPPLY,UNINTERRUPTIBLE) is an item that provides continuous backup power to electronic devices in the event of a utility power dip or blackout. It generally contains a battery and a power inverter that provides the necessary backup power in the event of a loss of normal input utility power. It may also contain a power line filter or power line conditioning devices. Excludes power supplies without standby power, electrical power inverers, and batteries.

Stock Items From Supply Class 6130 Stock Items From Supply Class 6130 Page 42of 329

009873254
PM14-5-0-375AT
RNCC: 3 | RNVC: 2
A15106-054
RNCC: 5 | RNVC: 2
009872606
380A570G01
RNCC: 3 | RNVC: 2
380A570G01
RNCC: 5 | RNVC: 2
009867667
104762REVB
RNCC: 3 | RNVC: 2
009867604
1225786
RNCC: 3 | RNVC: 2
61-996
RNCC: 5 | RNVC: 2
009864687
LT2095M
RNCC: 3 | RNVC: 9
MTL60414
RNCC: 5 | RNVC: 2
MTL60414
RNCC: 5 | RNVC: 2
009858245
SCDL496820
RNCC: 3 | RNVC: 2
SMD497653
RNCC: 5 | RNVC: 2
PP4339TKQ2
RNCC: 5 | RNVC: 2
201-45319
RNCC: 5 | RNVC: 9
009857889
7284800
RNCC: 3 | RNVC: 9
7284800
RNCC: 5 | RNVC: 2
009857867
E4583-5020G1
RNCC: 3 | RNVC: 2
PP4120FPA28
RNCC: 5 | RNVC: 2
009855345
40023761
RNCC: 3 | RNVC: 9
009850745
0N123977
RNCC: 3 | RNVC: 2
0N097257
RNCC: 5 | RNVC: 2
009848318
C36-50
RNCC: 3 | RNVC: 2
009845221
S2V1P
RNCC: 3 | RNVC: 2
219261
RNCC: 5 | RNVC: 9
009834351
976J695-4
RNCC: 3 | RNVC: 2
976J695-4
RNCC: 5 | RNVC: 9
009832226
17R2030
RNCC: 3 | RNVC: 2
009831803
SC36-1M
RNCC: 3 | RNVC: 2
009817231
40021948
RNCC: 3 | RNVC: 2
009815575
550-7935-005
RNCC: 3 | RNVC: 9
550-7935-005
RNCC: 5 | RNVC: 9
009815574
565-3123-005
RNCC: 3 | RNVC: 9
565-3123-005
RNCC: 5 | RNVC: 9
009814248
1568015
RNCC: 3 | RNVC: 2
009807132
35179G1
RNCC: 3 | RNVC: 2
009803987
1951137
RNCC: 3 | RNVC: 2
BS-1951137
RNCC: 5 | RNVC: 9
009800588
332852-915
RNCC: 3 | RNVC: 2
009797051
55142-107
RNCC: 3 | RNVC: 2
009796014
4201168
RNCC: 3 | RNVC: 2
009796013
4201167
RNCC: 3 | RNVC: 2
009789828
2402078P1
RNCC: 3 | RNVC: 2
2402078
RNCC: 3 | RNVC: 2
009786703
802B
RNCC: 3 | RNVC: 9
009781000
126-1227-010
RNCC: 1 | RNVC: 2
LA50-03BM
RNCC: 3 | RNVC: 9
009775944
581328-100
RNCC: 3 | RNVC: 2
581328-100REVA
RNCC: 3 | RNVC: 2
581328-100REVA
RNCC: 5 | RNVC: 2
009773484
IC5950A110A
RNCC: 3 | RNVC: 2
129B6774SH110A
RNCC: 5 | RNVC: 2
009773488
IC5950A100A
RNCC: 3 | RNVC: 2
129B6774SH100A
RNCC: 5 | RNVC: 2
009773251
22034
RNCC: 3 | RNVC: 2
009772981
240792
RNCC: 3 | RNVC: 2
009772980
240791
RNCC: 3 | RNVC: 2
009765939
29-26816-1
RNCC: 3 | RNVC: 2
009765937
29-26816-3
RNCC: 3 | RNVC: 2
009765935
29-26818-1
RNCC: 3 | RNVC: 2
009755153
350-500B
RNCC: 3 | RNVC: 2
350-500A
RNCC: 5 | RNVC: 2
350-500B
RNCC: 5 | RNVC: 9
350-500A
RNCC: 5 | RNVC: 9
009752790
588638-1
RNCC: 3 | RNVC: 2
009751046
524460
RNCC: 3 | RNVC: 2
U75HF
RNCC: 5 | RNVC: 9
009746745
PM28-0-6-0AT
RNCC: 3 | RNVC: 2
A15106-023
RNCC: 7 | RNVC: 2
009746748
LQ35-2A1
RNCC: 3 | RNVC: 9
464-0146-003
RNCC: 5 | RNVC: 2
009746743
PM-152.0-0.100AT
RNCC: 3 | RNVC: 2
A15106-018
RNCC: 7 | RNVC: 2
009746744
PM28-0-3-0T
RNCC: 3 | RNVC: 2
A15106-021
RNCC: 7 | RNVC: 2
009746751
PAX15-0-75C110V60CPS
RNCC: 3 | RNVC: 2
009746747
PM9-8-0-200ATT
RNCC: 3 | RNVC: 2
A15106-017
RNCC: 7 | RNVC: 2
009726851
12500-707
RNCC: 3 | RNVC: 2
009721349
816480-1
RNCC: 3 | RNVC: 2
009716429
522-8909-004
RNCC: 3 | RNVC: 2
CA4517
RNCC: 5 | RNVC: 2
526R2
RNCC: 5 | RNVC: 2
009716027
LMG48-2198
RNCC: 3 | RNVC: 2
009712493
2282033
RNCC: 3 | RNVC: 2
L200013089
RNCC: 5 | RNVC: 2
009702873
55150-107
RNCC: 3 | RNVC: 2
009702874
55151-107
RNCC: 3 | RNVC: 2
RTML28-50RT
RNCC: 5 | RNVC: 9
009694201
CV1725U
RNCC: 3 | RNVC: 2
009685437
11040453-1
RNCC: 3 | RNVC: 2
C703940003
RNCC: 5 | RNVC: 2
009685359
403KA3
RNCC: 3 | RNVC: 2
RAC403KA2
RNCC: 3 | RNVC: 2
RAC403KA3
RNCC: 5 | RNVC: 2
RAC403KA3
RNCC: 5 | RNVC: 2
E1828M2-13
RNCC: 5 | RNVC: 2
009684902
1039-8006
RNCC: 3 | RNVC: 2
1039-8006
RNCC: 5 | RNVC: 2
1039-8006
RNCC: 5 | RNVC: 9
009684905
1039-8004
RNCC: 3 | RNVC: 2
1039-8004
RNCC: 5 | RNVC: 2
009684904
1039-8003
RNCC: 3 | RNVC: 2
1039-8003
RNCC: 5 | RNVC: 2
009684903
1039-8002
RNCC: 3 | RNVC: 2
1039-8002
RNCC: 5 | RNVC: 2
009684901
11020-5002-3
RNCC: 3 | RNVC: 2
1020-5002-3
RNCC: 5 | RNVC: 2
009680320
1020-5002-2
RNCC: 3 | RNVC: 2
009680321
1020-5002-1
RNCC: 3 | RNVC: 2
009680323
11039-8007
RNCC: 3 | RNVC: 2
009679430
502419-100
RNCC: 3 | RNVC: 2
SB2057MSQ56
RNCC: 5 | RNVC: 2
502419-100
RNCC: 5 | RNVC: 2
009677779
1039-8005
RNCC: 3 | RNVC: 2
1039-8005
RNCC: 3 | RNVC: 2
009672610
1880327-1
RNCC: 3 | RNVC: 2
1880327-1
RNCC: 5 | RNVC: 9