Model: 7978-556R51PC23

Hexagon Plain Nut

Properties:

NSN

5310-00-768-0321

Part Number

7978-556R51PC23

Description

Nut,plain,hexagon

CAGE

81316

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part 7978-556R51PC23 NSN 5310-00-768-0321

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01857

FIIG:

A021A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

End Items End applications NSN 5310-00-768-0321 is a component of

Tomahawk Missile
B-1 Aircraft Support Equipment
Satellite An/gsc-39(v)1 Communications Terminal
Fire Pumps
Stream (std. Tensioned Replenishment At Sea Method)
Defense Communications Radio (9 Systems)
An-tcc-77) An/tps-068 An/tcc-76 Def Comm Meteorl (an/tmq-028
Hc-130) Ec-130e Mc-130h Sof ( Ac-130h Aircraft
Phoenix (aim-54) Air-to-air Missile
000871609
Searchlight
013498078
Signal Data Converter
010631915
Flight Lin Test Set
011178692
Training Device Gun Mount
012546307
Transmitter Group
013527234
Electronic Systems Test Set
002755798
Shouldered Shaft
010631574
Antenna Elevator Group
001189661
Antenna Group
010269621
Vpa Assembly
007520603
Radar Set
009420856
Radio Transmitter
012554218
Receiver Group
013511480
Data Processing Terminal
004343644
Speech Equipment
008920871
Radio Set
005536061
Teletypewriter
010924907
Radio Receiver-transmitter
014373996
Semitrailer Mounted Electric Power Plant
009442452
Radar Set
013180641
Transition Unit Fra
005628900
Video Amplifier
010928074
Landing Control Central
005575970
Teletypewriter Set
013180642
Key Distribution Ce
014352305
Communication Distribution Processor
009499909
Radio Set Control Group
013613888
Line Termination Unit
013704912
Fire Fighting Trailer
000239841
Liquid Argon-nitrogen-oxygen Storage Tank
013704912
Fire Fighting Trailer
013613887
Line Termination Unit
009022548
Air Conditioner
005663067
Signal Generator
011083651
Electrical Power Test Set
013704912
Fire Fighting Trailer
013704912
Fire Fighting Trailer
013867729
Aircraft Engine Maintenance Stand
009594326
Remot Tone Receiver
010288425
Multiplexer
013658783
Audio Management System Processor
010288364
High Speed Buffer
013825833
Expandable Shelter
009078300
Telegraph Terminal
005382736
Semitrailer Mounted Petroleum Laboratory
011481772
Meteorological Data
013655599
Surveillance Information Processing Center
013093039
Multiposition Maintenance Fixture Holder
010288392
Manual Telephone Central Office
010288393
Manual Telephone Central Office
013167203
Aircraft Maintenance Fixture
010321694
Telephone System
013055870
Plastic Strip
013557350
Electronic Communications Equipment Case
011026307
Satellite C Central
013659600
Status Indicator
013655612
Data Distribution System
013659601
Communications Processor
012099146
Radar Set
005924645
Air Conditioner
013798884
Hydraulic Puller
012679478
Radio Set
012348499
Aircraft Engine Accessories Maintenance Stand
013234779
Nonexpandable Shelter
009082003
Control Transmitter
012056213
Antenna
014337063
Liquid Fuel Filter-separator
004396242
Full Tracked Recovery Vehicle
014075107
Hydraulic Pusher
009083132
Interconnecting Box
013701421
Signal Data Processor
002214939
Transportable Shelter Lift Dolly Set
013888686
Hydraulic Pusher
010705685
Satellite Communica
013706648
Manifold Valve Assembly
006838595
Space Heater
009083133
Interconnecting Box
009857574
Distribution Box
013746643
Satellite Signals Navigation Set
014442717
Antenna Assembly
013687798
Servo Cyli Manifold
013113823
Mechanical Drive Housing
010989110
Pressure Fluid Filter Unit
011077155
Utility Truck
014445370
Signal Scanner
013260101
Signal Data Converter
011186959
Aircraft Maintenance Fixture
010709415
Radar Set
014442719
Node Center Switch
014450948
Operations Group
014445385
Large Extension Nod
014445393
Antenna Synchro
013260710
Commu Switching Set
011152869
Transformer Assembly
013199032
Trailer Mounted Diesel Engine Generator Set
007386342
Trailer Mounted Diesel Engine Generator Set
012747387
Diesel Engine Generator Set
012791609
Multiposition Maintenance Fixture Holder
014513046
Power Supply
009857899
Power Supply
011135344
Communications Term
012374392
Semitrailer Mounted Engine Test Stand
010397629
Antenna
007520603
Radar Set
012747390
Diesel Engine Generator Set
013260712
Communica Processor
014450949
Operations Group
001335879
Power Supply
012169818
Aircraft Guided Missile Launcher
009194800
Radio Teletyp Modem
014460412
Low Probability Intercept-link Processor
010647880
Electrical Special Purpose Cable Assembly
011570996
Air Conditioner
012099144
Radar Set
010769947
Antenna Group
002531513
Tactical Imagery In
001342599
Telephone Set
010776249
Communication System
011560572
Ex Quick Erect Mast
004396242
Full Tracked Recovery Vehicle
009994935
Nonexpandable Shelter
011571682
Power Distribution-
002897515
Low Bed Semitrailer
011448396
Aircraft Engine Maintenance Machining Fixture
013881454
Communication System
000090129
Antenna
003079376
Radio Receiving Set
007870304
Oscilloscope
013293356
Digital Computer
013134214
Trailer Mounted Electric Power Plant
013875443
Cargo Trailer
013294803
Lg Exten Node Switc
011265557
Antenna
002504381
Liquid Fuel Filter-separator
013881464
Radio Set
005190103
Power Supply
013294805
Node Center Switch
000186868
Portable Photographic Darkroom
010079403
Satellite Communica
009283382
Multiplexer
010079401
Satellite Communica
010828404
Voice Terminal
013910187
Secu Voice Ky 99a
000331389
Trailer Mounted Diesel Engine Generator Set
013294807
Operations Group
001387990
Radio Receiver-transmitter
004020748
Motion Picture Camera
009147054
Hydraulic System Components Test Stand
014003110
Surveillance Information Processing Center
013301864
Management Facility
010480295
Angle Drive Unit
013294811
Switching Group
014003111
Surveillance Information Processing Center
010079429
Antenna Group
014003114
Surveillance Information Processing Center
010123313
Liquid Fuel Filter-separator
011236827
Cargo Truck
012885510
Antenna Group
010079427
Antenna Group
013301865
Switching Group
014003215
Surveillance Information Processing Center
012466826
Telephone Set
005430012
Telephone Set
013301866
Operations Group
001418050
Cargo Trailer
010057864
Simulator Assembly
010606690
Modem Test Set
013134283
Trailer Mounted Diesel Engine Generator Set
011722923
Amplifier-control Group
014123314
Signal Processing Shelter
004427119
Liquid Argon-nitrogen-oxygen Storage Tank
013048597
Electron Tube Liquid Cooler
014124386
Satellite Communications Shelter
014125904
Transportable Relay Facility
009037371
Tank Truck
014125906
Data Link Communication Shelter
013134215
Trailer Mounted Electric Power Plant
012479118
Radio Receiver-transmitter
013075414
Ky 99 Minterm
008425326
Motorized Roller
012484760
014125877
Ground Tethered Satellite Relay Station
008425326
Motorized Roller
010100787
Trailer Mounted Bakery Plant
014125875
Test Operator Shelter
009350033
Radio Receiver-transmitter
014125905
Satellite Communication System
010414590
Self-propelled Medium Howitzer
008425326
Motorized Roller
013094494
Communications Modem
010628194
Communicat Terminal
011740272
Communication System Control Group
014125907
Ground Tethered Satellite Relay System Deployment Kit
009353850
Photographic Contact Printer
013320741
Trailer Mounted Diesel Engine Generator Set
000698795
Telegraph-telephone Signal Converter
009355071
Radio Set
012503719
Air Conditioner
010887337
Antenna Assembly
012512720
Antenna Group
014147495
Data Link Processor
014147501
Audio Management System Processor
009355416
Air Conditioner
014147500
Surveillance Information Processing Center
014147496
File Server Processor
014147503
Surveillance Information Processing Center
012996035
Trailer Mounted Electric Power Plant
004244370
Electrical Pulse Analyzer
012512758
Optoelectronic Display
013498064
Communications Central
014147499
Direction Finding Processor
014147498
Data Link Processor Interface
014147506
Surveillance Information Processing Center
014151245
Satellite Communication Subsystem
001681477
Communications Central
014147502
Surveillance Information Processing Center
014162887
Antenna
011178692
Training Device Gun Mount
011178692
Training Device Gun Mount
013134216
Trailer Mounted Electric Power Plant
010920892
Nonexpandable Shelter
011384746
Radar Tra Generator
014151246
Trailer Mounted Communications Antenna
014206621
Radio Set
004884865
Aircraft Engine Accessories Maintenance Stand

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Hours:	08:00-18:00 Eastern Standard Time
Phone:	+1 470-231-0824
Email:	Contact Form »

Schedule B and Export

Schedule B: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel