Model: 548666 ITEM 78

Hexagon Self-locking Nut

Special Features:

W/nylon insert

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with nonmetallic insert

Nut Style

Hexagon

Nut Height

Between 0.318 inches and 0.469 inches

Width Across Flats

Between 0.553 inches and 0.565 inches

Tempurature Rating

250.0 degrees fahrenheit

Thread Series

Unc

Thready Qty Per Inch (tpi)

Thread Size

0.375 inches

Bearing Surface Type

Flat

Material

Plastic nylon locking insert

Material

Steel comp 303 nut

Material Specification

Ast d4066 assn standard single material response locking insert

Surface Treatment

Passivate except insert

NSN

5310-00-050-6646

Part Number

548666 ITEM 78

Description

Nut,self-locking,hexagon

CAGE

43689

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part 548666 ITEM 78 NSN 5310-00-050-6646

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05277

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:

713

TCC:

SHC:

ACC:

Construction Materials

End Items End applications NSN 5310-00-050-6646 is a component of

Close In Weapon System (ciws-phalanx)
Tomahawk Missile
Cargo/weapons Elevators
Jp-5 Aviation Fuels Systems
B-1 Aircraft Support Equipment
Fire Pumps
Stream (std. Tensioned Replenishment At Sea Method)
02n2 Systems
An-tcc-77) An/tps-068 An/tcc-76 Def Comm Meteorl (an/tmq-028
009169404
Air Conditioner
001270079
Oscilloscope
002295747
Latch Arm Assembly
011560411
Communications Term
012747392
Diesel Engine Generator Set
012230267
Power Supply
011560572
Ex Quick Erect Mast
012237543
Input-output Unit
013874520
Radio Repeater Set
013874544
Radio Repeater Set
011571682
Power Distribution-
013874593
Nonexpandable Shelter
012755061
Diesel Engine Generator Set
013874662
Nonexpandable Shelter
013874813
Nonexpandable Shelter
013874952
Radio Terminal Set
013875782
Nonexpandable Shelter
001172868
Nonexpandable Shelter
000014093
Nonexpandable Shelter
013876700
Radio Terminal Set
010828404
Voice Terminal
011619420
Radio Repeater Set
011619422
Radio Terminal Set
011631253
Nonexpandable Shelter
011633670
Nonexpandable Shelter
000331389
Trailer Mounted Diesel Engine Generator Set
011219558
Communications Term
011399859
Low Speed Full Tracked Tractor
001418050
Cargo Trailer
011689607
Satellite Communica
013048183
Trailer Mounted Diesel Engine Generator Set
010845293
Antenna-transceiver
013048597
Electron Tube Liquid Cooler
008920622
Radio Receiver-transmitter
005430012
Telephone Set
013448500
Cont Gp Operation
010969356
Cargo Carrier
010883791
Air Conditioner
011334195
Radio Set
013018250
Fork Lift Truck
013469317
Utility Truck
012512720
Antenna Group
011368745
Cargo Carrier
010897518
Satellite Communica
011820578
Guided Missile System Shop Equipment
011817175
Electronic Frequency Converter
004244370
Electrical Pulse Analyzer
012512758
Optoelectronic Display
013043069
Nonexpandable Shelter
014241023
Transportable Electronic Shop
001066445
Battery Charger
009499909
Radio Set Control Group
013696081
Cargo Carrier
011463260
Kg-84a
004343644
Speech Equipment
012591060
Spectrum Analyzer
012609945
Radio Set
013199032
Trailer Mounted Diesel Engine Generator Set
005756749
Frequency Standard
011481772
Meteorological Data
009078300
Telegraph Terminal
001172868
Nonexpandable Shelter
011483976
Radio Terminal Set
013234779
Nonexpandable Shelter
013726393
Trailer Mounted Diesel Engine Generator Set
013726394
Trailer Mounted Diesel Engine Generator Set
011483977
Radio Terminal Set
013260101
Signal Data Converter
011514109
Nonexpandable Shelter
011514110
Nonexpandable Shelter
002237548
Radio Set
009124251
Transportable Shelter Lift Dolly Set
001248678
Telephone Set
004651030
Diesel Engine Generator Set
012707788
Mobile Audio-visual
010920892
Nonexpandable Shelter

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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