Model: AN340C516

Hexagon Plain Nut

Properties:

Thread Class
2b
Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
Between 0.208 inches and 0.225 inches
Width Across Flats
Between 0.545 inches and 0.562 inches
Thread Series
Unc
Thready Qty Per Inch (tpi)
18
Thread Size
0.312 inches
Countersink Angle
110.0 degrees nut
Bearing Surface Type
Flat
Material
Steel comp 431 or steel comp 303
Material Specification
Astm a276 assn standard 1st material response or sae j405, uns s43100 assn standard 1st material response or mil-s-7720, comp 303 military specification 2nd material response or sae j405, uns s30300 assn standard 2nd material response
Surface Treatment
Passivate
Surface Treatment Specification
Qq-p-35 federal specification single treatment response
Specification Data
81348-ff-n-836 government specification and 88044-an340 government standard
Nondefinitive Specification/std Data
2 type and 4 style and 5/16-18unc size
Departure From Cited Document
As modified by matl
NSN
5310-00-266-0514
Part Number
AN340C516
Description
Nut,plain,hexagon
CAGE
88044

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 AN340C516 NSN 5310-00-266-0514

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
01857
FIIG:
A021A0
Concept No.:
1
App. Key:
AG
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
U
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
50.0
WCC:
573
TCC:
Z
SHC:
9
ACC:
Construction Materials

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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

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