Model: NAS1831-4C05

Hexagon Plain Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
Between 0.308 inches and 0.318 inches
Width Across Flats
Between 0.309 inches and 0.317 inches
Thread Series
Unc
Thready Qty Per Inch (tpi)
32
Thread Size
0.138 inches
Bearing Surface Type
Chamfered
Part Name Assigned By Controlling Agency
Navy special project
Material
Steel comp 4130 or steel comp 8630 or steel comp 8740
Material Specification
Mil-s-6758, cond f military specification 1st material response or mil-s-6050, cond f military specification 2nd material response or mil-s-6049, cond f military specification 3rd material response
Surface Treatment
Cadmium and chromate
Surface Treatment Specification
Qq-p-416, type 2, cl 2 federal specification single treatment response
Specification Data
80205-nas1831 professional/industrial association standard
NSN
5310-01-283-3507
Part Number
NAS1831-4C05
Description
Nut,plain,hexagon
CAGE
80205

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 NAS1831-4C05 NSN 5310-01-283-3507

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093470
UFC:
48940
LTL:
70.0
LCL:
--
WCC:
713
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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