Model: 31X30

Hexagon Plain Nut
Description:

2b thread class, right-hand , hexagon nut style, 0.427 inches nut height, 0.736 inches width across flats, unc thread series, 13 thread quantity per inch.

Special Features:

Matl steel sae uns k05802-b

Properties:

Thread Class
2b
Thread Direction
Right-hand
Nut Style
Hexagon
Nut Height
Between 0.427 inches and 0.448 inches
Width Across Flats
Between 0.736 inches and 0.750 inches
Thread Series
Unc
Thready Qty Per Inch (tpi)
13
Thread Size
0.500 inches
Bearing Surface Type
Chamfered or washer faced
Material
Steel
Material Specification
Astm a563, grade b assn standard single material response or sae j995, grade 2 assn standard single material response
Specification Data
81348-ff-n-836 government specification and 80204-ansi b18.2.2 professional/industrial association standard and 96906-ms35690/canceled/ government standard
Nondefinitive Specification/std Data
2 type and 4 style and 3 table and 1/2in. Size
Departure From Cited Document
Ff-n-836, paragraph 3.6 uncoated plain fin.
NSN
5310-00-010-2637
Part Number
31X30
Description
Nut,plain,hexagon
CAGE
83120

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 31X30 NSN 5310-00-010-2637

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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