Model: H31-3

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Internal or external wrenching hexagon
Nut Height
0.188 inches
Width Across Flats
Between 0.365 inches and 0.377 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
32
Hardness Rating
Between 38.0 rockwell c and 48.0 rockwell c
Thread Size
0.190 inches
Bearing Surface Type
Chamfered
Material
Iron alloy 660
Material Specification
Ams 5525 assn standard single material response
Precious Material And Location
External surfaces silver
Surface Treatment
Silver
Surface Treatment Specification
Ams 2411 assn standard single treatment response
NSN
5310-00-168-2978
Part Number
H31-3
Description
Nut,self-locking,hexagon
CAGE
15653

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 H31-3 NSN 5310-00-168-2978

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05277
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
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:
S
ESD:
ESD:
MMAC:
SX
CRITL:
X

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:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093460
UFC:
48930
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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