Model: 155678

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert or prevailing torque all metal design
Nut Style
Hexagon
Nut Height
0.312 inches
Width Across Flats
0.438 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
28
Thread Size
0.250 inches
Bearing Surface Type
Flat
Material
Fiber locking insert
Material
Steel nut
Material
Steel
Material Specification
Mil-m-20693 comp a type 1 military specification all material responses locking insert
Material Specification
Qq-s-633-canceled federal specification all material responses nut
Material Specification
Qq-s-633-canceled federal specification all material responses
Surface Treatment
Cadmium or zinc
NSN
5310-00-050-3339
Part Number
155678
Description
Nut,self-locking,hexagon
CAGE
71791

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 155678 NSN 5310-00-050-3339

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:
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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