Model: 1137-428

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Nut Style
Hexagon
Nut Height
Between 0.312 inches and 0.328 inches
Width Across Flats
Between 0.428 inches and 0.440 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unf
Thready Qty Per Inch (tpi)
28
Hardness Rating
Not rated
Thread Size
0.250 inches
Bearing Surface Type
Any acceptable
Material
Plastic polyamide locking insert
Material
Steel comp 1137 nut
Material Specification
66 federal standard single material response nut
Material Specification
Mil-n-25027 military specification single material response locking insert
Surface Treatment
Cadmium nut
Surface Treatment Specification
Qq-p-416, type 2, class 3 federal specification all treatment responses except insert
Specification Data
94135-12z2007 government standard
NSN
5310-00-543-4452
Part Number
1137-428
Description
Nut,self-locking,hexagon
CAGE
80020

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 1137-428 NSN 5310-00-543-4452

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:
UV
CRITL:
N

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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