Model: 21C1593-40

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Nut Style
Hexagon
Nut Height
0.153 inches
Width Across Flats
0.252 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unc
Thready Qty Per Inch (tpi)
40
Thread Size
0.125 inches
Bearing Surface Type
Chamfered or washer faced
Material
Plastic polyhexamethylene amide locking insert
Material
Steel comp 302 nut or steel comp 303 nut or steel comp 304 nut
Material Specification
Aisi, cond a or b assn standard all material responses nut
Material Specification
Mil-p-20693, type 1 military specification single material response locking insert
Surface Treatment
Passivate nut
Surface Treatment Specification
171, fin. 5.4.1 military standard single treatment response nut
NSN
5310-00-819-7229
Part Number
21C1593-40
Description
Nut,self-locking,hexagon
CAGE
07482

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 21C1593-40 NSN 5310-00-819-7229

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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