Model: 12-21818

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Nut Height
0.469 inches
Width Across Flats
1.250 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
14
Thread Size
0.875 inches
Material
Fiber locking insert
Material
Steel comp 1213 or steel comp 1115 or steel comp 1116 or steel comp 1117 or steel comp 1118 nut
Material Specification
Qq-s-633 federal specification all material responses nut
Surface Treatment
Cadmium or zinc nut
NSN
5310-00-050-3450
Part Number
12-21818
Description
Nut,self-locking,hexagon
CAGE
15879

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 12-21818 NSN 5310-00-050-3450

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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