Model: 55K1-054

Cap Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design or prevailing torque with nonmetallic insert
Nut Style
Cap
Nut Height
0.612 inches
Width Across Flats
0.563 inches
Tempurature Rating
Between -65.0 degrees fahrenheit and 250.0 degrees fahrenheit
Thread Series
Unjf
Thready Qty Per Inch (tpi)
24
Thread Size
0.312 inches
Bearing Surface Type
Chamfered or washer faced
Material
Plastic polyamide locking insert
Material
Steel except insert
Surface Treatment
Cadmium except insert
Surface Treatment Specification
Qq-p-416, type 2, class 2 federal specification single treatment response except insert
NSN
5310-00-234-8726
Part Number
55K1-054
Description
Nut,self-locking,cap
CAGE
019L2

A nut internally threaded from one end, and completely enclosed on the opposite end. The outer periphery parallel to the threaded axis may be square, cylindrical, hexagonal, octagonal, dodecagonal or the like and taper to a cone or dome shape on the closed end. An integral feature is incorporated for locking on the threads of a mating memeber. Excludes nut (1), stamped.

Part 55K1-054 NSN 5310-00-234-8726

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05275
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:
A
ESD:
ESD:
MMAC:
XZ
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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