Model: 254-6556644FNCOTM-A11

Hexagon Self-locking Nut

Properties:

Thread Class

Thread Direction

Left-hand

Locking Feature

Prevailing torque all metal design

Nut Style

Hexagon

Nut Height

Between 0.320 inches and 0.337 inches

Width Across Flats

Between 0.551 inches and 0.562 inches

Thread Series

Unc

Thready Qty Per Inch (tpi)

Thread Size

0.375 inches

Bearing Surface Type

Chamfered or washer faced

Material

Nickel alloy r-405

NSN

5310-01-389-9114

Part Number

254-6556644FNCOTM-A11

Description

Nut,self-locking,hexagon

CAGE

53711

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 254-6556644FNCOTM-A11 NSN 5310-01-389-9114

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05277

FIIG:

A021A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7508900000
SITC: 69975
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)