Model: 50FC-428

Hex Castellated Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Nut Style

Castellated, hexagon

Nut Height

Between 0.300 inches and 0.320 inches

Width Across Flats

Between 0.430 inches and 0.439 inches

Tempurature Rating

Not rated

Thread Series

Unf

Thready Qty Per Inch (tpi)

Hardness Rating

Not rated

Thread Size

0.250 inches

Bearing Surface Type

Any acceptable

Material

Stainless steel

Material Specification

Qq-s-763 cmpsn 302/304, no. 1 finish federal specification single material response

Surface Treatment

Passivate

Surface Treatment Specification

Mil-f-14072 military specification single treatment response

NSN

5310-01-380-2961

Part Number

50FC-428

Description

Nut,self-locking,castellated,hex

CAGE

70318

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. An integral feature is incorporated for locking on the threads of a mating member. The slots when used in conjunction with a solid or split (cotter) pin, act as an extra "fail safe" feature in critical applications. Excludes nut (1), self-locking, slotted, hexagon.

Part 50FC-428 NSN 5310-01-380-2961

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29725

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: 7318160000
SITC: 69421
End Use: Finished metal shapes
NAICS: 332722
USDA: 1

Freight Class: Nuts of iron or steel