Model: FFB571TYPEA4

Hexagon Castellated Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Nut Style

Castellated, hexagon

Nut Height

1.272 inches

Width Across Flats

1.875 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

1.250 inches

Bearing Surface Type

Chamfered or washer faced

Material

Steel

Surface Treatment

Cadmium and zinc

Nondefinitive Specification/std Data

A4 type

NSN

5310-00-176-8091

Part Number

FFB571TYPEA4

Description

Nut,plain,castellated,hexagon

CAGE

81348

A nut having 6 flat sides, flat on the bottom and having a slotted cylindrical or dome shaped upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, slotted, hexagon.

Part FFB571TYPEA4 NSN 5310-00-176-8091

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01854

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:

50.0

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