Model: 421D4

Hexagon Slotted Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Nut Style

Slotted, hexagon

Nut Height

0.875 inches

Width Across Flats

2.625 inches

Thread Series

Thready Qty Per Inch (tpi)

Thread Size

1.750 inches

Bearing Surface Type

Chamfered

Material

Steel comp 1212 or steel

Material Specification

Qq-s-637, comp b1121 federal specification 1st material response or sae 1114 assn standard 2nd material response

NSN

5310-00-208-2831

Part Number

421D4

Description

Nut,plain,slotted,hexagon

CAGE

56442

A nut having a flat bearing surface and 6 flat sides with slots in its upper portion. It is designed to provide positive locking when used with a solid or split (cotter) pin. Excludes nut (1), plain, castellated, hexagon.

Part 421D4 NSN 5310-00-208-2831

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01859

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