Model: 421-4-25263-001

Hexagon Plain Nut

Properties:

Thread Direction

Right-hand

Nut Style

Hexagon

Nut Height

Between 3.7 millimeters and 4.0 millimeters

Width Across Flats

Between 7.85 millimeters and 8.00 millimeters

Thread Series

Thread Size

5.0 millimeters

Thread Pitch In Millimeters

0.80

Bearing Surface Type

Flat

Thread Tolerance Class

6h internal

Part Name Assigned By Controlling Agency

Navy special project

Material

Stainless steel

Surface Treatment

Passivate

Surface Treatment Specification

Qq+35 federal specification single treatment response

NSN

5310-01-361-3551

Part Number

421-4-25263-001

Description

Nut,plain,hexagon

CAGE

99207

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part 421-4-25263-001 NSN 5310-01-361-3551

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01857

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

093470

UFC:

48940

LTL:

70.0

LCL:

WCC:

713

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