Model: 638674

Clinch Self-locking Nut

Properties:

Thread Class

3bg

Thread Direction

Right-hand

Distance From Centerline To Flat

0.250 inches

Locking Feature

Prevailing torque all metal design

Pilot Diameter

0.335 inches

Pilot Length

0.165 inches

Nut Style

Clinch

Nut Diameter

0.425 inches

Nut Height

0.382 inches

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Hardness Rating

Between 33.0 rockwell c and 44.0 rockwell c

Thread Size

0.250 inches

Material

Iron alloy 660

Material Specification

Ams 5735 assn standard single material response

Precious Material And Location

External surface silver

Precious Material

Silver

Surface Treatment

Silver

Surface Treatment Specification

Ams 2411 assn standard single treatment response

NSN

5310-00-247-4799

Part Number

638674

Description

Nut,self-locking,clinch

CAGE

77445

A nut having a sleeve portion on its under side, which can be crimped or clinched to hold the item in place when inserted in a hole. An integral feature is incorporated for locking.

Part 638674 NSN 5310-00-247-4799

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15892

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:

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