Model: 638673

Clinch Self-locking Nut

Properties:

Thread Class

3bg

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Pilot Diameter

Between 0.372 inches and 0.376 inches

Pilot Length

Between 0.124 inches and 0.130 inches

Counterbore Diameter

0.329 inches nut and 0.334 inches nut

Nut Style

Clinch

Nut Diameter

0.460 inches

Nut Height

0.492 inches

Nut Counterbore Depth

0.112 inches nut and 0.142 inches nut

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.312 inches

Material

Iron alloy 660

Material Specification

Ams 5735 assn standard single material response

Precious Material

Silver

Surface Treatment

Silver

Surface Treatment Specification

Ams 2410 assn standard single treatment response

NSN

5310-00-971-7242

Part Number

638673

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 638673 NSN 5310-00-971-7242

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:

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