Model: 120-279M

Mater Aircraft Stud

Special Features:

Material: alloy steel 4340 per ams6414 or 8740 per ams6322 or ams6325 or ams6327, heat treatment 180-200 ksi ultimate tensile strength per ams2759, finish: chemical black oxide per mil-dtl-13924

Properties:

Thready Qty Per Inch (tpi)

18 nut thread a

Thready Qty Per Inch (tpi)

24 nut thread b

Thread Size

0.3125 inches nut thread a

Thread Size

0.3125 inches nut thread b

Part Name Assigned By Controlling Agency

Stud, straight, vented, .3125-18 x .3125-24, 180 ksi, special

Material

Steel comp 4340 or steel comp 8740

Material Specification

Ams6414 assn standard single material response or ams6322 assn standard single material response or ams6325 assn standard single material response or ams6327 assn standard single material response

Surface Treatment

Oxide

Special Test Features

Pitch diameter: oversize .2910"max, .2900"min, pd lead thread: .2854"max, .2834"min, minor diameter: .2634"max, .2586"min

Surface Treatment Specification

96906-mil-dtl-13924 military standard single treatment response

NSN

5307-01-552-9056

Part Number

120-279M

Description

Stud,aircraft,mater

CAGE

97499

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:

Equipment for Aircraft

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