Model: 120-279N

Mater Aircraft Stud

Special Features:

Material: alloy steel - 4340 per ams6414 or 8740 per ams6322 or ams 6325 or ams 6327

Properties:

Overall Length
1.280 inches
Overall Height
Between 0.3160 inches and 0.3170 inches
Overall Diameter
Between 0.2930 inches and 0.2940 inches
Part Name Assigned By Controlling Agency
Stud, straight, vented, .3125-18 x .3125.24, 180 ksi, special
Material
Steel
Surface Treatment
Oxide
Special Test Features
Left side: 0.3125-18unjs per as8879 chamfer end, 0.739" min, right side: 0.3125-24unjf-3a 0.420" min, middle diameter 0.279" to 0.289"
Supplementary Features
Heat treatment: 180-200 ksi ultimate tensile strength per ams2759, finish: chemical black oxide per mil-dtl-13924
General Description
Pitch diameter: 0.2930" to 0.2940", pd lead thread: 0.2864" to 0.2884", minor diameter: 0.2616" to 0.2664"
Thread Size And Series/type Designator
0.3125-24 unjf
NSN
5307-01-552-9061
Part Number
120-279N
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:
N
PMIC:
A
ESD:
ESD:
MMAC:
NV
CRITL:

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
573
TCC:
Z
SHC:
9
ACC:
Equipment for Aircraft

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