Model: 337972

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Hexagon
Nut Height
Between 0.220 inches and 0.250 inches
End Application
Engine, aircraft f-117, pw-100 (c-17a); aircraft, stratolifter c-135; aircraft, phantom f-4; aircraft, f-111; helicopter, green giant h-3; engine, aircraft tf33-p-3/5/9 (c/ec-135, b-52h); aircraft, airlifter c-17a; engine, aircraft, tf-33-p-7 (c-141a/b); engine, aircraft tf33-pw-102 (c-135e, ec-135h/k/p)
Width Across Flats
Between 0.367 inches and 0.376 inches
Thread Series
Unjf
Thready Qty Per Inch (tpi)
32
Thread Size
0.190 inches
Bearing Surface Type
Chamfered
Material
Iron alloy 660
Material Specification
Ams 5735 assn standard single material response
Precious Material
Silver
Surface Treatment
Silver
NSN
5310-00-931-8552
Part Number
337972
Description
Nut,self-locking,hexagon
CAGE
019L2

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part 337972 NSN 5310-00-931-8552

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
05277
FIIG:
A021A0
Concept No.:
1
App. Key:
BK
Cond. Code:
1
Status:
A

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators
HMIC
PMIC
ESD/EMI
ENAC
MMAC
CRITL
HMIC:
N
PMIC:
S
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.1000lbs
Item Weight:
--
Item Dim:
--
OPI
SPI No.
SPI Rev.
SPC Mkg.
LVL A
LVL B
OPI:
O
SPI No.:
SPI Rev.:
SPC Mkg:
00
LVL_A:
E
LVL_B:

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:
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

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