Model: 2643-820-12 ITEM 53

Hexagon Self-locking Nut

Properties:

Thread Class
3b
Thread Direction
Right-hand
Locking Feature
Prevailing torque with nonmetallic insert
Nut Style
Hexagon
Nut Height
Between 1.110 inches and 1.140 inches
End Application
34 inch titanium butterfly valve on nuc sub
Width Across Flats
Between 1.427 inches and 1.446 inches
Tempurature Rating
250.0 degrees fahrenheit
Thread Series
Unc
Thready Qty Per Inch (tpi)
9
Thread Size
0.875 inches
Countersink Angle
88.0 degrees base
Bearing Surface Type
Chamfered
Part Name Assigned By Controlling Agency
Nut, gland bushing, self-locking
Material
Nickel alloy
Material
Nickel alloy and copper alloy except insert
Material
Plastic locking insert
Material Specification
Mil-n-25027 military specification single material response
Specification Data
81349--25027/1-14c government specification
NSN
5310-01-385-5986
Part Number
2643-820-12 ITEM 53
Description
Nut,self-locking,hexagon
CAGE
96169

Part 2643-820-12 ITEM 53 NSN 5310-01-385-5986

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:
A
ESD:
ESD:
MMAC:
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
0.4000lbs
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:
Q

Freight Classification

NMFC
UFC
LTL
LCL
WCC
TCC
SHC
ACC
NMFC:
093486
UFC:
48950
LTL:
RATING VARIABLE
LCL:
--
WCC:
576
TCC:
Z
SHC:
9
ACC:
Construction Materials

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