Model: 257A494-1

Retainer Ring Nut Assembly

Properties:

Width
Between 2.490 inches and 2.510 inches
Bolt Circle Diameter
Between 15.990 inches and 16.010 inches
Thickness
Between 0.058 inches and 0.068 inches
Nut Style
Plate
Nut Length
1.292 inches
Nut Height
0.281 inches
Plate Thickness
0.032 inches
Plate Width
Between 0.350 inches and 0.516 inches
Mounting Style
Ring
Ring Outside Diameter
Between 16.990 inches and 17.010 inches
End Application
Laircm group
Nut Quantity
8
Part Name Assigned By Controlling Agency
Nut assembly, self-locking
NSN
5310-01-524-7998
Part Number
257A494-1
Description
Nut Assembly,retainer Ring
CAGE
03640

An item consisting of a flat metal ring designed to be fastened in place, upon which replaceable nuts are assembled in predetermined spacing.

Part 257A494-1 NSN 5310-01-524-7998

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
16007
FIIG:
A021A0
Concept No.:
App. Key:
CN
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:
--
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: 7616108000
  • SITC: 69440
  • End Use: Finished metal shapes
  • NAICS: 332722
  • USDA: 1

Freight Class: Cotters, cotter-pins, washers and similar articles, of aluminum

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