Model: 55-988-0

Round Plain Nut

Properties:

Thread Pitch Diameters
+1.1189/+1.1369 inches
Thread Direction
Right-hand
Drive Point Depth
0.094 inches
Nut Style
Round
Nut Diameter
Between 1.730 inches and 1.760 inches
Nut Thickness
Between 0.396 inches and 0.416 inches
Drive Point Width
Between 0.178 inches and 0.198 inches
Drive Point Quantity
4
End Application
W/s: missile, air-to-air, sparrow (aim-7); deep submergence systems programs (dssp); fire pumps; l.P. Comptessors; support equipment, b-1 aircraft; systems, jp-5 aviation fuels; boilers, 1200 psi; elevators, aircraft; main feed pumps
Thread Series
Uns
Thready Qty Per Inch (tpi)
18
Hardness Rating
Between 66.0 rockwell b and 92.0 rockwell b
Thread Size
1.173 inches
Material
Steel comp 1015 or steel comp 1016 or steel comp 1017 or steel comp 1018 or steel comp 1019 or steel comp 1020 or steel comp 1021 or steel comp 1023 or steel comp 1524 or steel comp 1025 or steel comp 1026 or steel comp 1527 or steel comp 1030 or steel comp 1033 or steel comp 1034 or steel comp 1035
Material Specification
66 federal standard all material responses
NSN
5310-00-185-6463
Part Number
55-988-0
Description
Nut,plain,round
CAGE
75377

A nut, circular in shape, which may have wrenching facilities such as flats, holes, protrusions, slots or splines in or on the periphery or in the face opposite the bearing surface. For items having a thickness (or height) exceeding two times the outside diameter, use post, electrical-mechanical equipment. See also nut (1), plain, knurled. (when height or thickness and/or outside diameter is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part 55-988-0 NSN 5310-00-185-6463

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
15887
FIIG:
A021A0
Concept No.:
1
App. Key:
AY
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:
U
ESD:
ESD:
MMAC:
SX
CRITL:
X

Packaging & Shipping

Est. Pack Size
Est. Pack Weight
Est. Item Weight
Est. Item Dim.
Pack Size:
--
Paclk Weight:
1.4000lbs
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:

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:
Trailers/Vehicles

End Items End applications NSN 5310-00-185-6463 is a component of

  • Sparrow (aim-7); Deep Submergence Systems Programs (dssp); Fire Pumps; L.p Air-to-air W/s: Missile
  • Main Feed Pumps
  • Jp-5 Aviation Fuels Systems
  • B-1 Aircraft Support Equipment
  • Aircraft Elevators
  • 1200 Psi Boilers
  • Fire Pumps
  • Sparrow (aim-7) Air-to-air Missile
  • Deep Submergence Systems Programs (dssp)
  • Adcap 48 Torpedo
  • 011431212
  • Tank Type Water Distributor
  • 011431213
  • Tank Type Water Distributor
  • 004420312
  • Accele Test Station
  • 007951797
  • Full Tracked Combat Engineer Vehicle
  • 005315951
  • Scanner Drive
  • 010568641
  • Speed Decreaser Gear Assembly
  • 010656711
  • Speed Decreaser Gear Assembly

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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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