Model: 18979

Single Ball Sea Self-locking Nut

Properties:

Thread Class
2b
Thread Direction
Left-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Single ball seat, hexagon
Ball Seat Radius
0.875 inches
Nut Height
0.875 inches
Width Across Flats
Between 1.480 inches and 1.505 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
16
Thread Size
0.750 inches
Material
Steel comp 1120
Material Specification
Qq-s-633-canc federal specification single material response
Surface Treatment
Cadmium or zinc
NSN
5310-00-053-7804
Part Number
18979
Description
Nut,self-locking,single Ball Sea
CAGE
11743

A nut having one convex, spherical bearing surface and 6 flat sides. Items may have a removable collar. An integral feature is incorporated for locking on the threads of a mating member. See also nut (1), self-locking, cone seat, hexagon.

Part 18979 NSN 5310-00-053-7804

INC
FIIG
Concept No.
App. Key
Cond. Code
Status
INC:
29732
FIIG:
A021A0
Concept No.:
1
App. Key:
CB
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:
M
SPI No.:
SPI Rev.:
SPC Mkg:
99
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:
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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