Model: 2B989

Single Ball Sea Self-locking Nut

Special Features:

0.156 inch wide by 0.250 inch deep slot across hex face

Properties:

Thread Class
2b
Thread Direction
Right-hand
Locking Feature
Prevailing torque all metal design
Nut Style
Single ball seat, hexagon
Ball Seat Radius
0.750 inches
Nut Height
0.938 inches
Width Across Flats
1.625 inches
Thread Series
Unf
Thready Qty Per Inch (tpi)
18
Thread Size
0.625 inches
Material
Steel comp 1018
Material Specification
66 federal standard single material response
NSN
5310-00-423-8949
Part Number
2B989
Description
Nut,self-locking,single Ball Sea
CAGE
11083

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 2B989 NSN 5310-00-423-8949

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:
U
ESD:
ESD:
MMAC:
CRITL:
X

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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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