Model: 55-22018-24A

Round Plain Nut

Properties:

Thread Class

Thread Direction

Left-hand

Counterbore Diameter

1.265 inches first end and 1.267 inches first end

Counterbore Diameter

1.380 inches second end and 1.382 inches second end

Nut Style

Round

Nut Diameter

Between 1.748 inches and 1.750 inches

Nut Thickness

1.562 inches

Nut Counterbore Depth

0.250 inches second end

Drilled Hole Diameter

0.281 inches

Hole Type And Quantity

2 drilled and 2 tapped

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

1.375 inches

Hole Thready Qty Per Inch (tpi)

Hole Configuration Style

Configuration f

Hole Thread Diameter

0.250 inches

Material

Nickel alloy 400

Material Specification

Qq-n-281, cl a federal specification single material response

NSN

5310-01-121-8186

Part Number

55-22018-24A

Description

Nut,plain,round

CAGE

52081

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 55-22018-24A NSN 5310-01-121-8186

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15887

FIIG:

A021A0

Concept No.:

App. Key:

Cond. Code:

Status:

Material Classification

Hazardous material, precious metals, criticality, enviroment, and electrostatic discharge indicators

HMIC

PMIC

ESD/EMI

ENAC

MMAC

CRITL

HMIC:

PMIC:

ESD:

MMAC:

CRITL:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.6000lbs

Item Weight:

Item Dim:

OPI

SPI No.

SPI Rev.

SPC Mkg.

LVL A

LVL B

OPI:

SPI No.:

SPI Rev.:

SPC Mkg:

LVL_A:

LVL_B:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

139820

UFC:

70220

LTL:

85.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7508900000
SITC: 69975
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Other articles of nickel, nesoi (excluding cloth, grill & netting of nickel wire)