Model: 520844

Round Plain Nut

Special Features:

54 holes, 0.084 in. Min 0.094 in. Max dia, from base to bottom of inside groove beyond threads; inside diameter 4.960 in. Min, 4.970 in. Max, unthreaded portion; external groove, 0.050 in. Min, 0.070 in. Max w; 5.390 in. Min, 5.410 in. Max od, drive side, at end of chamfer; 10 drive slots, 0.490 in. Min, 0.510 in. Max w; radial holes ctr 0.275 in. Fm base; longitudinal holes in groups of three

Properties:

Thread Class

Thread Direction

Right-hand

Counterbore Diameter

5.277 inches and 5.283 inches base

Drive Point Depth

Between 0.170 inches and 0.190 inches

Nut Style

Round

Nut Diameter

Between 5.572 inches and 5.576 inches

Nut Thickness

Between 1.640 inches and 1.660 inches

Drive Point Width

Between 0.490 inches and 0.510 inches

Drive Point Quantity

Nut Counterbore Depth

0.110 inches and 0.130 inches base

Hole Type And Quantity

18 tapped

Thread Series

Unjs

Thready Qty Per Inch (tpi)

Hardness Rating

Between 32.0 rockwell c and 38.0 rockwell c

Thread Size

4.9375 inches

Hole Thready Qty Per Inch (tpi)

Hole Configuration Style

Configuration f

Countersink Angle

2.0 degrees and 4.0 degrees base

Hole Thread Diameter

0.216 inches

Material

Steel comp 8740

Material Specification

Ams 6322 assn standard single material response or am 6323 assn standard single material response

Surface Treatment

Silver

Surface Treatment Specification

Ams 2210 assn standard single treatment response or ams 2212 assn standard single treatment response

NSN

5310-00-912-0658

Part Number

520844

Description

Nut,plain,round

CAGE

77445

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 520844 NSN 5310-00-912-0658

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:

1.5000lbs

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:

093486

UFC:

48950

LTL:

RATING VARIABLE

LCL:

WCC:

671

TCC:

SHC:

ACC:

Equipment for Aircraft

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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