Model: 2540457

Round Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Drive Point Depth

Between 0.177 inches and 0.202 inches

Nut Style

Round

Nut Diameter

1.250 inches

Nut Thickness

Between 0.297 inches and 0.327 inches

Drive Point Width

0.079 mils and 0.109 centimeters

Drive Point Quantity

Thread Series

Unf

Thready Qty Per Inch (tpi)

Thread Size

0.375 inches

Countersink Angle

99.5 degrees nut and 100.5 degrees nut

Material

Steel comp 4140

Material Specification

Mil-s-5626 military specification single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416 federal specification single treatment response

NSN

5310-00-558-7137

Part Number

2540457

Description

Nut,plain,round

CAGE

88277

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 2540457 NSN 5310-00-558-7137

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:

0.1000lbs

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:

573

TCC:

SHC:

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