Model: 139C6511-2

Square Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Nut Style

Square

Nut Height

Between 0.498 inches and 0.499 inches

Width Across Flats

1.250 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Hardness Rating

Between 30.0 rockwell c and 35.0 rockwell c

Thread Size

0.750 inches

Bearing Surface Type

Chamfered or washer faced

Bearing Surface Finish

125.0 microinches

Material

Steel comp 4140 or steel

Material Specification

Qq-s-624 federal specification single material response or qq-s-624, com+41l40 federal specification single material response

Surface Treatment

Phosphate

Surface Treatment Specification

Mil-p-16232, ty m, cl1 military specification single treatment response or mil-p-16232, ty z, cl1 military specification single treatment response

NSN

5310-00-312-1050

Part Number

139C6511-2

Description

Nut,plain,square

CAGE

05606

A nut, flat on top and bottom, having 4 flat sides. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

Part 139C6511-2 NSN 5310-00-312-1050

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01858

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:

0.2000lbs

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