Model: 79NU404

Hexagon Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with nonmetallic insert

Nut Style

Hexagon

Nut Height

Between 3.078 inches and 3.204 inches

Width Across Flats

Between 3.875 inches and 4.015 inches

Tempurature Rating

250.0 degrees fahrenheit

Thread Series

Unc

Thready Qty Per Inch (tpi)

Thread Size

2.500 inches

Countersink Angle

88.0 degrees nut

Bearing Surface Type

Chamfered

Bearing Surface Finish

125.0 microinches

Material

Plastic polyhexamethylene amide locking insert

Material

Steel comp 302 nut or steel comp 303 nut or steel comp 304 nut or steel comp 305 nut or steel comp 316 nut or steel comp 317 nut or steel comp 347 nut

Material Specification

Ff-n-836 federal standard all material responses nut

Material Specification

Mil-a-20693, comp a, type 1 military specification single material response locking insert

Surface Treatment

Passivate nut

Surface Treatment Specification

Qq-p-35 federal specification single treatment response nut

NSN

5310-00-181-6986

Part Number

79NU404

Description

Nut,self-locking,hexagon

CAGE

019L2

A nut having a flat bottom and 6 sides. An integral feature is incorporated for locking on the threads of a mating member. Excludes nut (1), self-locking, cap.

Part 79NU404 NSN 5310-00-181-6986

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05277

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:

7.0000lbs

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

Pricing & Availability Check

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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