Model: 990291-31,41,51

Plate Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Mounting Hole Diameter

Between 0.066 inches and 0.071 inches

Nut Style

Plate

Nut Length

0.331 inches

Nut Height

0.143 inches

Plate Thickness

0.040 inches

Nut Mounting Provision

Straight holes

Mounting Hole Arrangement Style

2 holes

Distance From Aperture Center To Mounting Hole Center

Between 0.143 inches and 0.153 inches

Tempurature Rating

900.0 degrees fahrenheit

Thread Series

Unjc

Thready Qty Per Inch (tpi)

Thread Size

0.112 inches

Part Name Assigned By Controlling Agency

Navy special project

Material

Iron alloy 660

Precious Material And Location

silver

Precious Material

Silver

Surface Treatment

Silver

Surface Treatment Specification

Ams 2410 assn standard single treatment response or ams 2411 assn standard single treatment response

Surface Treatment Specification

Ams 2410 assn standard single treatment response or ams 2411 assn standard single treatment response

NSN

5310-00-232-0728

Part Number

990291-31,41,51

Description

Nut,self-locking,plate

CAGE

15653

A nut with a flanged base of varied shapes which may be plain or mounted by rivets, bolts, welding or integral prongs. An integral feature is incorporated for locking on the threads of a mating member.

Part 990291-31,41,51 NSN 5310-00-232-0728

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

05280

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:

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