Model: 990C178-H01

Clinch Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Pilot Diameter

Between 0.286 inches and 0.290 inches

Pilot Length

0.050 mils and 0.062 centimeters

Nut Height

0.277 inches

Width Across Flats

0.344 inches

Thread Series

Unc

Features Provided

Floating nut

Thready Qty Per Inch (tpi)

Thread Size

0.112 inches

Material

Steel comp 303 or steel comp 303se or steel comp 303 plus x or steel comp 303cu or steel comp 303ma or steel comp 303pb

Material Specification

Astm a582 assn standard 1st material response or astm a582 assn standard 2nd material response or qq-s-764 federal specification 3rd material response or qq-s-764 federal specification 4th material response or qq-s-764 federal specification 5th material response or qq-s-764 federal specification 6th material response

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35, type 2 federal specification single treatment response

NSN

5310-01-238-0644

Part Number

990C178-H01

Description

Nut,self-locking,clinch

CAGE

18323

A nut having a sleeve portion on its under side, which can be crimped or clinched to hold the item in place when inserted in a hole. An integral feature is incorporated for locking.

Part 990C178-H01 NSN 5310-01-238-0644

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

15892

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

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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