Model: 431138

Square Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Nut Style

Square

Nut Height

Between 0.270 inches and 0.290 inches

End Application

W/s: engine, aircraft, tf33-100 (e3a/b/c); engine, aircraft, tf-33-p-7 (c-121a/b); engine, aircraft, tf33-p-3/5/9 (c/ec-135, b-52h); engine, aircraft, tf33-pw-102 (c-135e, ec-135h/k/p)

Width Across Flats

Between 0.730 inches and 0.740 inches

Thread Series

Unf

Thready Qty Per Inch (tpi)

Hardness Rating

Between 32.0 rockwell c and 38.0 rockwell c

Thread Size

0.312 inches

Countersink Angle

85.0 degrees nut and 95.0 degrees nut

Bearing Surface Type

Chamfered

Material

Steel comp 8740

Material Specification

Ams 6322 assn standard single material response

Surface Treatment

Cadmium

Surface Treatment Specification

Ams 2400 assn standard single treatment response

NSN

5310-00-862-7902

Part Number

431138

Description

Nut,plain,square

CAGE

97139

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 431138 NSN 5310-00-862-7902

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:

0.1000lbs

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

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