Model: MS51971-1

Hexagon Plain Nut

Properties:

Thread Class

Thread Direction

Right-hand

Nut Style

Hexagon

Nut Height

Between 0.212 inches and 0.226 inches

End Application

Mrap- cougar ambulance/rg-33 auv; mrap buffalo mk2a2

Width Across Flats

Between 0.4280 inches and 0.4375 inches

Thread Series

Unc

Thready Qty Per Inch (tpi)

Thread Size

0.250 inches

Bearing Surface Type

Chamfered or washer faced

Material

Steel comp 303 or steel comp 304 or steel comp 440c

Material Specification

Fed standard 66, aisi 303 or sae 30303 federal standard 1st material response or federal standard 66, aisi 304 or sae 30304 federal standard 2nd material response or aisi 14140c federal standard 3rd material response

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

NSN

5310-00-903-5966

Part Number

MS51971-1

Description

Nut,plain,hexagon

CAGE

96906

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. 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 MS51971-1 NSN 5310-00-903-5966

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01857

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:

0.7000lbs

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