Model: MS21083D5

Hexagon Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with nonmetallic insert

Lubrication

Soluble lubricant

Nut Style

Hexagon

Nut Height

0.266 inches

Width Across Flats

Between 0.492 inches and 0.502 inches

Tempurature Rating

250.0 degrees fahrenheit

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.312 inches

Countersink Angle

88.0 degrees nut

Bearing Surface Type

Chamfered or washer faced

Bearing Surface Finish

125.0 microinches

Material

Aluminum alloy 2014 nut or aluminum alloy 2017 nut or aluminum alloy 2024 nut or aluminum alloy 7075 nut

Material Specification

Qq-a-200/2, t6 federal specification 1st material response nut or qq-a-225/4, t4 federal specification 2nd material response nut or qq-a-225/6, t6 federal specification 3rd material response nut or qq-a-200/11, t6 federal specification 4th material response nut

Surface Treatment

Anodize except insert or chromate except insert

Surface Treatment Specification

Mil-a-8625 military specification 1st treatment response except insert or mil-c-5541 military specification 2nd treatment response except insert

NSN

5310-00-016-7181

Part Number

MS21083D5

Description

Nut,self-locking,hexagon

CAGE

80205

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 MS21083D5 NSN 5310-00-016-7181

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:

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:

013540

UFC:

05680

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Trailers/Vehicles

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Schedule B and Export

Schedule B: 7616995095
SITC: 69979
End Use: Finished metal shapes
NAICS: 332999
USDA: 1

Freight Class: Articles of aluminum nesoi