Model: 3M221-6

Extended Washer Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

0.677 inches

Lubrication

Dry film lubricant

Overall Height

0.458 inches

Nut Style

Double hexagon

Washer Thickness

0.064 inches

Width Across Flats

Between 0.430 inches and 0.439 inches

Tempurature Rating

450.0 degrees fahrenheit

Thread Series

Unjf

Thready Qty Per Inch (tpi)

Thread Size

0.375 inches

Material

Steel

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416, type 1, cl 3 federal specification single treatment response

NSN

5310-00-680-5210

Part Number

3M221-6

Description

Nut,self-locking,extended Washer

CAGE

76301

A nut having 12 drive points, 24 sides, and an integral washer which extends beyond the points or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part 3M221-6 NSN 5310-00-680-5210

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29729

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

Submit this form for stock availability and pricing.

How to Order

Ordering from buyaircraftparts.com

If you would like to order this extended washer self-locking nut (NSN 5310-00-680-5210) please submit the pricing and availability form above to receive an up to date quote by email. If you agree to the pricing and terms you can e-sign your order online!

We are pleased to have the opportunity to serve you.

Have a Question

Hours:	08:00-18:00 Eastern Standard Time
Phone:	+1 470-231-0824
Email:	Contact Form »

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