Model: 000.250-20UNC-3B, LEVEL 1

Hexagon Self-locking Nut

Special Features:

For additional description and information concerning this item, refer to spccinst 4440.376 series, chapter 9

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with nonmetallic insert

Nut Style

Hexagon

Nut Height

Between 0.240 inches and 0.360 inches

Width Across Flats

Between 0.430 inches and 0.439 inches

Tempurature Rating

250.0 degrees fahrenheit

Thread Series

Unc

Thready Qty Per Inch (tpi)

Hardness Rating

Between 26.0 rockwell c and 34.0 rockwell c

Thread Size

0.250 inches

Criticality Code Justification

Zzzy

Bearing Surface Type

Any acceptable

Material

Steel comp 1137 except insert

Material Specification

Fed std-66 federal standard single material response except insert

Surface Treatment

Cadmium except insert

Surface Treatment Specification

Qq-p-416, type 2, class 3 federal specification single treatment response except insert

Reference Number Differentiating Characteristics

Material will be in accordance with ships parts control center activity hx quality control, manufacturing and testing specifications

NSN

5310-01-212-9719

Part Number

000.250-20UNC-3B, LEVEL 1

Description

Nut,self-locking,hexagon

CAGE

03950

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 000.250-20UNC-3B, LEVEL 1 NSN 5310-01-212-9719

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:

3.5 X 3.0 X 0.9

Paclk Weight:

2.6000lbs

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:

093470

UFC:

48940

LTL:

70.0

LCL:

70.0

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