Model: 021-16758-000

Hexagon Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque with nonmetallic insert

Nut Style

Hexagon

Nut Height

Between 0.208 inches and 0.281 inches

Width Across Flats

Between 0.367 inches and 0.376 inches

Tempurature Rating

250.0 degrees fahrenheit

Thread Series

Unc

Thready Qty Per Inch (tpi)

Thread Size

0.190 inches

Countersink Angle

88.0 degrees nut

Bearing Surface Type

Chamfered or washer faced

Material

Plastic polyhexamethylene amide locking insert

Material

Steel comp 1137 nut

Material Specification

66 federal standard single material response nut

Material Specification

Mil-m-20693 comp a type 1 military specification single material response locking insert

Surface Treatment

Cadmium except insert and chromate except insert

Surface Treatment Specification

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

NSN

5310-00-689-3877

Part Number

021-16758-000

Description

Nut,self-locking,hexagon

CAGE

66935

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 021-16758-000 NSN 5310-00-689-3877

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:

000000

UFC:

00000

LTL:

NO RATING

LCL:

WCC:

772

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