Model: 81-A-1630

Extended Washer Self-locking Nut

Properties:

Thread Class

Thread Direction

Right-hand

Locking Feature

Prevailing torque all metal design

Washer Outside Diameter

Between 1.280 inches and 1.330 inches

Overall Height

Between 0.581 inches and 0.678 inches

Nut Style

Hexagon

Width Across Flats

Between 0.9380 inches and 0.9395 inches

Thread Series

Thready Qty Per Inch (tpi)

Thread Size

0.625 inches

Part Name Assigned By Controlling Agency

Nut, self-locking, extended washer, hex

Material

Steel

Surface Treatment

Cadmium

NSN

5310-01-276-1655

Part Number

81-A-1630

Description

Nut,self-locking,extended Washer

CAGE

02592

A nut having 6 flat sides and an integral washer which extends beyond the flats or periphery. An integral feature is incorporated for locking on the threads of a mating member.

Part 81-A-1630 NSN 5310-01-276-1655

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

29730

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:

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