Model: 420993

Assembled Washer Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.526 inches and 0.626 inches

Fastener Length

0.750 inches

Head Style

Pan no. 2

Head Diameter

Between 0.357 inches and 0.373 inches

Head Height

Between 0.099 inches and 0.110 inches

Washer Quantity

Internal Drive Style

Slot

Thread Diameter

0.250 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

120000 pounds per square inch

Hardness Rating

23.0 rockwell c and 40.0 rockwell c

Primary Washer Style

Split helical ring

Material

Steel

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

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

Thread Series Designator

Unc

NSN

5305-01-203-5147

Part Number

420993

Description

Screw,assembled Washer

CAGE

21450

A screw, (as modified) to which has been assembled one or more nonremovable washer(s).

Part 420993 NSN 5305-01-203-5147

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06660

FIIG:

A003B0

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:

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:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment