Model: 228A1-0091

Assembled Washer Screw

Special Features:

Item is made to army drawing 21450 bcyx1

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.362 inches and 0.482 inches

Fastener Length

0.500 inches

Head Style

Round

Head Diameter

Between 0.334 inches and 0.359 inches

Head Height

Between 0.123 inches and 0.137 inches

Washer Quantity

Internal Drive Style

Cross recess type 1

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Hardness Rating

40.0 rockwell c primary washer and 50.0 rockwell c primary washer

Primary Washer Outside Diameter

Between 0.365 inches and 0.381 inches

Primary Washer Style

Flat external teeth

Primary Washer Material Thickness

Between 0.018 inches and 0.024 inches

Material

Steel

Surface Treatment

Cadmium or zinc

Surface Treatment Specification

Qq-p-416, type 1, cl 3 federal specification 1st treatment response or qq-z-325, type 1, cl 3 federal specification 2nd treatment response

Thread Series Designator

Unc

NSN

5305-00-022-8358

Part Number

228A1-0091

Description

Screw,assembled Washer

CAGE

02032

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

Part 228A1-0091 NSN 5305-00-022-8358

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:

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:

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