Model: 187993

Assembled Washer Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.608 inches and 0.719 inches

Fastener Length

Between 0.719 inches and 0.750 inches

Head Style

Hexagon

Head Height

Between 0.208 inches and 0.230 inches

Width Between Flats

Between 0.491 inches and 0.500 inches

Washer Quantity

Internal Drive Style

Slot

Thread Diameter

0.312 inches

Thready Qty Per Inch (tpi)

Primary Washer Outside Diameter

Between 0.567 inches and 0.590 inches

Primary Washer Style

Flat external teeth

Primary Washer Material Thickness

Between 0.028 inches and 0.034 inches

Material

Steel comp 1010 or steel comp 1020 or steel comp 1050

Material Specification

Sae assn standard all material responses

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

5305-00-018-7993

Part Number

187993

Description

Screw,assembled Washer

CAGE

89346

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

Part 187993 NSN 5305-00-018-7993

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:

0.2000lbs

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