Model: 820-4551186-1

Setscrew

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.490 inches and 0.510 inches

Fastener Length

Between 0.490 inches and 0.510 inches

Head Style

Headless (setscrew)

Point Style

Cup

Internal Drive Style

Hexagon

Thread Diameter

0.375 inches

Width Across Flats

Between 0.188 inches and 0.190 inches

Thready Qty Per Inch (tpi)

Hardness Rating

45.0 rockwell c and 53.0 rockwell c

Criticality Code Justification

Zzzy

Material

Steel

Surface Treatment

Cadmium and chromate

Special Test Features

Special quality control testing

Surface Treatment Specification

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

Test Data Document

81349-mil-p-23199 specification (includes engineering type bulletins, brochures, etc., that reflect specification type data in specification format; excludes commercial catalogs, industry directories, and similar trade publications, reflecting general type data on certain environmental and performance requirements and test conditions that are shown as "typical", "average", "", etc.).

Thread Series Designator

Unc

Reference Number Differentiating Characteristics

As differentiated by material which must conform to ships parts control center special quality control provisions and certified free from mercury contamination

NSN

5305-01-142-0304

Part Number

820-4551186-1

Description

Setscrew

CAGE

97370

An externally threaded device whose threaded portion is of one nominal diameter with or without a head and having a cup, cone, or other type of machined point designed to prevent or restrict relative movement of parts and designed to be driven with either a wrench or inserted driver. A locking feature may be incorporated in the design of the head or threads.

Part 820-4551186-1 NSN 5305-01-142-0304

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06672

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