Model: 31802

Tapping Screw

Properties:

Fastener Length

0.50 inches

Head Style

Hexagon extended washer

Head Height

Between 0.096 inches and 0.110 inches

Width Between Flats

Between 0.244 inches and 0.250 inches

Extended Washer Diameter

Between 0.322 inches and 0.348 inches

Extended Washer Thickness

Between 0.019 inches and 0.031 inches

Internal Drive Style

W/o internal drive

Nonmachine Thread Style

Self drilling

Nonmachine Thread Diameter

0.164 inches

Part Name Assigned By Controlling Agency

No.8-18 x 1/2 unslotted hex washer head self-drilling screw zinc no.2 point

Material

Steel

Surface Treatment

Zinc

NSN

5305-01-610-9831

Part Number

31802

Description

Screw,tapping

CAGE

0Y3H3

A hardened externally threaded fastener whose thread extends to the bearing surface of the head. The thread may be fluted or otherwise designed to cut or form its own mating thread. Excludes screw, assembled washer.

Part 31802 NSN 5305-01-610-9831

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

41756

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:

Freight Classification

NMFC

UFC

LTL

LCL

WCC

TCC

SHC

ACC

NMFC:

096640

UFC:

50600

LTL:

70.0

LCL:

WCC:

713

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318140000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Self-tapping screws of iron or steel