Model: ANSI B18.6.4

Tapping Screw

Properties:

Fastener Length

Between 0.719 inches and 0.781 inches

Head Style

Pan no. 2

Head Diameter

Between 0.281 inches and 0.296 inches

Head Height

Between 0.079 inches and 0.089 inches

Internal Drive Style

Slot

Features Provided

Casehardened

Nonmachine Thread Style

Gimlet point (type a, ab or ba)

Nonmachine Thread Diameter

0.151 inches

Material

Steel

Surface Treatment

Zinc

Surface Treatment Specification

Astm-b633 federal specification 1st treatment response

NSN

5305-00-637-4521

Part Number

ANSI B18.6.4

Description

Screw,tapping

CAGE

80204

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 ANSI B18.6.4 NSN 5305-00-637-4521

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:

093486

UFC:

48950

LTL:

RATING VARIABLE

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