Model: PK55Z8-4

Tapping Screw

Properties:

Fastener Length

0.250 inches

Head Style

Pan no. 2

Head Diameter

Between 0.306 inches and 0.322 inches

Head Height

Between 0.085 inches and 0.096 inches

Internal Drive Style

Slot

Features Provided

Casehardened

Nonmachine Thread Style

Dog type (type b or c)

Nonmachine Thread Diameter

0.164 inches

Material

Steel comp 1010 or steel comp 1011 or steel comp 1015 or steel comp 1016 or steel comp 1018 or steel comp 1019 or steel comp 1020

Material Specification

Qq-s-633 federal specification all material responses

Surface Treatment

Cadmium

Nondefinitive Specification/std Data

B type and 9s style

NSN

5305-00-497-4085

Part Number

PK55Z8-4

Description

Screw,tapping

CAGE

45722

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 PK55Z8-4 NSN 5305-00-497-4085

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:

50.0

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