Model: 639255-085

Tapping Screw

Properties:

Fastener Length

Between 0.219 inches and 0.281 inches

Head Style

Pan

Head Diameter

Between 0.205 inches and 0.219 inches

Head Height

Between 0.070 inches and 0.080 inches

Internal Drive Style

Cross recess type 1

End Application

W/s: submarine auxillary and miscellaneous systems; missile, minuteman lgm-30; chaparral/vulcan ads/ssamd; aircraft, orion p-3; shop equipment, contact maintenance, truck mounted; airborne mobile dir air spt ctl (2id), (02m jul83) (an/uyq-3a); trident hull structure; support equipment, b-1 aircraft; aircraft, stratolifter c-135; mixier rotary tiller

Nonmachine Thread Style

Gimlet point (type a, ab or ba)

Nonmachine Thread Diameter

0.112 inches

Material

Steel comp 1016 or steel comp 1018 or steel comp 1019 or steel comp 1022 or steel comp 1030 or steel comp 1524

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416, type 2, class 3 federal specification all treatment responses

NSN

5305-00-879-3825

Part Number

639255-085

Description

Screw,tapping

CAGE

12436

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 639255-085 NSN 5305-00-879-3825

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:

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

Freight Class: Self-tapping screws of iron or steel