Model: 12377969-1

Tapping Screw

Properties:

Fastener Length

0.470 inches

Head Style

Hexagon extended washer

Head Height

0.264 inches

Width Between Flats

0.500 inches

Extended Washer Diameter

Between 0.624 inches and 0.676 inches

Extended Washer Thickness

Between 0.035 inches and 0.055 inches

Internal Drive Style

W/o internal drive

Features Provided

Casehardened

Hardness Rating

45.0 rockwell c and 50.0 rockwell c

Nonmachine Thread Style

Double flute (type f)

Nonmachine Thread Diameter

0.312 inches

Material

Steel comp 1020 or steel comp 1021 or steel comp 1022 or steel comp 1023 or steel comp 1524

Surface Treatment

Zinc and chromate

Surface Treatment Specification

Astm b633 type 2 assn standard single treatment response

Nondefinitive Specification/std Data

F type

NSN

5305-01-443-8436

Part Number

12377969-1

Description

Screw,tapping

CAGE

19207

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 12377969-1 NSN 5305-01-443-8436

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