Model: MS51871-1

Tapping Screw

Properties:

Fastener Length

Between 0.470 inches and 0.500 inches

Head Style

Hexagon extended washer

Head Height

Between 0.202 inches and 0.240 inches

Width Between Flats

Between 0.367 inches and 0.375 inches

Extended Washer Diameter

Between 0.480 inches and 0.520 inches

Extended Washer Thickness

Between 0.030 inches and 0.050 inches

Internal Drive Style

W/o internal drive

Features Provided

Casehardened

Min. Tensile Strength (psi)

150000 pounds per square inch

Hardness Rating

32.0 rockwell c and 38.0 rockwell c

Nonmachine Thread Style

Dog type (type b or c)

Nonmachine Thread Diameter

0.250 inches

Material

Steel comp 4037

Material Specification

66 assn standard single material response

Surface Treatment

Cadmium and chromate

Surface Treatment Specification

Qq-p-416 type 2 class 2 federal specification single treatment response or mil-c-81562 type 2 class 2 military specification single treatment response

Nondefinitive Specification/std Data

B type or c type

NSN

5305-01-084-6067

Part Number

MS51871-1

Description

Screw,tapping

CAGE

96906

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 MS51871-1 NSN 5305-01-084-6067

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:

1.3000lbs

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