Model: MD3789

Externally Relieved Body Bolt

Special Features:

Two drilled holes in shank, 0.437 in. C to c

Properties:

Thread Direction

Right-hand

Thread Length

1.375 inches

Fastener Length

4.688 inches

Head Style

Round w/wrench flats chamfered

Head Diameter

1.188 inches

Head Height

0.500 inches

Width Between Flats

Between 0.988 inches and 0.990 inches

Shank Unthreaded Hole Diameter

0.156 inches first hole

First Diameter From Head

Between 0.751 inches and 0.752 inches

Second Diameter From Head

Between 0.663 inches and 0.666 inches

Distance From Largest Bearing Surface Of Head To End Of First Diameter

0.375 inches

Distance From Largest Bearing Surface Of Head To End Of Second Diameter

3.313 inches

Thread Diameter

0.750 inches

Nonstandard Thread Pitch Diameter

+0.7062/+0.7094 inches

Thready Qty Per Inch (tpi)

Hardness Rating

27.0 rockwell c and 31.0 rockwell c

Distance From Head Largest Bearing Surface To Shank Hole Center

0.219 inches first hole

Externally Relieved Body Diameter Quantity

Material

Steel comp 4140

Thread Series Designator

Unf

NSN

5306-00-424-4421

Part Number

MD3789

Description

Bolt,externally Relieved Body

CAGE

76558

An externally threaded fastener whose threaded portion is of one nominal diameter, and whose unthreaded portion has been machined or ground in one or more places or over its entire length to a maximum diameter less than the minimum pitch diameter of the thread (excludes undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

Part MD3789 NSN 5306-00-424-4421

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

06675

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:

573

TCC:

SHC:

ACC:

Construction Materials

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Schedule B and Export

Schedule B: 7318152000
SITC: 69421
End Use: Iron and steel products, other
NAICS: 332722
USDA: 1

Freight Class: Bolts and bolts and their nuts or washers exported in the same shipment