Model: 838820B

Externally Relieved Body Bolt

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

1.000 inches

Fastener Length

Between 4.531 inches and 4.594 inches

Head Style

Hexagon

Head Height

Between 0.365 inches and 0.386 inches

Width Between Flats

Between 0.736 inches and 0.750 inches

First Diameter From Head

Between 0.495 inches and 0.510 inches

Second Diameter From Head

0.443 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

3.156 inches

Thread Diameter

0.500 inches

Thready Qty Per Inch (tpi)

Hardness Rating

32.0 rockwell c and 38.0 rockwell c

Externally Relieved Body Diameter Quantity

Material

Steel comp 5140

Thread Series Designator

Unc

NSN

5306-00-741-8556

Part Number

838820B

Description

Bolt,externally Relieved Body

CAGE

7X677

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 838820B NSN 5306-00-741-8556

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