Model: 394997

Externally Relieved Body Screw

Properties:

Thread Direction

Right-hand

Thread Length

Between 0.428 inches and 0.438 inches

Fastener Length

Between 2.082 inches and 2.092 inches

Head Style

Dee chamfer

Head Diameter

0.393 inches

Head Height

0.205 inches

Distance From Centerline To Flat

0.149 inches

First Diameter From Head

Between 0.234 inches and 0.238 inches

Second Diameter From Head

Between 0.193 inches and 0.201 inches

Third Diameter From Head

Between 0.235 inches and 0.236 inches

Fourth Diameter From Head

Between 0.173 inches and 0.181 inches

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

Between 0.138 inches and 0.178 inches

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

Between 0.504 inches and 0.520 inches

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

Between 0.543 inches and 0.559 inches

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

Between 0.583 inches and 0.599 inches

Internal Drive Style

Cross recess type 1

Thread Diameter

6.0 millimeters

Nonstandard Thread Pitch Diameter

+0.2060/+0.2160 inches

Nonstandard Thread Pitch Diameter

+0.2060 to 0.2160 inches

Thread Pitch In Millimeters

25.4

Externally Relieved Body Diameter Quantity

Part Name Assigned By Controlling Agency

Navy special project

Material

Steel comp e9310

Material Specification

Aisi assn standard single material response

Thread Series Designator

Si-m

NSN

5305-00-778-7828

Part Number

394997

Description

Screw,externally Relieved Body

CAGE

31949

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 undercut for thread relief). It is no. 0 (0.060 in.) (1.5 mm) or larger, and is designed to be held or driven with either a wrench or inserted driver (excluding internal socket and multiple spline types) or both in sizes below no. 10 (0.190 in.) (5 mm) and larger sizes must have a head designed for any type inserted driver (excluding internal socket and multiple spline types) but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. See also bolt, externally relieved body and bolt, internal wrenching.

Part 394997 NSN 5305-00-778-7828

INC

FIIG

Concept No.

App. Key

Cond. Code

Status

INC:

01852

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:

WCC:

713

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