Model: 218-22418-1

Externally Relieved Body Screw

Special Features:

Pellet type insert locking element per nas1283 type n

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

0.387 inches

Fastener Length

0.500 inches

Head Style

Bevel-conical

Head Diameter

0.310 inches

Head Height

0.250 inches

First Diameter From Head

0.200 inches

Second Diameter From Head

Between 0.247 inches and 0.249 inches

Third Diameter From Head

Between 0.141 inches and 0.146 inches

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

0.050 inches

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

Between 0.100 inches and 0.105 inches

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

Between 0.180 inches and 0.185 inches

Internal Drive Style

Slot

Thread Diameter

0.190 inches

Thready Qty Per Inch (tpi)

Externally Relieved Body Diameter Quantity

Material

Steel comp 4340

Material Specification

Cva1-585, cond c1 fscm 80378 mfr ref single material response

Thread Series Designator

Unf

NSN

5305-00-471-3642

Part Number

218-22418-1

Description

Screw,externally Relieved Body

CAGE

80378

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 218-22418-1 NSN 5305-00-471-3642

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:

Packaging & Shipping

Est. Pack Size

Est. Pack Weight

Est. Item Weight

Est. Item Dim.

Pack Size:

Paclk Weight:

0.1000lbs

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: 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