Model: 66666-1972

Externally Relieved Body Screw

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.230 inches and 0.270 inches

Fastener Length

Between 0.720 inches and 0.750 inches

Head Style

Flat chamfer

Head Diameter

Between 0.365 inches and 0.375 inches

Head Height

Between 0.244 inches and 0.250 inches

First Diameter From Head

Between 0.184 inches and 0.188 inches

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

Between 0.450 inches and 0.520 inches

Internal Drive Style

Hexagon

Thread Diameter

0.250 inches

Width Across Flats

Between 0.1875 inches and 0.1900 inches

Thready Qty Per Inch (tpi)

Min. Tensile Strength (psi)

130000 pounds per square inch

Hardness Rating

24.0 rockwell c and 36.0 rockwell c

Externally Relieved Body Diameter Quantity

Material

Iron alloy 660

Material Specification

Ams 5736 assn standard single material response

Surface Treatment

Passivate

Surface Treatment Specification

Qq-p-35 federal specification single treatment response

Thread Series Designator

Unf

NSN

5305-01-333-9865

Part Number

66666-1972

Description

Screw,externally Relieved Body

CAGE

1YGB8

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 66666-1972 NSN 5305-01-333-9865

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:

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