Model: S1665-61663-3

Externally Relieved Body Screw

Special Features:

Cadmium plate 0.00015 in. Thk

Properties:

Thread Class

Thread Direction

Right-hand

Thread Length

Between 0.180 inches and 0.240 inches

Fastener Length

Between 0.990 inches and 1.010 inches

Head Style

Binding

Head Diameter

Between 0.359 inches and 0.391 inches

Head Height

Between 0.078 inches and 0.110 inches

First Diameter From Head

Between 0.184 inches and 0.186 inches

Second Diameter From Head

Between 0.090 inches and 0.095 inches

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

Between 0.740 inches and 0.760 inches

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

Between 0.770 inches and 0.810 inches

Internal Drive Style

Slot

Thread Diameter

0.138 inches

Thready Qty Per Inch (tpi)

Externally Relieved Body Diameter Quantity

Material

Steel comp 4130 or steel comp 8630 or steel comp 8735 or steel comp 8740

Material Specification

Mil-s-6758 military specification 1st material response or mil-s-6050 military specification 2nd material response or mil-s-6098 military specification 3rd material response or mil-s-6049 military specification 4th material response

Surface Treatment

Cadmium

Surface Treatment Specification

Qq-p-416 federal specification single treatment response

Thread Series Designator

Unc

NSN

5305-00-550-2598

Part Number

S1665-61663-3

Description

Screw,externally Relieved Body

CAGE

78286

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 S1665-61663-3 NSN 5305-00-550-2598

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:

50.0

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