5305-01-166-6643

Find complete technical information, availability, and procurement data for: 5305-01-166-6643
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-166-6643

Item Name Code

06657

Assigment Date

11/16/1983 (42 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal 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. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

right-hand thread direction, 0.422 inches minimum and 0.469 inches maximum fastener length, 0.296 inches minimum and 0.437 inches maximum thread length, hexagon head style, 3a thread class

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Thread Class: 3a
Thread Direction: right-hand
Thread Length: 0.296 inches minimum and 0.437 inches maximum
Fastener Length: 0.422 inches minimum and 0.469 inches maximum
Head Style: hexagon
Head Height: 0.096 inches minimum and 0.110 inches maximum
Width Between Flats: 0.241 inches minimum and 0.250 inches maximum
Hole Diameter: 0.035 inches minimum and 0.045 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.164 inches
Hole Quantity: 2
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 125000 pounds per square inch
Hardness Rating: 26.0 rockwell c minimum and 32.0 rockwell c maximum
Screw Material: steel comp 4037 or steel comp 8630
Screw Material Document And Classification: ams6300 assn std 1st material response or mil-s-6050 mil spec 2nd material response
Head Hole Configuration Style: round
Thread Series Designator: unc

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
3185614-2-7	Machine Screw

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5305-01-166-6643?

The FSCG of the NSN 5305-01-166-6643 is 5305

Does the NSN 5305-01-166-6643 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-166-6643 require demilitarization?

Items subject to the export administration regulations (ear) in parts 730-774 of title 15, code of federal regulations (cfr) (ccli or ear99) and determined by dod to present a low risk when released out of dod control. No demil, mut, or end use certificate is required. May require an export licensefrom doc.

Does NSN 5305-01-166-6643 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-166-6643 contain hazardous materials?

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

When the NSN 5305-01-166-6643 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Wed, Nov 16, 1983