20097-91F3

View detailed technical data, stock status, and sourcing information for: 20097-91F3
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-218-8277

Item Name Code

16282

Assigment Date

10/19/1985 (40 years ago)

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:undercuts for thread relief). It is no. 10 (0.190 in.) (5 mm) or larger in size and has a head which is not designed to be held or driven with an inserted driver or designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, internal wrenching and thumbscrew. See also screw, externally relieved body.

flat chamfer head style, 0.144 inches minimum and 0.204 inches maximum thread length, 0.172 inches minimum and 0.204 inches maximum fastener length, 3a thread class, right-hand thread direction

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: 0.144 inches minimum and 0.204 inches maximum
Fastener Length: 0.172 inches minimum and 0.204 inches maximum
Head Style: flat chamfer
Head Diameter: 0.112 inches minimum and 0.118 inches maximum
Head Height: 0.0702 inches minimum and 0.0730 inches maximum
Locking Feature: strip or patch or pellet threads
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.073 inches
Width Across Flats: 0.050 inches nominal
Thread Quantity Per Inch: 72
Minimum Tensile Strength: 80000 pounds per square inch
Hardness Rating: 38.0 rockwell c minimum overall
Minimum Yield Strength: 40000 pounds per square inch
Material: steel comp 302 or steel comp 302b or steel comp 303 or steel comp 303se or steel comp 303cu or steel comp 303ma or steel comp 309 or steel comp 304l overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: ep 244 fscm 94697 mfr ref single treatment response overall
Thread Series Designator: unf

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
090-67782	Socket Head Cap Screw
20097-91F3	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-218-8277?

The FSCG of the NSN 5305-01-218-8277 is 5305

Does the NSN 5305-01-218-8277 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-218-8277 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 5305-01-218-8277 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-218-8277 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 5305-01-218-8277 was assigned to the Federal Catalog?

It was assigned 40 years ago, on Sat, Oct 19, 1985