SS-472-4491222- 25

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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-497-5287

Item Name Code

16282

Assigment Date

10/19/1970 (55 years ago)

1.210 inches minimum and 1.250 inches maximum fastener length, 3a thread class, flat chamfer head style, right-hand thread direction, 1.000 inches minimum thread length

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: 1.000 inches minimum
Fastener Length: 1.210 inches minimum and 1.250 inches maximum
Head Style: flat chamfer
Head Diameter: 0.365 inches minimum and 0.375 inches maximum
Head Height: 0.244 inches minimum and 0.250 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.250 inches
Width Across Flats: 0.188 inches minimum and 0.190 inches maximum
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 80000 pounds per square inch
Hardness Rating: 80.0 rockwell b minimum overall
Minimum Yield Strength: 30000 pounds per square inch
Material: steel comp 302 or steel comp 304 or steel comp 305 or steel comp 316 or steel comp xm-7 overall
Material Document And Classification: 66 fed std 1st material response or 66 fed std 2nd material response or 66 fed std 3rd material response or 66 fed std 4th material response or 66 fed std 5th material response or astm a493 assn std 6th material response overall
Surface Treatment: passivate overall
Surface Treatment Document And Classification: qq-p-35 fed spec single treatment response overall
Thread Series Designator: unrc
Nondefinitive Spec/Std Data: 6 type

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
NAS1352C4-20	Socket Head Cap Screw
SS-472-4491221- 51	Socket Head Cap Screw
SS-472-4491222- 25	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-497-5287?

The FSCG of the NSN 5305-00-497-5287 is 5305

Does the NSN 5305-00-497-5287 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-497-5287 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 5305-00-497-5287 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-497-5287 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 5305-00-497-5287 was assigned to the Federal Catalog?

It was assigned 55 years ago, on Mon, Oct 19, 1970