MS16997-78

View detailed technical data, stock status, and sourcing information for: MS16997-78
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-00-983-5346

Item Name Code

16282

Assigment Date

01/01/1962 (64 years ago)

0.608 inches minimum and 0.750 inches maximum thread length, 0.719 inches minimum and 0.750 inches maximum fastener length, flat chamfer head style, right-hand thread direction, 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: 0.608 inches minimum and 0.750 inches maximum
Fastener Length: 0.719 inches minimum and 0.750 inches maximum
Head Style: flat chamfer
Head Diameter: 0.457 inches minimum and 0.468 inches maximum
Head Height: 0.306 inches minimum and 0.312 inches maximum
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.312 inches
Width Across Flats: 0.250 inches minimum and 0.253 inches maximum
Thread Quantity Per Inch: 18
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 45.0 rockwell c maximum overall
Minimum Yield Strength: 130000 pounds per square inch
Material: steel overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response overall
Thread Series Designator: unc
Nondefinitive Spec/Std Data: 6 type

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
5305-00-163-2790	No Name Available	06/20/1973
5305-00-495-7768	No Name Available	06/23/1971

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
0701982	Socket Head Cap Screw
2CH425	Socket Head Cap Screw
3176207-A-121	Socket Head Cap Screw
324-2651-00	Socket Head Cap Screw
500502-4	Socket Head Cap Screw
5305009835346	Socket Head Cap Screw
83-13055-03	Socket Head Cap Screw
858329	Socket Head Cap Screw
MS16997-78	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-00-983-5346?

The FSCG of the NSN 5305-00-983-5346 is 5305

Does the NSN 5305-00-983-5346 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-00-983-5346 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 5305-00-983-5346 contain precious materials?

Precious metal content is unknown

Does NSN 5305-00-983-5346 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 5305-00-983-5346 was assigned to the Federal Catalog?

It was assigned 64 years ago, on Mon, Jan 1, 1962