12705-20F-56B

View detailed technical data, stock status, and sourcing information for: 12705-20F-56B
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-051-9628

Item Name Code

22846

Assigment Date

12/08/1977 (48 years ago)

1.064 inches minimum and 1.250 inches maximum thread length, right-hand thread direction, 4.727 inches minimum and 4.753 inches maximum fastener length, flat chamfer 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: 1.064 inches minimum and 1.250 inches maximum
Fastener Length: 4.727 inches minimum and 4.753 inches maximum
Head Style: flat chamfer
Head Diameter: 1.723 inches minimum and 1.750 inches maximum
Head Height: 0.741 inches minimum and 0.750 inches maximum
Shoulder Diameter: 1.247 inches minimum and 1.248 inches maximum first shoulder
Shoulder Length: 3.497 inches minimum and 3.503 inches maximum first shoulder
Internal Drive Style: hexagon
Nominal Thread Diameter: 0.875 inches
Width Across Flats: 0.625 inches nominal
Thread Quantity Per Inch: 14
Minimum Tensile Strength: 160000 pounds per square inch
Hardness Rating: 36.0 rockwell c minimum and 43.0 rockwell c maximum overall
Shoulder Shape: round first shoulder
Material: steel overall
Surface Treatment: oxide 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
12705-20F-56B	Shoulder Screw

FAQs

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

What is the FSCG of the NSN 5305-01-051-9628?

The FSCG of the NSN 5305-01-051-9628 is 5305

Does the NSN 5305-01-051-9628 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-051-9628 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 5305-01-051-9628 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-051-9628 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 5305-01-051-9628 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Thu, Dec 8, 1977