12387270-81

View detailed technical data, stock status, and sourcing information for: 12387270-81
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-377-4355

Item Name Code

16282

Assigment Date

07/16/1993 (33 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. The head has an internal socket or multiple spline for use with an inserted driver. A locking feature may be incorporated in the design of the head or threads. Excludes:items with bevel (conical) heads. See bolt, internal wrenching. Excludes:screw, shoulder; and screw, machine.

right-hand thread direction, 1.068 inches minimum and 1.250 inches maximum thread length, flat chamfer head style, 1.210 inches minimum and 1.250 inches maximum fastener length, 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: 1.068 inches minimum and 1.250 inches maximum
Fastener Length: 1.210 inches minimum and 1.250 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
End Item Identification: mrap - m-atv with cs13 pop and sne
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
Color: bronze or olive drab overall
Material: steel overall
Surface Treatment: chromate overall
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
12387270-81	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-377-4355?

The FSCG of the NSN 5305-01-377-4355 is 5305

Does the NSN 5305-01-377-4355 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-377-4355 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 5305-01-377-4355 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-377-4355 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 5305-01-377-4355 was assigned to the Federal Catalog?

It was assigned 33 years ago, on Fri, Jul 16, 1993