5305-01-278-1987

Find complete technical information, availability, and procurement data for: 5305-01-278-1987
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-278-1987

Item Name Code

06673

Assigment Date

05/03/1988 (38 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter. It may have an unthreaded portion with a diameter less than, equal to, or greater than the diameter of the threaded portion. It has either a vertically flattened, circular knurled, splined or smoothed, or wing type head, all of which are designed for rotation by the thumb and fingers. For items having wrenching facilities such as socket recess, multiple spline or slot heads, use screw (as modified) or bolt (as modified).

2a thread class, knurled no. 1 head style, 3.070 inches nominal fastener length, 2.880 inches nominal thread length, 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: 2a
Thread Direction: right-hand
Thread Length: 2.880 inches nominal
Fastener Length: 3.070 inches nominal
Head Style: knurled no. 1
Head Diameter: 1.250 inches nominal
Head Height: 0.550 inches nominal
First Diameter From Head: 0.380 inches minimum and 0.390 inches maximum
Distance From Largest Bearing Surface Of Head To End Of First Diameter: 0.190 inches minimum and 0.250 inches maximum
Point Style: flat
Nominal Thread Diameter: 0.500 inches
Thread Quantity Per Inch: 13
Externally Relieved Body Diameter Quantity: 1
Material: copper alloy 630 overall
Material Document And Classification: qq-c-465 fed spec single material response 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
2850068-1	Thumbscrew

FAQs

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

What is the FSCG of the NSN 5305-01-278-1987?

The FSCG of the NSN 5305-01-278-1987 is 5305

Does the NSN 5305-01-278-1987 have a Schedule B code assigned?

Yes, the Schedule B code is 7415338550

Does NSN 5305-01-278-1987 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 5305-01-278-1987 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-278-1987 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 5305-01-278-1987 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Tue, May 3, 1988