681-1849-1

View detailed technical data, stock status, and sourcing information for: 681-1849-1
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-045-4211

Item Name Code

06657

Assigment Date

08/01/1977 (48 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.

0.275 inches minimum and 0.323 inches maximum thread length, 0.344 inches minimum and 0.406 inches maximum fastener length, flat countersunk head style, 2a thread class, 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: 0.275 inches minimum and 0.323 inches maximum
Fastener Length: 0.344 inches minimum and 0.406 inches maximum
Head Style: flat countersunk
Head Diameter: 0.257 inches minimum and 0.279 inches maximum
Internal Drive Style: slot
Nominal Thread Diameter: 0.138 inches
Thread Quantity Per Inch: 32
Countersink Angle: 81.0 degrees nominal
Part Name Assigned By Controlling Agency: navy special project
Screw Material: steel comp 1010 or steel comp 1020
Screw Material Document And Classification: aisi assn std all material responses
Screw Surface Treatment: cadmium
Screw Surface Treatment Document And Classification: qq-p-416 ty 2 cl 3 fed spec single treatment response
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
681-1849-1	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-045-4211?

The FSCG of the NSN 5305-01-045-4211 is 5305

Does the NSN 5305-01-045-4211 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-045-4211 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 5305-01-045-4211 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-045-4211 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 5305-01-045-4211 was assigned to the Federal Catalog?

It was assigned 48 years ago, on Mon, Aug 1, 1977