BACS12GU3K37

View detailed technical data, stock status, and sourcing information for: BACS12GU3K37
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-338-4568

Item Name Code

06657

Assigment Date

05/04/1991 (35 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no 0 (0.060 in./1.5 mm) or larger, designed to be held or driven with either a wrench or an inserted driver or both (excluding internal socket or internal multiple spline types), in sizes below no. 10 (0.190 in./5 mm). No. 10 and larger sizes must have a head designed for any type inserted driver (excluding internal socket or internal multiple spline types), but may also be designed for external wrenching. A locking feature may be incorporated in the design of the head or threads. Excludes:bolt, clevis; bolt, externally relieved body; screw, externally relieved body; and screw, assembled washer. See also, screw, instrument; bolt, machine; bolt, internal wrenching; and screw, cap socket head.

right-hand thread direction, hexagon head style, 3a thread class, 2.296 inches minimum and 2.343 inches maximum fastener length, 2.218 inches nominal thread length

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: 2.218 inches nominal
Fastener Length: 2.296 inches minimum and 2.343 inches maximum
Head Style: hexagon
Head Height: 0.105 inches minimum and 0.120 inches maximum
Width Between Flats: 0.305 inches minimum and 0.314 inches maximum
Internal Drive Style: cross recess type 1
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Screw Material: titanium alloy uns r56400
Screw Material Document And Classification: ams4928 assn std single material response or ams4967 assn std single material response
Screw Surface Treatment: aluminum
Thread Series Designator: unjf

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
BACS12GU3K37	Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-01-338-4568?

The FSCG of the NSN 5305-01-338-4568 is 5305

Does the NSN 5305-01-338-4568 have a Schedule B code assigned?

Yes, the Schedule B code is 8108908000

Does NSN 5305-01-338-4568 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 5305-01-338-4568 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-338-4568 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 5305-01-338-4568 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Sat, May 4, 1991