120978-6-D28N

View detailed technical data, stock status, and sourcing information for: 120978-6-D28N
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-336-6318

Item Name Code

27851

Assigment Date

03/31/1991 (35 years ago)

An externally threaded fastener whose unthreaded portion is of a specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001) of an inch (0.025 mm) or less of a specific diameter for items one inch (25 mm) or less in diameter. Items over one inch (25 mm) in diameter shall have a tolerance of fifteen ten-thousandths (0.0015) of an inch (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001) of an inch (0.025 mm) below the minimum shank diameter, but not below the minimum major diameter for applicable class of fit, as shown in the screw thread standards, fed std h28 and/or other nationally recognized standards. The head is not designed to be held or driven with an inserted driver, nor is it designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. For items having close tolerance, and fabricated from material having 160,000 pounds per square inch (1100 megapascals) minimum tensile strength, see bolt, shear. For items fabricated from material having less than 160,000 pounds per square inch (1100 megapascals) minimum tensile strength and not having a close tolerance, see bolt, machine.

3a thread class, right-hand thread direction, 0.454 inches minimum and 0.570 inches maximum thread length, 2.189 inches minimum and 2.219 inches maximum fastener length, spline drive shear head head style

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: 0.454 inches minimum and 0.570 inches maximum
Fastener Length: 2.189 inches minimum and 2.219 inches maximum
Head Style: spline drive shear head
Head Height: 0.210 inches nominal
Grip Diameter: 0.373 inches minimum and 0.374 inches maximum
Head Minor Diameter: 0.679 inches nominal
End Item Identification: pacer dawn
Nominal Thread Diameter: 0.3750 inches
Grip Length: 1.740 inches minimum and 1.760 inches maximum
Thread Quantity Per Inch: 24
Special Features: dry film lube on bearing surface of head:hole drilled in shank,0.106 in. dia x 0.373/0.374 in. nom deep
Material: steel comp h11 overall
Material Document And Classification: ams-6487 assn std single material response overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: nas672 national spec single treatment response overall
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
120978-6-D28N	Close Tolerance Bolt
5306-002-6DN28	Close Tolerance Bolt
AIC596-6DN28	Close Tolerance Bolt
H411-6DN28	Close Tolerance Bolt
PBF7521-6DN28	Close Tolerance Bolt
VCG0030-6DN28	Close Tolerance Bolt
VS3133-6DN28	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-336-6318?

The FSCG of the NSN 5306-01-336-6318 is 5306

Does the NSN 5306-01-336-6318 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-336-6318 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 5306-01-336-6318 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-336-6318 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 5306-01-336-6318 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Sun, Mar 31, 1991