5306-01-266-8575

Find complete technical information, availability, and procurement data for: 5306-01-266-8575
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-266-8575

Item Name Code

27851

Assigment Date

10/31/1987 (38 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, 1.059 inches nominal thread length, double hexagon head style, 3.121 inches nominal fastener 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: 1.059 inches nominal
Fastener Length: 3.121 inches nominal
Head Style: double hexagon
Head Height: 0.400 inches nominal
Width Between Flats: 1.052 inches minimum and 1.064 inches maximum
Grip Diameter: 0.748 inches minimum and 0.749 inches maximum
Nominal Thread Diameter: 0.750 inches
Grip Length: 2.062 inches nominal
Features Provided: cetyl alcohol lubricant
Thread Quantity Per Inch: 16
Material: steel comp h11 overall
Material Document And Classification: ams 6487 assn std single material response overall
Surface Treatment: cadmium and nickel and chromate 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
11701A12U033	Close Tolerance Bolt
68485-12A033	Close Tolerance Bolt
BM3210-12A033	Close Tolerance Bolt
PBF1042A12U033	Close Tolerance Bolt
STSBG001A12U033	Close Tolerance Bolt
VAL23602-12D033	Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-266-8575?

The FSCG of the NSN 5306-01-266-8575 is 5306

Does the NSN 5306-01-266-8575 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-266-8575 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 5306-01-266-8575 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-266-8575 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 5306-01-266-8575 was assigned to the Federal Catalog?

It was assigned 38 years ago, on Sat, Oct 31, 1987