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5306-00-300-2661

Find complete technical information, availability, and procurement data for: 5306-00-300-2661

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5306-00-300-2661
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-00-300-2661
Item Name Code
27851
Assigment Date
09/28/1973 (52 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.

0.810 inches minimum and 0.830 inches maximum fastener length, 0.236 inches minimum and 0.318 inches maximum thread length, dished hexagon head style, 3a 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
3a
Thread Direction
right-hand
Thread Length
0.236 inches minimum and 0.318 inches maximum
Fastener Length
0.810 inches minimum and 0.830 inches maximum
Head Style
dished hexagon
Head Height
0.095 inches minimum and 0.110 inches maximum
Width Between Flats
0.367 inches minimum and 0.376 inches maximum
Locking Feature
detent ring grip
Grip Diameter
0.1885 inches minimum and 0.1894 inches maximum
Shank Unthreaded Hole Diameter
0.070 inches minimum and 0.080 inches maximum first hole
Nominal Thread Diameter
0.190 inches
Grip Length
0.438 inches minimum and 0.454 inches maximum
Thread Quantity Per Inch
32
Minimum Tensile Strength
95000 pounds per square inch
Hardness Rating
36.0 rockwell c minimum and 41.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center
0.717 inches minimum and 0.747 inches maximum first hole
Surface Finish
63.0 microinches bearing surface of head
Surface Finish
63.0 microinches grip
Material
steel comp e4340 or steel comp 4140 or steel comp 8740 or steel comp 4130 or steel comp 6150 overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416 ty 2 cl 2 fed 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
MS27576-3-07 Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-300-2661?
The FSCG of the NSN 5306-00-300-2661 is 5306
Does the NSN 5306-00-300-2661 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-300-2661 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 5306-00-300-2661 contain precious materials?
Item does not contain precious metal.
Does NSN 5306-00-300-2661 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 5306-00-300-2661 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Fri, Sep 28, 1973

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