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MS27576-6-30

View detailed technical data, stock status, and sourcing information for: MS27576-6-30

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MS27576-6-30
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-00-138-6388
Item Name Code
27851
Assigment Date
07/30/1971 (54 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.

dished hexagon head style, right-hand thread direction, 0.357 inches minimum and 0.439 inches maximum thread length, 2.414 inches minimum and 2.434 inches maximum fastener length, 3a thread class

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
0.357 inches minimum and 0.439 inches maximum
Fastener Length
2.414 inches minimum and 2.434 inches maximum
Head Style
dished hexagon
Head Height
0.189 inches minimum and 0.204 inches maximum
Width Between Flats
0.553 inches minimum and 0.564 inches maximum
Grip Diameter
0.3733 inches minimum and 0.3742 inches maximum
Shank Unthreaded Hole Diameter
0.106 inches minimum and 0.116 inches maximum first hole
Nominal Thread Diameter
0.375 inches
Grip Length
1.875 inches minimum and 1.891 inches maximum
Thread Quantity Per Inch
24
Hardness Rating
36.0 rockwell c minimum and 41.0 rockwell c maximum overall
Distance From Head Largest Bearing Surface To Shank Hole Center
2.299 inches minimum and 2.329 inches maximum first hole
Surface Finish
63.0 microinches bearing surface of head
Surface Finish
63.0 microinches grip
Special Features
w/retaining element on shank
Material
steel overall
Material Document And Classification
mil-b-83050 mil spec single material response overall
Surface Treatment
cadmium and chromate overall
Surface Treatment Document And Classification
qq-p-416,ty 2,cl 2 fed spec all treatment responses 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
106467-6-30 Close Tolerance Bolt
AS194-6-30 Close Tolerance Bolt
CA4510-6-30 Close Tolerance Bolt
MS27576-6-30 Close Tolerance Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-138-6388?
The FSCG of the NSN 5306-00-138-6388 is 5306
Does the NSN 5306-00-138-6388 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-138-6388 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 5306-00-138-6388 contain precious materials?
Precious metal content is unknown
Does NSN 5306-00-138-6388 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 5306-00-138-6388 was assigned to the Federal Catalog?
It was assigned 54 years ago, on Fri, Jul 30, 1971

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