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5306-00-639-1750

Find complete technical information, availability, and procurement data for: 5306-00-639-1750

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5306-00-639-1750
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-00-639-1750
Item Name Code
06666
Assigment Date
01/01/1963 (63 years ago)

An externally threaded fastener whose threaded portion is of one nominal diameter, no. 10 (0.190 in.) (5 mm) or larger. It is designed with an internal socket or internal multiple spline for use with an internal driver. The head is beveled (conical) or cylindrical in shape. Items with cylindrical shaped heads must have an externally relieved body. A locking feature may be incorporated in the design of the head or threads. See also screw, cap, socket head. Excludes:setscrew; screw, shoulder; bolt, shoulder; screw, externally relieved body; bolt, externally relieved body; and screw, machine.

0.428 inches minimum and 0.438 inches maximum head diameter, 0.475 inches minimum and 0.525 inches maximum thread length, 2.610 inches minimum and 2.640 inches maximum fastener length, 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
0.475 inches minimum and 0.525 inches maximum
Fastener Length
2.610 inches minimum and 2.640 inches maximum
Head Diameter
0.428 inches minimum and 0.438 inches maximum
Head Height
0.250 inches nominal
Hole Diameter
0.037 inches nominal
Internal Drive Style
hexagon
Nominal Thread Diameter
0.250 inches
Width Across Flats
0.188 inches minimum and 0.190 inches maximum
Hole Quantity
4
Hole Type
drilled
Thread Quantity Per Inch
28
Minimum Tensile Strength
160000 pounds per square inch
Hardness Rating
34.0 rockwell c minimum and 40.0 rockwell c maximum overall
Hole Configuration Style
round internal hexagon
Material
steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
Material Document And Classification
mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response 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
unf

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5306-01-314-3024 No Name Available 06/01/1994

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
3189127 FIND 33 Internal Wrenching Bolt
MS20004H34 Internal Wrenching Bolt
NAS144DH-42 Internal Wrenching Bolt
NAS144DH42 Internal Wrenching Bolt

FAQs

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

What is the FSCG of the NSN 5306-00-639-1750?
The FSCG of the NSN 5306-00-639-1750 is 5306
Does the NSN 5306-00-639-1750 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-00-639-1750 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 5306-00-639-1750 contain precious materials?
Item does not contain precious metal.
Does NSN 5306-00-639-1750 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 5306-00-639-1750 was assigned to the Federal Catalog?
It was assigned 63 years ago, on Tue, Jan 1, 1963

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