5306-01-412-1257

Find complete technical information, availability, and procurement data for: 5306-01-412-1257
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5306 Bolts

National Stock Number

5306-01-412-1257

Item Name Code

15903

Assigment Date

04/12/1995 (31 years ago)

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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 designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

3a thread class, 2.653 inches minimum and 2.683 inches maximum fastener length, dished hexagon head style, right-hand thread direction, 0.543 inches nominal thread 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: 0.543 inches nominal
Fastener Length: 2.653 inches minimum and 2.683 inches maximum
Head Style: dished hexagon
Head Height: 0.312 inches minimum and 0.327 inches maximum
Width Between Flats: 0.928 inches minimum and 0.940 inches maximum
Grip Diameter: 0.623 inches minimum and 0.624 inches maximum
Shank Unthreaded Hole Diameter: 0.141 inches minimum and 0.151 inches maximum threads
Nominal Thread Diameter: 0.625 inches
Grip Length: 2.115 inches minimum and 2.130 inches maximum
Thread Quantity Per Inch: 18
Minimum Tensile Strength: 160000 pounds per square inch
Minimum Yield Strength: 95000 pounds per square inch
Distance From Head Largest Bearing Surface To Shank Hole Center: 2.544 inches minimum and 2.559 inches maximum threads
Special Features: two holes in threads at 90 degrees angular
Material: steel comp 4340 or steel comp 8735 overall
Material Document And Classification: mil-s-5000 mil spec 1st material response or mil-s-6049 mil spec 2nd material response or ams6322 assn std 2nd material response overall
Surface Treatment: cadmium and chromate fastener
Surface Treatment: chromium bearing surface of head
Surface Treatment: chromium grip
Surface Treatment Document And Classification: qq-c-320, type 1, class 2 fed spec single treatment response bearing surface of head
Surface Treatment Document And Classification: qq-c-320, type 1, class 2 fed spec single treatment response grip
Surface Treatment Document And Classification: qq-p-416, type 2, class 2 fed spec all treatment responses fastener
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
S4928913-10-34	Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-412-1257?

The FSCG of the NSN 5306-01-412-1257 is 5306

Does the NSN 5306-01-412-1257 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5306-01-412-1257 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 5306-01-412-1257 contain precious materials?

Item does not contain precious metal.

Does NSN 5306-01-412-1257 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 5306-01-412-1257 was assigned to the Federal Catalog?

It was assigned 31 years ago, on Wed, Apr 12, 1995