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MS21297-05012

View detailed technical data, stock status, and sourcing information for: MS21297-05012

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MS21297-05012
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-01-057-3042
Item Name Code
15903
Assigment Date
03/10/1978 (48 years ago)

A high strength, 160,000 pounds per square inch (1100 megapascals) minimum tensile strength externally threaded fastener designed for use in applications involving great shear stress. The head is designed to accommodate an external wrench or driver. 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. The unthreaded portion is of specific 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. A locking feature may be incorporated in the design of the head or threads. See bolt, machine and bolt, clevis.

0.579 inches minimum and 0.629 inches maximum thread length, 3a thread class, spline extended washer head style, 1.339 inches minimum and 1.369 inches maximum fastener length, 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
0.579 inches minimum and 0.629 inches maximum
Fastener Length
1.339 inches minimum and 1.369 inches maximum
Head Style
spline extended washer
Head Height
0.302 inches minimum and 0.322 inches maximum
Extended Washer Diameter
0.575 inches minimum and 0.585 inches maximum
Extended Washer Thickness
0.035 inches minimum and 0.055 inches maximum
Grip Diameter
0.3110 inches minimum and 0.3120 inches maximum
Head Minor Diameter
0.360 inches minimum and 0.375 inches maximum
Nominal Thread Diameter
0.312 inches
Grip Length
0.740 inches minimum and 0.760 inches maximum
Thread Quantity Per Inch
24
Minimum Tensile Strength
220000 pounds per square inch
Hardness Rating
46.0 rockwell c minimum and 50.0 rockwell c maximum overall
Material
steel comp h11 overall
Surface Treatment
cadmium 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
5306PL1497207 Shear Bolt
MS21297-05012 Shear Bolt
VFK101G5-012 Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-057-3042?
The FSCG of the NSN 5306-01-057-3042 is 5306
Does the NSN 5306-01-057-3042 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-01-057-3042 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 5306-01-057-3042 contain precious materials?
Precious metal content is unknown
Does NSN 5306-01-057-3042 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 5306-01-057-3042 was assigned to the Federal Catalog?
It was assigned 48 years ago, on Fri, Mar 10, 1978

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