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74328-6H21

View detailed technical data, stock status, and sourcing information for: 74328-6H21

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74328-6H21
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5306 Bolts
National Stock Number
5306-01-165-3284
Item Name Code
15903
Assigment Date
10/27/1983 (42 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.

right-hand thread direction, 1.911 inches minimum and 1.941 inches maximum fastener length, double hexagon w/hole head style, 3a thread class, 0.589 inches minimum and 0.639 inches maximum 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
0.589 inches minimum and 0.639 inches maximum
Fastener Length
1.911 inches minimum and 1.941 inches maximum
Head Style
double hexagon w/hole
Head Height
0.378 inches minimum and 0.398 inches maximum
Width Between Flats
0.430 inches minimum and 0.439 inches maximum
Extended Washer Diameter
0.639 inches minimum and 0.649 inches maximum
Extended Washer Thickness
0.081 inches minimum and 0.101 inches maximum
Hole Diameter
0.106 inches minimum and 0.111 inches maximum
Grip Diameter
0.3740 inches minimum and 0.3745 inches maximum
Nominal Thread Diameter
0.375 inches
Grip Length
1.302 inches minimum and 1.322 inches maximum
Hole Quantity
4
Hole Type
drilled
Thread Quantity Per Inch
24
Minimum Tensile Strength
220000 pounds per square inch
Hole Configuration Style
double hexagon longitudinal hole
Material
steel comp xm-13 overall
Material Document And Classification
23-112 fscm 76301 mfr ref single material response overall
Surface Treatment
passivate overall
Surface Treatment Document And Classification
qq-p-35 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
74328-6H21 Shear Bolt
AIC752-6H21 Shear Bolt
BM3326-6H21 Shear Bolt
MB84-6H21 Shear Bolt
S371-6H21 Shear Bolt
ST3M571-6H21 Shear Bolt
VAL23033-6H21 Shear Bolt
VS3060-6H21 Shear Bolt

FAQs

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

What is the FSCG of the NSN 5306-01-165-3284?
The FSCG of the NSN 5306-01-165-3284 is 5306
Does the NSN 5306-01-165-3284 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5306-01-165-3284 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 5306-01-165-3284 contain precious materials?
Item does not contain precious metal.
Does NSN 5306-01-165-3284 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 5306-01-165-3284 was assigned to the Federal Catalog?
It was assigned 42 years ago, on Thu, Oct 27, 1983

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