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5305-00-958-3726

Find complete technical information, availability, and procurement data for: 5305-00-958-3726

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5305-00-958-3726
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-958-3726
Item Name Code
06657
Assigment Date
01/01/1962 (64 years ago)

An externally threaded fastener designed for insertion through holes in assembled parts and normally intended to be tightened or released by torquing a nut. The threaded and unthreaded portions are both of one nominal diameter of 0.190 inch (5 mm) or larger. The head is not designed to be held or driven with an inserted driver or by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads. Head dimensions and sizes of threaded and unthreaded portions shall conform to internationally recognized fastener standards. For items having a grip length portion machined to a tolerance of 0.0015 inch (0.038 mm) or less, bolt, shear. See also screw, cap, hexagon head and screw, machine.

right-hand thread direction, 1.750 inches minimum thread length, flat countersunk head style, 2a thread class, 3.000 inches nominal fastener 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
2a
Thread Direction
right-hand
Thread Length
1.750 inches minimum
Fastener Length
3.000 inches nominal
Head Style
flat countersunk
Head Diameter
0.568 inches minimum and 0.635 inches maximum
Internal Drive Style
cross recess type 1
Nominal Thread Diameter
0.312 inches
Thread Quantity Per Inch
18
Minimum Tensile Strength
55000 pounds per square inch
Countersink Angle
80.0 degrees minimum and 82.0 degrees maximum
Screw Material
steel comp 1010 or steel comp 1011 or steel comp 1013
Screw Material Document And Classification
66 fed std all material responses
Screw Surface Treatment
cadmium and chromate
Screw Surface Treatment Document And Classification
qq-p-416,ty 2 cl 3 fed spec single treatment response
Thread Series Designator
unc

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN Name Date
5305-00-276-8092 Machine Screw 07/01/2025
5305-00-515-8869 No Name Available 09/01/2023

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
MS35190-314 Machine Screw

FAQs

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

What is the FSCG of the NSN 5305-00-958-3726?
The FSCG of the NSN 5305-00-958-3726 is 5305
Does the NSN 5305-00-958-3726 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-958-3726 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 5305-00-958-3726 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-958-3726 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 5305-00-958-3726 was assigned to the Federal Catalog?
It was assigned 64 years ago, on Mon, Jan 1, 1962

Professional Distribution

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