5305-01-170-3187

Find complete technical information, availability, and procurement data for: 5305-01-170-3187
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-170-3187

Item Name Code

29294

Assigment Date

01/23/1984 (42 years ago)

A nut, flat on top and bottom having 6 flat sides. For items which have internal tapered or straight (parallel) pipe threads, specific electrical conduit size designation, and which when installed, provide a method of tightening to lock the connection, see locknut, electrical conduit. See also locknut, tube fitting. For items having a thickness (or height) exceeding two times the width across the flats, use post, electrical-mechanical equipment. (when height or thickness and/or width across the flats is designated as a tolerance dimension, the maximum dimension will be used to determine compliance.)

3a thread class, right-hand thread direction, 0.505 inches minimum and 0.572 inches maximum thread length, 1.327 inches minimum and 1.374 inches maximum fastener length, flat countersunk undercut head style

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: 0.505 inches minimum and 0.572 inches maximum
Fastener Length: 1.327 inches minimum and 1.374 inches maximum
Head Style: flat countersunk undercut
Head Diameter: 0.575 inches minimum and 0.635 inches maximum
Head Height: 0.088 inches minimum and 0.090 inches maximum
Grip Diameter: 0.3115 inches minimum and 0.3120 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.312 inches
Grip Length: 0.802 inches minimum and 0.822 inches maximum
Thread Quantity Per Inch: 24
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches grip
Surface Finish: 32.0 microinches threads
Special Features: furnished with one o-ring
Material: steel comp xm-13 overall
Material Document And Classification: ams 5629 assn std 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
10115523	Close Tolerance Screw
HT4020-5-13A	Close Tolerance Screw
ST3M652C5-13A	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-170-3187?

The FSCG of the NSN 5305-01-170-3187 is 5305

Does the NSN 5305-01-170-3187 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-170-3187 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 5305-01-170-3187 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-170-3187 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 5305-01-170-3187 was assigned to the Federal Catalog?

It was assigned 42 years ago, on Mon, Jan 23, 1984