HT8171-5-20

View detailed technical data, stock status, and sourcing information for: HT8171-5-20
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-135-2402

Item Name Code

29294

Assigment Date

07/20/1982 (44 years ago)

An item designed to expedite or simplify the connection of two or more electrical conductors without bringing them to a fixed point such as a binding post or terminal. It may have a separate tubular shaped piece of nonmetallic, flexible material designed to be slipped over the crimped first piece to seal the conductor joint through heat sealing.

1.714 inches minimum and 1.761 inches maximum fastener length, 3a thread class, flat countersunk head style, right-hand thread direction, 0.454 inches minimum and 0.521 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: 0.454 inches minimum and 0.521 inches maximum
Fastener Length: 1.714 inches minimum and 1.761 inches maximum
Head Style: flat countersunk
Head Diameter: 0.573 inches minimum and 0.635 inches maximum
Grip Diameter: 0.3108 inches minimum and 0.3117 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.312 inches
Grip Length: 1.240 inches minimum and 1.260 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
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 32.0 microinches grip
Part Name Assigned By Controlling Agency: navy special project
Material: steel comp h11 overall
Material Document And Classification: ams 6487 assn std single material response overall
Surface Treatment: cadmium or cadmium and chromate overall
Surface Treatment Document And Classification: nas 672 assn std 1st treatment response or mil-c-8837 ty 2 cl 2 mil spec 2nd 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
106706H-5-A20	Close Tolerance Screw
GB510BC5-20	Close Tolerance Screw
H148-5-20	Close Tolerance Screw
HT8171-5-20	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-135-2402?

The FSCG of the NSN 5305-01-135-2402 is 5305

Does the NSN 5305-01-135-2402 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-135-2402 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 5305-01-135-2402 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-135-2402 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 5305-01-135-2402 was assigned to the Federal Catalog?

It was assigned 44 years ago, on Tue, Jul 20, 1982