78991

View detailed technical data, stock status, and sourcing information for: 78991
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-077-9659

Item Name Code

18257

Assigment Date

06/05/1979 (47 years ago)

A puller manually operated by means of gearing, leverage, jack screw, slide hammer, physical impact, or any combination thereof. It includes items with a series of parts to give a different spread and/or reach. For items with additional parts which can be assembled into various different functional combinations, except spread and/or reach, see puller kit, universal. Excludes:hydraulic force actuated items.

0.750 inches minimum thread length, right-hand thread direction, hexagon head style, 2a thread class, 5.320 inches minimum and 5.440 inches maximum 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: 0.750 inches minimum
Fastener Length: 5.320 inches minimum and 5.440 inches maximum
Head Style: hexagon
Head Height: 0.105 inches minimum and 0.120 inches maximum
Width Between Flats: 0.305 inches minimum and 0.312 inches maximum
Nominal Thread Diameter: 0.190 inches
Thread Quantity Per Inch: 32
Minimum Tensile Strength: 120000 pounds per square inch
Hardness Rating: 25.0 rockwell c minimum and 34.0 rockwell c maximum overall
Minimum Yield Strength: 92000 pounds per square inch
Material: steel overall
Surface Treatment: cadmium overall
Surface Treatment Document And Classification: qq-p-416,ty 1,cl 3 fed spec single treatment response overall
Thread Series Designator: unf

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
78991	Hexagon Head Cap Screw
A104-078991	Hexagon Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-077-9659?

The FSCG of the NSN 5305-01-077-9659 is 5305

Does the NSN 5305-01-077-9659 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-077-9659 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 5305-01-077-9659 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-077-9659 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 5305-01-077-9659 was assigned to the Federal Catalog?

It was assigned 47 years ago, on Tue, Jun 5, 1979