20863-001 FIND 32

View detailed technical data, stock status, and sourcing information for: 20863-001 FIND 32
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-287-7525

Item Name Code

16282

Assigment Date

10/27/1988 (37 years ago)

A screw, machine or screw, cap, socket head whose unthreaded portion is of specified grip length, plated or unplated, and is machined to a tolerance of one thousandth (0.001 in.) (0.025 mm) or less of a specific diameter for items (1.000 in.) (25 mm) or less in diameter. Items over (1.000 in.) (25 mm) in diameter shall have a tolerance of fifteen ten thousandths (0.0015 in.) (0.038 mm) or less. The nominal major diameter of the threads shall be at least one thousandth (0.001 in.) (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. The head is designed to be held or driven with an inserted driver. It is not designed for rotation by the thumb and fingers. A locking feature may be incorporated in the design of the head or threads.

3a thread class, flat chamfer head style, 1.375 inches minimum thread length, 4.920 inches minimum and 5.000 inches maximum fastener length, right-hand thread direction

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: 1.375 inches minimum
Fastener Length: 4.920 inches minimum and 5.000 inches maximum
Head Style: flat chamfer
Head Diameter: 0.642 inches minimum and 0.656 inches maximum
Head Height: 0.430 inches minimum and 0.437 inches maximum
Hole Diameter: 0.061 inches minimum and 0.067 inches maximum
Internal Drive Style: hexagon
End Item Identification: deck machinery;towed array handling equipment;ssbn mk-118 fire control sys;los angeles class ssn (688);sturgeon class ssn (637);seawolf class ssn;sub control & navigation sys;sub armament & fire control;sub acoustic sonar sys;submarine hydraulic systems
Nominal Thread Diameter: 0.438 inches
Width Across Flats: 0.375 inches minimum and 0.379 inches maximum
Hole Quantity: 6
Hole Type: drilled
Thread Quantity Per Inch: 20
Minimum Tensile Strength: 180000 pounds per square inch
Hardness Rating: 39.0 rockwell c minimum and 45.0 rockwell c maximum overall
Minimum Yield Strength: 155000 pounds per square inch
Hole Configuration Style: round internal hexagon
Material: steel overall
Surface Treatment: cadmium and chromate overall
Surface Treatment Document And Classification: qq-p-416 ty 2 cl 2 fed spec single treatment response overall
Thread Series Designator: unrf
Specification/Standard Data: 80205-nas1351 professional/industrial association standard

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
20771-001 FIND 33	Socket Head Cap Screw
20778-004 FIND 38	Socket Head Cap Screw
20789-001 FIND 50	Socket Head Cap Screw
20863-001 FIND 32	Socket Head Cap Screw
8-52N-572-5-080	Socket Head Cap Screw
NAS1351-7H80P	Socket Head Cap Screw

FAQs

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

What is the FSCG of the NSN 5305-01-287-7525?

The FSCG of the NSN 5305-01-287-7525 is 5305

Does the NSN 5305-01-287-7525 have a Schedule B code assigned?

Yes, the Schedule B code is 7318152000

Does NSN 5305-01-287-7525 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 5305-01-287-7525 contain precious materials?

Item does not contain precious metal.

Does NSN 5305-01-287-7525 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 5305-01-287-7525 was assigned to the Federal Catalog?

It was assigned 37 years ago, on Thu, Oct 27, 1988