5305-01-337-8498

Find complete technical information, availability, and procurement data for: 5305-01-337-8498
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5305 Screws

National Stock Number

5305-01-337-8498

Item Name Code

29294

Assigment Date

04/22/1991 (35 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, 0.578 inches nominal thread length, flat countersunk head style, right-hand thread direction, 1.688 inches minimum and 1.718 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: 3a
Thread Direction: right-hand
Thread Length: 0.578 inches nominal
Fastener Length: 1.688 inches minimum and 1.718 inches maximum
Head Style: flat countersunk
Head Diameter: 0.708 inches minimum and 0.765 inches maximum
Grip Diameter: 0.3735 inches minimum and 0.3745 inches maximum
Internal Drive Style: high-torque
Nominal Thread Diameter: 0.375 inches
Grip Length: 1.115 inches minimum and 1.135 inches maximum
Features Provided: cetyl alcohol lubricant
Thread Quantity Per Inch: 24
Countersink Angle: 99.0 degrees minimum and 101.0 degrees maximum
Surface Finish: 63.0 microinches bearing surface of head32.0 microinches grip32.0 microinches threads
Special Features: red dye or paint on thread end before lubrication
Material: titanium alloy uns r56400 overall
Material Document And Classification: ams 4928 assn std single material response or ams 4967 assn std single material response overall
Surface Treatment: phosphate overall
Surface Treatment Document And Classification: bac 5861,cage81205 mfr ref 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
BACB30MS6R18	Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-01-337-8498?

The FSCG of the NSN 5305-01-337-8498 is 5305

Does the NSN 5305-01-337-8498 have a Schedule B code assigned?

Yes, the Schedule B code is 8109900000

Does NSN 5305-01-337-8498 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 5305-01-337-8498 contain precious materials?

Precious metal content is unknown

Does NSN 5305-01-337-8498 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 5305-01-337-8498 was assigned to the Federal Catalog?

It was assigned 35 years ago, on Mon, Apr 22, 1991