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5305-00-280-3340

Find complete technical information, availability, and procurement data for: 5305-00-280-3340

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5305-00-280-3340
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-280-3340
Item Name Code
29294
Assigment Date
08/17/1973 (52 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.

0.378 inches minimum and 0.428 inches maximum thread length, 0.888 inches minimum and 0.918 inches maximum fastener length, right-hand thread direction, flat countersunk head style, 3a thread class

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
0.378 inches minimum and 0.428 inches maximum
Fastener Length
0.888 inches minimum and 0.918 inches maximum
Head Style
flat countersunk
Head Diameter
0.355 inches minimum and 0.397 inches maximum
Grip Diameter
0.2641 inches minimum and 0.2651 inches maximum
Internal Drive Style
high-torque
Nominal Thread Diameter
0.250 inches
Grip Length
0.490 inches minimum and 0.510 inches maximum
Thread Quantity Per Inch
28
Minimum Tensile Strength
160000 pounds per square inch
Countersink Angle
99.0 degrees minimum and 101.0 degrees maximum
Surface Finish
32.0 microinches bearing surface of head
Surface Finish
32.0 microinches grip
Surface Finish
32.0 microinches threads
Material
steel comp 4140 or steel comp e4340 or steel comp 6150 or steel comp 8735 or steel comp 8740 overall
Material Document And Classification
mil-s-5626 mil spec 1st material response or mil-s-5000 mil spec 2nd material response or mil-s-8503 mil spec 3rd material response or mil-s-6098 mil spec 4th material response or mil-s-6049 mil spec 5th material response 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
unjf

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FAQs

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

What is the FSCG of the NSN 5305-00-280-3340?
The FSCG of the NSN 5305-00-280-3340 is 5305
Does the NSN 5305-00-280-3340 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-280-3340 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 5305-00-280-3340 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-280-3340 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 5305-00-280-3340 was assigned to the Federal Catalog?
It was assigned 52 years ago, on Fri, Aug 17, 1973

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