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5305-00-143-1855

Find complete technical information, availability, and procurement data for: 5305-00-143-1855

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5305-00-143-1855
Federal Supply Group
Hardware and Abrasives
Federal Supply Classification
5305 Screws
National Stock Number
5305-00-143-1855
Item Name Code
29294
Assigment Date
10/11/1968 (57 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.

0.427 inches minimum and 0.494 inches maximum thread length, 3a thread class, 1.437 inches minimum and 1.484 inches maximum fastener length, right-hand thread direction, flat countersunk head style

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
0.427 inches minimum and 0.494 inches maximum
Fastener Length
1.437 inches minimum and 1.484 inches maximum
Head Style
flat countersunk
Head Diameter
0.634 inches minimum and 0.668 inches maximum
Grip Diameter
0.4360 inches minimum and 0.4370 inches maximum
Internal Drive Style
offset cruciform (torque set)
Nominal Thread Diameter
0.437 inches
Grip Length
0.990 inches minimum and 1.010 inches maximum
Thread Quantity Per Inch
20
Hardness Rating
46.0 rockwell c minimum and 50.0 rockwell c maximum overall
Countersink Angle
99.5 degrees minimum and 100.5 degrees maximum
Material
steel comp h11 overall
Surface Treatment
cadmium overall
Surface Treatment Document And Classification
nas 672 assn std 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
106334-7-16 Close Tolerance Screw
202-15522-7-16 Close Tolerance Screw

FAQs

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

What is the FSCG of the NSN 5305-00-143-1855?
The FSCG of the NSN 5305-00-143-1855 is 5305
Does the NSN 5305-00-143-1855 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-00-143-1855 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 5305-00-143-1855 contain precious materials?
Precious metal content is unknown
Does NSN 5305-00-143-1855 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 5305-00-143-1855 was assigned to the Federal Catalog?
It was assigned 57 years ago, on Fri, Oct 11, 1968

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