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5305-01-102-5531

Close Tolerance Screw

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Official Item Classification

Name
Close Tolerance Screw
(NSN) National Stock Number
5305-01-102-5531
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
29294
(FIIG) Federal Item Identification Guide
A003B0
Date
10/22/1980 (45 years ago)

flat countersunk undercut head style, 3a thread class, right-hand thread direction, 0.505 inches minimum and 0.555 inches maximum thread length, 0.953 inches minimum and 0.983 inches maximum fastener length

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.505 inches minimum and 0.555 inches maximum

Fastener Length

0.953 inches minimum and 0.983 inches maximum

Head Style

flat countersunk undercut

Head Diameter

0.6287 inches minimum and 0.6335 inches maximum

Head Height

0.0878 inches minimum and 0.0898 inches maximum

Grip Diameter

0.3110 inches minimum and 0.3120 inches maximum

Internal Drive Style

high-torque

Nominal Thread Diameter

0.312 inches

Grip Length

0.428 inches minimum and 0.448 inches maximum

Thread Quantity Per Inch

24

Countersink Angle

99.0 degrees minimum and 101.0 degrees maximum

Surface Finish

32.0 microinches grip

Surface Finish

32.0 microinches threads

Material

steel comp xm-13 overall

Material Document And Classification

ams 5629 assn std single material response overall

Surface Treatment

aluminum and chromate overall

Surface Treatment Document And Classification

mil-c-83488 ty 2 cl 3 mil spec single treatment response overall

Thread Series Designator

unjf

Regulatory Compliance

Precious Metals Indicator
U

Precious metal content is unknown

Criticality Code
X

The item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.

Hazardous Metals Indicator
N

Indicates there is no data in the hmirs and the nsn is in a fsc not generally suspected of containing hazardous materials.

Pseudo Item Name Code

0029294

Related Hardware Products

Part Number Description
11881C5-7D Close Tolerance Screw
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Frequently Asked Questions

What is the FSCG of the NSN 5305-01-102-5531?
The FSCG of the NSN 5305-01-102-5531 is 5305
Does the NSN 5305-01-102-5531 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-102-5531 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 5305-01-102-5531 contain precious materials?
Precious metal content is unknown
Does NSN 5305-01-102-5531 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 5305-01-102-5531 was assigned to the Federal Catalog?
It was assigned 45 years ago, on Wed, Oct 22, 1980