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SC5027-4-13A Close Tolerance Screw

5305-01-329-9738

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Official Item Classification

Name
Close Tolerance Screw
Part Number
SC5027-4-13A
(NSN) National Stock Number
5305-01-329-9738
(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
11/28/1990 (35 years ago)

3a thread class, 1.200 inches minimum and 1.230 inches maximum fastener length, 0.403 inches nominal thread length, right-hand thread direction, flat countersunk head style

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.403 inches nominal

Fastener Length

1.200 inches minimum and 1.230 inches maximum

Head Style

flat countersunk

Head Diameter

0.5026 inches minimum and 0.5111 inches maximum

Grip Diameter

0.2485 inches minimum and 0.2495 inches maximum

Internal Drive Style

offset cruciform (torque set)

Nominal Thread Diameter

0.250 inches

Grip Length

0.802 inches minimum and 0.822 inches maximum

Thread Quantity Per Inch

28

Countersink Angle

129.0 degrees minimum and 131.0 degrees maximum

Surface Finish

32.0 microinches bearing surface of head

Surface Finish

32.0 microinches grip

Surface Finish

32.0 microinches threads

Material

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

aluminum overall

Surface Treatment Document And Classification

nas 4006 assn std single treatment response overall

Thread Series Designator

unjf

Regulatory Compliance

Precious Metals Indicator
A

Item does not contain precious metal.

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

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Frequently Asked Questions

What is the FSCG of the NSN 5305-01-329-9738?
The FSCG of the NSN 5305-01-329-9738 is 5305
Does the NSN 5305-01-329-9738 have a Schedule B code assigned?
Yes, the Schedule B code is 8109900000
Does NSN 5305-01-329-9738 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 5305-01-329-9738 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-329-9738 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 5305-01-329-9738 was assigned to the Federal Catalog?
It was assigned 35 years ago, on Wed, Nov 28, 1990