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5305-01-503-8958

Close Tolerance Screw

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Official Item Classification

Name
Close Tolerance Screw
(NSN) National Stock Number
5305-01-503-8958
(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
01/13/2003 (23 years ago)

0.469 inches nominal thread length, oval countersunk head style, right-hand thread direction, 1.454 inches minimum and 1.484 inches maximum fastener length, 3a thread class

Specs & Compatibility

Thread Class

3a

Thread Direction

right-hand

Thread Length

0.469 inches nominal

Fastener Length

1.454 inches minimum and 1.484 inches maximum

Head Style

oval countersunk

Head Diameter

0.3898 inches minimum and 0.3948 inches maximum

Grip Diameter

0.2490 inches minimum and 0.2495 inches maximum

Internal Drive Style

high-torque

Nominal Thread Diameter

0.2500 inches

Grip Length

0.990 inches minimum and 1.010 inches maximum

Thread Quantity Per Inch

28

Countersink Angle

99.0 degrees minimum and 101.0 degrees maximum

Special Features

item is for use in applications requiring high shear and/or moderate staticor dynamic tension capabilities

Material

nickel alloy 718 overall

Material Document And Classification

ams 5662 assn std single material 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

Related Hardware Products

Part Number Description
11923-4-16 Close Tolerance Screw
HT4027-4-16 Close Tolerance Screw
ST3M557-4-16 Close Tolerance Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-503-8958?
The FSCG of the NSN 5305-01-503-8958 is 5305
Does the NSN 5305-01-503-8958 have a Schedule B code assigned?
Yes, the Schedule B code is 7508900000
Does NSN 5305-01-503-8958 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 5305-01-503-8958 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-503-8958 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 5305-01-503-8958 was assigned to the Federal Catalog?
It was assigned 23 years ago, on Mon, Jan 13, 2003