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MS51960-89L Machine Screw

5305-01-581-5688

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Official Item Classification

Name
Machine Screw
Part Number
MS51960-89L
(NSN) National Stock Number
5305-01-581-5688
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5305 Screws
(INC) Item Name Code
06657
(FIIG) Federal Item Identification Guide
A500D0
Date
01/21/2010 (16 years ago)

1.597 inches minimum thread length, 1.688 inches minimum and 1.750 inches maximum fastener length, flat countersunk head style, right-hand thread direction, 2a thread class

Specs & Compatibility

Thread Class

2a

Thread Direction

right-hand

Thread Length

1.597 inches minimum

Fastener Length

1.688 inches minimum and 1.750 inches maximum

Head Style

flat countersunk

Head Diameter

0.452 inches minimum and 0.507 inches maximum

Locking Feature

patch or pellet or strip

Internal Drive Style

cross recess type 1

Nominal Thread Diameter

0.250 inches

Thread Quantity Per Inch

28

Minimum Tensile Strength

80000 pounds per square inch

Countersink Angle

80.0 degrees minimum and 82.0 degrees maximum

Screw Material

steel corrosion resisting

Screw Surface Treatment

passivate

Thread Series Designator

unf

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

0006657

Related Hardware Products

Part Number Description
MS51960-89L Machine Screw

Frequently Asked Questions

What is the FSCG of the NSN 5305-01-581-5688?
The FSCG of the NSN 5305-01-581-5688 is 5305
Does the NSN 5305-01-581-5688 have a Schedule B code assigned?
Yes, the Schedule B code is 7318152000
Does NSN 5305-01-581-5688 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 5305-01-581-5688 contain precious materials?
Item does not contain precious metal.
Does NSN 5305-01-581-5688 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 5305-01-581-5688 was assigned to the Federal Catalog?
It was assigned 16 years ago, on Thu, Jan 21, 2010