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00491B O-Ring

5331-00-756-2004

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Official Item Classification

Name
O-Ring
Part Number
00491B
(NSN) National Stock Number
5331-00-756-2004
(FSG) Federal Supply Group
53 Hardware and Abrasives
(FSC) Federal Supply Classification
5331 O-Ring
(INC) Item Name Code
47946
(FIIG) Federal Item Identification Guide
A510X0
Date
01/01/1960 (66 years ago)

4.969 inches minimum and 4.999 inches maximum center hole diameter, 0.135 inches minimum and 0.143 inches maximum cross-sectional height, 5.219 inches minimum and 5.305 inches maximum outside diameter, 65.0 shore durometer a nominal hardness rating, rubber synthetic material

Specs & Compatibility

Outside Diameter

5.219 inches minimum and 5.305 inches maximum

Cross-Sectional Height

0.135 inches minimum and 0.143 inches maximum

Center Hole Diameter

4.969 inches minimum and 4.999 inches maximum

Hardness Rating

65.0 shore durometer a nominal

Material

rubber synthetic

Replacement For

Part Number Description
5330-00-857-5831 No Name Available 01/03/1968

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

0047946

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Part Number Description
00491B O-Ring
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N0674-70-2-250 O-Ring
PRP568-250-4024-65 O-Ring

Frequently Asked Questions

What is the FSCG of the NSN 5331-00-756-2004?
The FSCG of the NSN 5331-00-756-2004 is 5331
Does the NSN 5331-00-756-2004 have a Schedule B code assigned?
Yes, the Schedule B code is 4016930000
Does NSN 5331-00-756-2004 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 5331-00-756-2004 contain precious materials?
Precious metal content is unknown
Does NSN 5331-00-756-2004 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 5331-00-756-2004 was assigned to the Federal Catalog?
It was assigned 66 years ago, on Fri, Jan 1, 1960