HCF1258

View detailed technical data, stock status, and sourcing information for: HCF1258
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Federal Supply Group

Hardware and Abrasives

Federal Supply Classification

5330 Packing and Gasket Materials

National Stock Number

5330-00-740-9630

Item Name Code

04522

Assigment Date

01/01/1961 (65 years ago)

0.562 inches nominal hole diameter, 6.500 inches nominal bolt circle diameter, 5.625 inches nominal aperture diameter, 7.500 inches nominal overall width, solid single or composition cross-sectional shape style

Product Characteristics

Below you’ll find the complete technical specifications and performance data for this part, including material details and compliance information.

Cross-Sectional Shape Style: solid single or composition
Hole Diameter: 0.562 inches nominal
Bolt Circle Diameter: 6.500 inches nominal
Overall Width: 7.500 inches nominal
Aperture Diameter: 5.625 inches nominal
Outside Corner Radius: 0.500 inches nominal
Side Radius From Gasket Center: 3.375 inches nominal
Cross-Sectional Thickness: 0.005 inches minimum and 0.008 inches maximum
Bolt Hole Quantity: 6
Material: paper and glue overall
Material Document And Classification: mil-g-12803,no. +3313-b mil spec all material responses overall
Style Designator: non-circular

Replaces National Stock Numbers

Below is a list of NSNs that have been officially superseded by this NSN:

NSN	Name	Date
2320-00-342-6528	No Name Available	01/01/1963

Related Parts

This NSN group includes multiple components designed to meet specific performance and operational standards. Each listing provides detailed specs, functionality data, and replacement compatibility information:

Part Number	Name
113575R1	Gasket
1657N2	Gasket
7409630	Gasket
915504	Gasket
HCF1258	Gasket
KC9343	Gasket

FAQs

Find helpful answers about installation, operation, maintenance, compliance, and troubleshooting.

What is the FSCG of the NSN 5330-00-740-9630?

The FSCG of the NSN 5330-00-740-9630 is 5330

Does NSN 5330-00-740-9630 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 5330-00-740-9630 contain precious materials?

Precious metal content is unknown

Does NSN 5330-00-740-9630 contain hazardous materials?

Indicates there is no information in the hmirs. The nsn is in a fsc in table ii of fed std 313 and a msds may be required by the user. The requirement for a msds is dependent on a hazard determination of the supplier or the intended end use of item.

When the NSN 5330-00-740-9630 was assigned to the Federal Catalog?

It was assigned 65 years ago, on Sun, Jan 1, 1961