NSN 5306-00-631-2950, 5306006312950
BOLT,FRONT CRANKCASE

Federal Supply Classification: FSC 5306 - Bolts
National Item Identification Number: NIIN 006312950
Codification Country: United States
Item Name Code: INC 77777
Criticality: (X) This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application.
Hazardous Material Indicator Code: (N) There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials.

Availability: Readily Available Qualified Suppliers: Currently qualifying suppliers

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DLMS^® Summary

National Stock Number 5306-00-631-2950

National Stock Number (NSN) 5306-00-631-2950, or NIIN 006312950, (bolt,front crankcase) was assigned January 1, 1963 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There is only one manufacturer part number associated with this NSN. One of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 2 suppliers. Today, 2 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, only one supplier is deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over 5 years.

This NSN is assigned to Item Name Code (INC) 77777. This item does not have a nuclear hardened feature or any other critical feature such as tolerance, fit restriction or application. There is no data in the HMIRS and the NSN is in an FSC not generally suspected of containing hazardous materials. NSN 5306006312950 contains an unknown precious metal.

This information was last updated on Jul 01, 2025.

Technical Characteristics

END ITEM IDENTIFICATION: (AGAV) ACFT ENG,RECIPROCATING
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) MATL STEEL PER AMS 6322; HARDNESS PER ROCKWELL C26 MIN AND C32 MAX; 12.881 IN. LONG; FIRST END THREADED 0.5-20-NF-3A FOR 0.781 IN.; OD VARIABLE 0.430 IN. MIN AND 0.435 IN. MAX,0.5090 IN. MIN AND 0.5095 IN. MAX,0.502 IN. MIN AND 0.506 IN. MAX; FLANGE 0.99 IN. MIN AND 1.01 IN. MAX BY 0.74 IN. MIN AND 0.76 IN. MAX