NSN 1615-00-997-2511, 1615009972511
BOLT,PITCH HORN,MAIN ROTOR

Federal Supply Classification: FSC 1615 - Helicopter Rotor Blades, Drive Mechanisms and Components
National Item Identification Number: NIIN 009972511
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: Request Qualified Suppliers: Currently qualifying suppliers

Manufacture or supply this part?
Join our growing community of certified suppliers.

Let Us Know

CALL ABOUT NSN 1615-00-997-2511

Our client representatives are standing by to help fulfill your request.

+1-321-773-5710

REQUEST QUOTE for 1615-00-997-2511

Have a list that needs to be quoted? Upload it here.

Upload a List

DLMS^® Summary

National Stock Number 1615-00-997-2511

National Stock Number (NSN) 1615-00-997-2511, or NIIN 009972511, (bolt,pitch horn,main rotor) was assigned April 11, 1967 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 5 suppliers. Today, 4 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 4 suppliers are deemed design controlled or valid supply parts.

This part number has not been procured by the US Government in over a year. There have been 12 contracts issued for this part number, with 12 awards given. There is minimal competition for this NSN. The US Government has awarded contracts to 5 different suppliers. The last contract numbers awarded were: SPE4A721PD924, SPE4A720P8015, SPE4A719P7077, SPE4A719P3627, SPE4A719P1991. The total value of the awarded contracts has been US$ 44,113.54.

This NSN is somewhat common among different platforms, belonging to 2 different weapons systems.

There has been a small amount of demand for this national stock number. The demand for this NSN originated from less than 5 countries. Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Nov 28, 2012, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) This part requires engineering source approval by the design control activity in order to maintain the quality of the part. An alternate source must qualify in accordance with the design control activity's procedures, as approved by the cognizant Government engineering activity. Valid AMCs: 1, 2, 3, 4 and 5.

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 1615009972511 contains an unknown precious metal.

This information was last updated on Aug 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) STEEL,AMS 6414,COMP 4340,CADMIUM PLATED QQ-P-416,CLASS 2,TYPE 2,DIM.,4.010 IN. NOM O/A LG,1.870 IN. NOM GRIP LG,0.476 IN. NOM GRIP OD,0.500-20UNF-3A EXTERNAL THD SIZE BY 0.835 THD LG,BEGINNING 0.180 IN. FROM END,0.625 IN. NOM LG RAISED TAPER FROM GRIP END TO OD GROOVE W/7.5 DEG HIGH TAPER AT GRIP END TO 0.515 IN. MIN,0.520 IN. MAX DIA AT OD GROOVE,0.350 IN. NOM ENDOD,0.180 IN. NOM END LG,0.250 IN. NOM HEXAGON HEAD W,0.741 IN. MIN,0.752 IN.MAX DISTANCE ACROSS HEX FLATS
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) QSTEEL,AMS 6414,COMP 4340,CADMIUM PLATED QQ-P-416,CLASS 2,TYPE 2,DIM.,4.010 IN. NOM O/A LG,1.870 IN. NOM GRIP LG,0.476 IN. NOM GRIP OD,0.500-20UNF-3A EXTERNAL THD SIZE BY 0.835 THD LG,BEGINNING 0.180 IN. FROM END,0.625 IN. NOM LG RAISED TAPER FROM GRIP END TO OD GROOVE W/7.5 DEG HIGH TAPER AT GRIP END TO 0.515 IN. MIN,0.520 IN. MAX DIA AT OD GROOVE,0.350 IN. NOM ENDOD,0.180 IN. NOM END LG,0.250 IN. NOM HEXAGON HEAD W,0.741 IN. MIN,0.752 IN.MAX DISTANCE ACROSS HEX FLATS