NSN 1615-00-886-5998, 1615008865998
CONTROL TUBE,TAIL ROTOR

Federal Supply Classification: FSC 1615 - Helicopter Rotor Blades, Drive Mechanisms and Components
National Item Identification Number: NIIN 008865998
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: We have 3 qualified suppliers

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DLMS^® Summary

National Stock Number 1615-00-886-5998

National Stock Number (NSN) 1615-00-886-5998, or NIIN 008865998, (control tube,tail rotor) was assigned January 1, 1962 in the Federal Logistics Information System (FLIS). This NSN does not replace any other NSNs.

There are 2 manufacturer part numbers associated with this NSN. None of the associated part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 3 suppliers. Today, 3 suppliers are listed as Active suppliers for this NSN. Of the active suppliers, 3 suppliers are deemed design controlled or valid supply parts. ISO Group has several sources of supply for this NSN.

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

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 Dec 03, 2013, 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 1615008865998 contains an unknown precious metal.

This NSN is associated to Schedule B 8803100060: propellers and rotors and parts thereof, for use in military aircraft. The Schedule B End Use is listed as parts for military-type goods. NAICS classification category 336413: other aircraft parts and auxiliary equipment manufacturing.

This information was last updated on Jul 01, 2025.

Technical Characteristics

GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) USTEEL MIL-T-6736 COMP 4130 TYPE 1COND N,CADMIUM-PLATED QQ-P-416 CLASS 2TYPE 1,DIM.,21.930 IN. MIN,21.970 IN. MAX LG,0.432 IN. MIN,0.442 IN. MAX OD,0.312-24 UNF CLASS 3A THREADS ON LEFT END OD BY 0.340 IN. LG,TWO THRU HOLES 90.0 DEG APART 0.077 IN. DIA LOCATED 0.175 IN. FROM END,0.562 IN. FLANGE ODBY 0.060 IN. THK LOCATED 1.000 IN. FROM LEFT END,0.625-6P DOUBLE THREAD 0.3333L NA-4G NON STD ON RIGHT END 1.250 IN. LG,0.5328 IN. MIN,0.5385 IN. MAX PITCH DIA,11.0 DEG 5 MIN HELIX ANGLE,FLANGE SPLINE DATA LOCATED 1.725 IN. FROM RIGHT END,22 TEETH 0.400 IN. LG,32/64 DIAMETRAL PITCH,30.0 DEG PRESSURE ANGLE CLASS A FIT,SIDES OF TEETH SLIDING,0.6875 IN. PITCH DIA,0.7158 IN. MIN,0.7188 IN. MAX MAJOR DIA,0.6379 IN. MIN,0.6460 IN. MAX MINOR DIA
GENERAL CHARACTERISTICS ITEM DESCRIPTION: (TEXT) STEEL MIL-T-6736 COMP 4130 TYPE 1COND N,CADMIUM-PLATED QQ-P-416 CLASS 2TYPE 1,DIM.,21.930 IN. MIN,21.970 IN. MAX LG,0.432 IN. MIN,0.442 IN. MAX OD,0.312-24 UNF CLASS 3A THREADS ON LEFT END OD BY 0.340 IN. LG,TWO THRU HOLES 90.0 DEG APART 0.077 IN. DIA LOCATED 0.175 IN. FROM END,0.562 IN. FLANGE ODBY 0.060 IN. THK LOCATED 1.000 IN. FROM LEFT END,0.625-6P DOUBLE THREAD 0.3333L NA-4G NON STD ON RIGHT END 1.250 IN. LG,0.5328 IN. MIN,0.5385 IN. MAX PITCH DIA,11.0 DEG 5 MIN HELIX ANGLE,FLANGE SPLINE DATA LOCATED 1.725 IN. FROM RIGHT END,22 TEETH 0.400 IN. LG,32/64 DIAMETRAL PITCH,30.0 DEG PRESSURE ANGLE CLASS A FIT,SIDES OF TEETH SLIDING,0.6875 IN. PITCH DIA,0.7158 IN. MIN,0.7188 IN. MAX MAJOR DIA,0.6379 IN. MIN,0.6460 IN. MAX MINOR DIA