NSN 3040-00-017-8674, 3040000178674
GEARSHAFT,HELICAL

Federal Supply Classification: FSC 3040 - Miscellaneous Power Transmission Equipment
National Item Identification Number: NIIN 000178674
Codification Country: United States
Item Name Code: INC 60539
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: We have 1 qualified suppliers

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

Let Us Know

CALL ABOUT NSN 3040-00-017-8674

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

+1-321-773-5710

REQUEST QUOTE for 3040-00-017-8674

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

Upload a List

DLMS^® Summary

National Stock Number 3040-00-017-8674

National Stock Number (NSN) 3040-00-017-8674, or NIIN 000178674, (gearshaft,helical) was assigned January 1, 1961 in the Federal Logistics Information System (FLIS). This NIIN is Available for Manual Assignment. This NSN does not replace any other NSNs.

There are 3 manufacturer part numbers associated with this NSN. 3 of those part number(s) are considered obsolete. The manufacturer part numbers were originally supplied by 5 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.

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

Based on a planned procurement review by the Primary Inventory Control Activity (PICA) on Jul 02, 2005, this NSN's acquisition method was noted as: Suitable for Competitive Acquisition. (Potential sources shall include dealers/distributors.) The Government has unlimited rights to the technical data, and the data package is complete. Valid AMCs: 1 and 2.

This NSN is assigned to Item Name Code (INC) 60539. [A GEARSHAFT WITH A SINGLE COMPLEMENT OF HELICAL GEAR TEETH. FOR ITEMS WITH MORE THAN ONE COMPLEMENT OF TEETH, SEE GEARSHAFT (1), MULTIPLE GEARS.]. 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 3040000178674 does not contain precious metals.

This NSN is associated to Schedule B 8483105000: transmission shafts and cranks, except camshafts and crankshafts. The Schedule B End Use is listed as industrial machines, other. NAICS classification category 333613: mechanical power transmission equipment manufacturing.

This information was last updated on May 01, 2025.

Technical Characteristics

SPECIAL FEATURES: (FEAT) USTEEL;NO OF TEETH 27;NORMAL DIAMETRAL PITCH 12;NORMAL PRESSURE ANGLE 20 DEG;PITCH DIA 2.4354 IN.;NORMAL CIRC PITCH (REF).2618 IN.;WHOLE DEPTH .200 IN.;HELIX ANGLE 22.5 DEG;HELIX LEAD (RH) 18.4684 IN.;ADDENDUM .0833 IN.;NORMAL CHORDAL THKNS .13082 IN.;ROOT DIA (REF) 2.202 IN.;BASE CIR DIA (REF) 2.2659 IN.;PERMISSIBLE BACKLASH .002 IN. TO .004 IN. WHEN MESHING WITH MASTER GEAR WHICH IS TO STANDARD SIZE AND AT STANDARD CENTER DISTANCE OF 2.435 IN. OR 3.653 IN.;HEAT TREAT TO RC 27-34
SPECIAL FEATURES: (FEAT) STEEL;NO OF TEETH 27;NORMAL DIAMETRAL PITCH 12;NORMAL PRESSURE ANGLE 20 DEG;PITCH DIA 2.4354 IN.;NORMAL CIRC PITCH (REF).2618 IN.;WHOLE DEPTH .200 IN.;HELIX ANGLE 22.5 DEG;HELIX LEAD (RH) 18.4684 IN.;ADDENDUM .0833 IN.;NORMAL CHORDAL THKNS .13082 IN.;ROOT DIA (REF) 2.202 IN.;BASE CIR DIA (REF) 2.2659 IN.;PERMISSIBLE BACKLASH .002 IN. TO .004 IN. WHEN MESHING WITH MASTER GEAR WHICH IS TO STANDARD SIZE AND AT STANDARD CENTER DISTANCE OF 2.435 IN. OR 3.653 IN.;HEAT TREAT TO RC 27-34