PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

25112Gear,spur

Allied Systems Company Dba Allied Systems Co · NSN 3020-01-176-8817 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-01-176-8817 — this item is cataloged by the U.S. Government under National Stock Number 3020-01-176-8817. Primary manufacturer part number: 25112.
Features
  • Gear,spur — FSC 3020
  • Style Designator: HUBLESS
  • Teeth Quantity: 12
  • Face Nominal Width: 4.000 INCHES IN
  • Pressure Angle: 20.0000 DEGREES
  • Nominal Outside Diameter: 4.533 INCHES IN
  • Material: STEEL OVERALL
  • Bore Nominal Diameter: 4.533 INCHES BOTH ENDS IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-01-176-8817, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Allied Systems Company Dba Allied Systems Co. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-01-176-8817
Primary Part Number25112
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerAllied Systems Company Dba Allied Systems Co
StatusACTIVE
Style DesignatorHUBLESS
Teeth Quantity12
Face Nominal Width4.000 INCHES IN
Pressure Angle20.0000 DEGREES
Nominal Outside Diameter4.533 INCHES IN
MaterialSTEEL OVERALL
Bore Nominal Diameter4.533 INCHES BOTH ENDS IN
Tooth FormSTANDARD
Body StylePLAIN, SOLID
Bore StyleSTRAIGHT SPLINE BOTH ENDS
Spline Quantity23 BOTH ENDS
Pitch Diameter4.0000 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
5310-00-176-813825112 INTERCHANGEABLE
Nut,plain,hexagon
Hamilton Sundstrand Corporation
5133-00-228-1327 INTERCHANGEABLE
Drill,twist
5935-00-259-254510049259 INTERCHANGEABLE
Plug,tip
Us Army Aviation and Missile Command
5330-00-367-73045150890A INTERCHANGEABLE
Gasket
Rolls-Royce Solutions America Inc
5133-00-865-4223 INTERCHANGEABLE
Bit,spade,wood Boring
3530-00-892-46312491D300A INTERCHANGEABLE
Sewing Machine,industrial
Singer Industrial Sewing Products Co Cutters Exchange Div
4720-01-038-7764 INTERCHANGEABLE
Hose,preformed
4720-01-059-962725112 INTERCHANGEABLE
Hose Assembly,nonmetallic
Bishop Freeman Co
6740-01-071-9195 INTERCHANGEABLE
Floodlight System,b
4730-01-429-1345129072 INTERCHANGEABLE
Strainer,suction
Circor Pumps North America Llc
Cross-Reference Index
Part NumberManufacturer
25112 PRIMARY Allied Systems Company Dba Allied Systems Co (USA)
Related Parts
5310-00-176-8138INTERCHANGEABLE
NUT,PLAIN,HEXAGON
25112
5133-00-228-1327INTERCHANGEABLE
DRILL,TWIST
5935-00-259-2545INTERCHANGEABLE
PLUG,TIP
10049259
5330-00-367-7304INTERCHANGEABLE
GASKET
5150890A
5133-00-865-4223INTERCHANGEABLE
BIT,SPADE,WOOD BORING
3530-00-892-4631INTERCHANGEABLE
SEWING MACHINE,INDUSTRIAL
2491D300A
4720-01-038-7764INTERCHANGEABLE
HOSE,PREFORMED
4720-01-059-9627INTERCHANGEABLE
HOSE ASSEMBLY,NONMETALLIC
25112
6740-01-071-9195INTERCHANGEABLE
FLOODLIGHT SYSTEM,B
4730-01-429-1345INTERCHANGEABLE
STRAINER,SUCTION
129072
5365-01-495-5485INTERCHANGEABLE
SHIM
3088A361
5120-01-580-9555INTERCHANGEABLE
WRENCH,BOX AND OPEN END,COMBINAT

Frequently Asked Questions

What is NSN 3020-01-176-8817?

NSN 3020-01-176-8817 is a Gear,spur, manufactured by Allied Systems Company Dba Allied Systems Co, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-01-176-8817?

NSN 3020-01-176-8817 has 1 cross-referenced part number: 25112 (Allied Systems Company Dba Allied Systems Co).

What NSN replaces 3020-01-176-8817?

There are 12 known substitutes for 3020-01-176-8817: 5310-00-176-8138, 5133-00-228-1327, 5935-00-259-2545 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 25112?

Key specifications for 25112: Style Designator: HUBLESS; End Item Identification: SINGLE POINT DAVIT SWING SYSTEM ABOARD 210 FT WMEC AND VARIOUS OTHER COAST GUARD VESSELS FT; Teeth Quantity: 12; Face Nominal Width: 4.000 INCHES IN. 13 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com