PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12597Gear,spur

Grimes Aerospace Company · NSN 3020-00-894-7593 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-894-7593 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-894-7593. Primary manufacturer part number: 12597.
Features
  • Gear,spur — FSC 3020
  • Bore Style: PLAIN BOTH ENDS
  • Nominal Outside Diameter: 1.1132 INCHES IN
  • Body Style: PLAIN, SOLID
  • Teeth Quantity: 68
  • Nominal Distance Between Body Face and Protruding Hub End: 0.094 INCHES FIRST END IN
  • Hub Style Designator: 1 STEP FIRST END
  • Pitch Diameter: 1.0822 INCHES NOMINAL IN
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Copper Alloy 360 Overall construction
General Description

The Gear,spur, cataloged under National Stock Number 3020-00-894-7593, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Grimes Aerospace Company. Government technical data includes 18 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. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-894-7593
Primary Part Number12597
Item NameGear,spur
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerGrimes Aerospace Company
StatusACTIVE
Bore StylePLAIN BOTH ENDS
Nominal Outside Diameter1.1132 INCHES IN
Body StylePLAIN, SOLID
Teeth Quantity68
Nominal Distance Between Body Face and Protruding Hub End0.094 INCHES FIRST END IN
Hub Style Designator1 STEP FIRST END
Pitch Diameter1.0822 INCHES NOMINAL IN
MaterialCOPPER ALLOY 360 OVERALL
First Step Nominal Diameter0.500 INCHES FIRST END IN
Bore Nominal Diameter0.188 INCHES BOTH ENDS IN
Face Nominal Width0.062 INCHES IN
Style DesignatorPROTRUDING HUB
End Nominal Diameter0.250 INCHES FIRST END IN
Material Document and ClassificationQQ-B-626,COMP 22 FED SPEC SINGLE MATERIAL RESPONSE OVERALL
End Nominal Length0.031 INCHES FIRST END IN
Pressure Angle20.0000 DEGREES
Tooth FormSPECIAL
First Step Nominal Length0.063 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 9
4320-00-035-6899125-97 INTERCHANGEABLE
Seal Assembly,shaft,spring Loade
Dresser Industries Inc Leroi Div
4820-00-036-098912597 INTERCHANGEABLE
Seat,valve
Schneider Electric Systems Usa Inc
3040-00-147-2026312597 INTERCHANGEABLE
Lever,remote Control
Brp Us Inc
4820-00-845-1096 INTERCHANGEABLE
Cock,drain
5950-00-853-275512597 INTERCHANGEABLE
Reactor
Robert M. Hadley Company, Inc.
3020-01-128-423612597 INTERCHANGEABLE
Gear,helical
Westerbeke Corporation
3455-01-336-166612597 INTERCHANGEABLE
Blade,band Saw,metal Cutting
L.s. Starrett Company (the) Div Tool Division
7045-01-367-0387 INTERCHANGEABLE
Disk,flexible
6550-01-575-105688753 INTERCHANGEABLE
Control,blood Chemistry
Quidel Corp
Cross-Reference Index
Part NumberManufacturer
12597 PRIMARY Grimes Aerospace Company (USA)
Related Parts
4320-00-035-6899INTERCHANGEABLE
SEAL ASSEMBLY,SHAFT,SPRING LOADE
125-97
4820-00-036-0989INTERCHANGEABLE
SEAT,VALVE
12597
3040-00-147-2026INTERCHANGEABLE
LEVER,REMOTE CONTROL
312597
4820-00-845-1096INTERCHANGEABLE
COCK,DRAIN
5950-00-853-2755INTERCHANGEABLE
REACTOR
12597
3020-01-128-4236INTERCHANGEABLE
GEAR,HELICAL
12597
3455-01-336-1666INTERCHANGEABLE
BLADE,BAND SAW,METAL CUTTING
12597
7045-01-367-0387INTERCHANGEABLE
DISK,FLEXIBLE
6550-01-575-1056INTERCHANGEABLE
CONTROL,BLOOD CHEMISTRY
88753

Frequently Asked Questions

What is NSN 3020-00-894-7593?

NSN 3020-00-894-7593 is a Gear,spur, manufactured by Grimes Aerospace Company, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-894-7593?

NSN 3020-00-894-7593 has 1 cross-referenced part number: 12597 (Grimes Aerospace Company).

What NSN replaces 3020-00-894-7593?

There are 9 known substitutes for 3020-00-894-7593: 4320-00-035-6899, 4820-00-036-0989, 3040-00-147-2026 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12597?

Key specifications for 12597: Bore Style: PLAIN BOTH ENDS; Nominal Outside Diameter: 1.1132 INCHES IN; Body Style: PLAIN, SOLID; Teeth Quantity: 68. 18 total characteristics are documented in the Federal Logistics Information System.

Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
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