PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A8641Gear,bevel

Gear Specialties Inc · NSN 3020-00-517-4252 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-517-4252 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-517-4252. Primary manufacturer part number: A8641.
Features
  • Gear,bevel — FSC 3020
  • Tooth Direction: RIGHT
  • Nominal Distance Between Body Face and Protruding Hub End: 0.312 INCHES SECOND END IN
  • Style Designator: PERIPHERAL FACE, BACK HUB PROTRUDING
  • Pitch Angle: 45.0000 DEGREES
  • Material Document and Classification: FED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
  • Hub Style Designator: PINNED SECOND END
  • Body Style: PLAIN, SOLID
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Steel Comp 303 Overall construction
General Description

The Gear,bevel, cataloged under National Stock Number 3020-00-517-4252, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Gear Specialties Inc. 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. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-517-4252
Primary Part NumberA8641
Item NameGear,bevel
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerGear Specialties Inc
StatusACTIVE
Tooth DirectionRIGHT
Nominal Distance Between Body Face and Protruding Hub End0.312 INCHES SECOND END IN
Style DesignatorPERIPHERAL FACE, BACK HUB PROTRUDING
Pitch Angle45.0000 DEGREES
Material Document and ClassificationFED STD 66 FED STD SINGLE MATERIAL RESPONSE OVERALL
Hub Style DesignatorPINNED SECOND END
Body StylePLAIN, SOLID
Bore StylePLAIN BOTH ENDS
Teeth Quantity18
Pressure Angle20.0000 DEGREES
Face Nominal Width0.156 INCHES IN
Pitch Diameter0.7500 INCHES NOMINAL IN
Hub Nominal Diameter0.500 INCHES SECOND END IN
Teeth TypeSPIRAL
MaterialSTEEL COMP 303 OVERALL
Bore Nominal Diameter0.250 INCHES BOTH ENDS IN
Nominal Overall Length0.495 INCHES IN
Nominal Outside Diameter0.7970 INCHES IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 1
3110-00-151-9153 INTERCHANGEABLE
Ball,bearing
Cross-Reference Index
Part NumberManufacturer
A8641 Gear Specialties Inc (USA)
Related Parts
3110-00-151-9153INTERCHANGEABLE
BALL,BEARING

Frequently Asked Questions

What is NSN 3020-00-517-4252?

NSN 3020-00-517-4252 is a Gear,bevel, manufactured by Gear Specialties Inc, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-517-4252?

NSN 3020-00-517-4252 has 1 cross-referenced part number: A8641 (Gear Specialties Inc).

What NSN replaces 3020-00-517-4252?

There is 1 known substitute for 3020-00-517-4252: 3110-00-151-9153. Verify interchangeability with system specifications before substitution.

What are the specifications of A8641?

Key specifications for A8641: Tooth Direction: RIGHT; Nominal Distance Between Body Face and Protruding Hub End: 0.312 INCHES SECOND END IN; Style Designator: PERIPHERAL FACE, BACK HUB PROTRUDING; Pitch Angle: 45.0000 DEGREES. 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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