PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SMB157221Gear,bevel

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 3020-00-511-4445 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-511-4445 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-511-4445. Primary manufacturer part number: SMB157221.
Features
  • Gear,bevel — FSC 3020
  • Tooth Direction: LEFTLEFT
  • Face Nominal Width: 0.159 INCHES0.159 INCHES IN
  • Pitch Diameter: 0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN
  • Nominal Outside Diameter: 0.7970 INCHES0.7970 INCHES IN
  • Mounting Hole Type and Quantity: 2 THREADED TRANSVERSELY THROUGH HUB FIRST END2 THREADED TRANSVERSELY THROUGH HUB FIRST END
  • Body Style: PLAIN, SOLIDPLAIN, SOLID
  • Surface Treatment Document and Classification: MIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
General Description

The Gear,bevel, cataloged under National Stock Number 3020-00-511-4445, is classified within Federal Supply Class 3020 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir. Government technical data includes 14 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 3 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3020-00-511-4445
Primary Part NumberSMB157221
Item NameGear,bevel
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusACTIVE
Tooth DirectionLEFTLEFT
Face Nominal Width0.159 INCHES0.159 INCHES IN
Pitch Diameter0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN
Nominal Outside Diameter0.7970 INCHES0.7970 INCHES IN
Mounting Hole Type and Quantity2 THREADED TRANSVERSELY THROUGH HUB FIRST END2 THREADED TRANSVERSELY THROUGH HUB FIRST END
Body StylePLAIN, SOLIDPLAIN, SOLID
Surface Treatment Document and ClassificationMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALLMIL-F-14072,FINISH E300 MIL SPEC SINGLE TREATMENT RESPONSE OVERALL
Nominal Distance Between Body Face and Protruding Hub End0.312 INCHES SECOND END0.312 INCHES SECOND END IN
Teeth TypeSPIRALSPIRAL
Attachment MethodMOUNTING HOLEMOUNTING HOLE
Nominal Overall Length0.562 INCHES0.562 INCHES IN
Style DesignatorPERIPHERAL FACE, BACK HUB PROTRUDINGPERIPHERAL FACE, BACK HUB PROTRUDING
Hub Nominal Diameter0.562 INCHES SECOND END0.562 INCHES SECOND END IN
Surface TreatmentPASSIVATE OVERALLPASSIVATE OVERALL
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5940-00-280-980719215-0034 INTERCHANGEABLE
Splice,conductor
Molex-Etc Inc Sub of Molex Inc
6740-00-412-525652-522 INTERCHANGEABLE
Cover,motor Box
Pakon Inc Dba Impak Division
6220-01-242-820280335R INTERCHANGEABLE
Stop Light-Taillight,vehicular
Truck-Lite Co., Llc
6240-01-459-2117MS175/C/BU/MED/3K INTERCHANGEABLE
Lamp,metal Halide
Venture Lighting International, Inc. Dba Venture Lighting Intl
Cross-Reference Index
Part NumberManufacturer
SMB157221-2 Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
SMB157221 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
52522 Kleinschmidt Inc (USA)
Related Parts
5940-00-280-9807INTERCHANGEABLE
SPLICE,CONDUCTOR
19215-0034
6740-00-412-5256INTERCHANGEABLE
COVER,MOTOR BOX
52-522
6220-01-242-8202INTERCHANGEABLE
STOP LIGHT-TAILLIGHT,VEHICULAR
80335R
6240-01-459-2117INTERCHANGEABLE
LAMP,METAL HALIDE
MS175/C/BU/MED/3K

Frequently Asked Questions

What is NSN 3020-00-511-4445?

NSN 3020-00-511-4445 is a Gear,bevel, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 3020 (No Item Name Available). Status: active.

What are the part numbers for NSN 3020-00-511-4445?

NSN 3020-00-511-4445 has 3 cross-referenced part numbers: SMB157221-2 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), SMB157221 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 52522 (Kleinschmidt Inc).

What NSN replaces 3020-00-511-4445?

There are 4 known substitutes for 3020-00-511-4445: 5940-00-280-9807, 6740-00-412-5256, 6220-01-242-8202 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SMB157221?

Key specifications for SMB157221: Tooth Direction: LEFTLEFT; Face Nominal Width: 0.159 INCHES0.159 INCHES IN; Pitch Diameter: 0.7500 INCHES NOMINAL0.7500 INCHES NOMINAL IN; Nominal Outside Diameter: 0.7970 INCHES0.7970 INCHES IN. 14 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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