PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

SCB77453Gear,helical

Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir · NSN 3020-00-251-0952 · FSC 3020 · No Item Name Available
Verified by PartsTable
NSN 3020-00-251-0952 — this item is cataloged by the U.S. Government under National Stock Number 3020-00-251-0952. Primary manufacturer part number: SCB77453.
Features
  • Gear,helical — FSC 3020
  • Attachment Method: MOUNTING HOLE
  • Teeth Quantity: 35
  • Material Document and Classification: MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
  • Mounting Hole Thread Quantity Per Inch: 36 TRANSVERSELY THROUGH HUB FIRST END
  • Tooth Direction: LEFT
  • Nominal Overall Length: 0.703 INCHES IN
  • Mounting Hole Type and Quantity: 2 THREADED TRANSVERSELY THROUGH HUB FIRST END
Applications
  • Power transmission and speed reduction
  • Rotary motion transfer
  • Torque multiplication
  • Applications requiring Plastic Phenolic and Cotton Overall construction
General Description

The Gear,helical, cataloged under National Stock Number 3020-00-251-0952, 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 19 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 4 commercial cross-references from 3 manufacturers, enabling identification through both NSN and commercial part number lookups. 10 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN3020-00-251-0952
Primary Part NumberSCB77453
Item NameGear,helical
FSC / FSG3020 / 30 — No Item Name Available
ManufacturerUs Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
StatusCANCELLED
Attachment MethodMOUNTING HOLE
Teeth Quantity35
Material Document and ClassificationMIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL
Mounting Hole Thread Quantity Per Inch36 TRANSVERSELY THROUGH HUB FIRST END
Tooth DirectionLEFT
Nominal Overall Length0.703 INCHES IN
Mounting Hole Type and Quantity2 THREADED TRANSVERSELY THROUGH HUB FIRST END
Helix Angle20.0000 DEGREES
Bore Nominal Diameter0.2500 INCHES BOTH ENDS IN
MaterialPLASTIC PHENOLIC AND COTTON OVERALL
Body StylePLAIN, SOLID
Pressure Angle14.5000 DEGREES
Teeth TypeSINGLE HELIX
Face Nominal Width0.297 INCHES IN
Tooth FormSTANDARD
Nominal Outside Diameter0.8180 INCHES IN
Style DesignatorPROTRUDING HUB
Pitch Diameter0.7760 INCHES NOMINAL IN
Hub Nominal Diameter0.500 INCHES FIRST END IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 10
2810-00-118-326911052 INTERCHANGEABLE
Disc,magneto Coupli
Pratt & Whitney Canada Corp Div Pratt & Whitney Canada Corp.
3110-00-144-86690210591 INTERCHANGEABLE
Bearing,ball,annular
Agco Corp Parts Opn
4820-00-268-91581105-318 INTERCHANGEABLE
Valve,gate
Milwaukee Valve Co, Inc Div Milwaukee Valve Company, Llc
2590-00-570-9519 INTERCHANGEABLE
Valve,lift
2530-00-870-4491533571C91 INTERCHANGEABLE
Evaporator,air Brake System
Dressta North America Ltd
5330-00-898-7076SY1060163 INTERCHANGEABLE
Gasket
Haywardindl. Products, Inc.
6610-00-991-118711052 INTERCHANGEABLE
Gear,case
Aerosonic Llc
3010-01-160-659011052 INTERCHANGEABLE
Coupling,shaft,rigid
DP Manufacturing Inc.
5340-01-344-031411052 INTERCHANGEABLE
Plunger,detent
Stanadyne Corporation Dba Stanadyne Diesel Systems
5120-01-701-303911052 INTERCHANGEABLE
Bit,screwdriver
Bondhus Corp
Cross-Reference Index
Part NumberManufacturer
061052 Bell and Howell Phillipsburg Co Corporate Offices (USA)
SCB77453 PRIMARY Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir (USA)
311-1280A Federal Div of Victoreen Instrument Co Inc (USA)
11052 Bell and Howell Phillipsburg Co Corporate Offices (USA)
Related Parts
2810-00-118-3269INTERCHANGEABLE
DISC,MAGNETO COUPLI
11052
3110-00-144-8669INTERCHANGEABLE
BEARING,BALL,ANNULAR
0210591
4820-00-268-9158INTERCHANGEABLE
VALVE,GATE
1105-318
2590-00-570-9519INTERCHANGEABLE
VALVE,LIFT
2530-00-870-4491INTERCHANGEABLE
EVAPORATOR,AIR BRAKE SYSTEM
533571C91
5330-00-898-7076INTERCHANGEABLE
GASKET
SY1060163
6610-00-991-1187INTERCHANGEABLE
GEAR,CASE
11052
3010-01-160-6590INTERCHANGEABLE
COUPLING,SHAFT,RIGID
11052
5340-01-344-0314INTERCHANGEABLE
PLUNGER,DETENT
11052
5120-01-701-3039INTERCHANGEABLE
BIT,SCREWDRIVER
11052

Frequently Asked Questions

What is NSN 3020-00-251-0952?

NSN 3020-00-251-0952 is a Gear,helical, manufactured by Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir, classified under FSC 3020 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 3020-00-251-0952?

NSN 3020-00-251-0952 has 4 cross-referenced part numbers: 061052 (Bell and Howell Phillipsburg Co Corporate Offices), SCB77453 (Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir), 311-1280A (Federal Div of Victoreen Instrument Co Inc), 11052 (Bell and Howell Phillipsburg Co Corporate Offices).

What NSN replaces 3020-00-251-0952?

There are 10 known substitutes for 3020-00-251-0952: 2810-00-118-3269, 3110-00-144-8669, 4820-00-268-9158 and 7 more. Verify interchangeability with system specifications before substitution.

What are the specifications of SCB77453?

Key specifications for SCB77453: Attachment Method: MOUNTING HOLE; Teeth Quantity: 35; Material Document and Classification: MIL-P-15035,TYPE FBI MIL SPEC SINGLE MATERIAL RESPONSE OVERALL; Mounting Hole Thread Quantity Per Inch: 36 TRANSVERSELY THROUGH HUB FIRST END. 19 total characteristics are documented in the Federal Logistics Information System.

Is NSN 3020-00-251-0952 still in active supply?

NSN 3020-00-251-0952 is currently cancelled. Check with the Defense Logistics Agency for current availability and authorized substitutes.

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