PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12979Bell Crank

Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems · NSN 3040-00-335-9301 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-335-9301 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-335-9301. Primary manufacturer part number: 12979.
Features
  • Bell Crank — FSC 3040
  • Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 0.438 INCHES NOMINAL FIRST END IN
  • End Hole/ball Diameter: 0.188 INCHES NOMINAL FIRST END IN
  • Material: STEEL
  • End Hole/ball Diameter: 0.268 INCHES NOMINAL SECOND END IN
  • Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 2.188 INCHES NOMINAL SECOND END IN
  • Bore Length: 0.082 INCHES NOMINAL IN
  • Bore Diameter: 0.195 INCHES NOMINAL IN
Applications
  • Applications requiring Steel construction
General Description

The Bell Crank, cataloged under National Stock Number 3040-00-335-9301, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems. Government technical data includes 7 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. 12 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-335-9301
Primary Part Number12979
Item NameBell Crank
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerStanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
StatusACTIVE
Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball0.438 INCHES NOMINAL FIRST END IN
End Hole/ball Diameter0.188 INCHES NOMINAL FIRST END IN
MaterialSTEEL
End Hole/ball Diameter0.268 INCHES NOMINAL SECOND END IN
Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball2.188 INCHES NOMINAL SECOND END IN
Bore Length0.082 INCHES NOMINAL IN
Bore Diameter0.195 INCHES NOMINAL IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
4720-00-079-6010100019 INTERCHANGEABLE
Hose Assembly,metallic
Hyspan Precision Products, Inc.
5210-00-097-7293SMB586521 INTERCHANGEABLE
Level,tubular Moun
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
2825-00-146-805341016 INTERCHANGEABLE
Block
Northrop Grumman Systems Corporation Div Marine Systems
6685-00-330-92801470 INTERCHANGEABLE
Manometer,vertical Tube
Princo Instruments, Inc
2520-00-390-897654528HA INTERCHANGEABLE
Retainer,roller Bea
Navistar Intl Corp Truck Br Ohio Plant
4930-00-533-30603310-010 INTERCHANGEABLE
Lubricating Gun,handheld
Balcrank Products Inc
5950-00-645-4464SC-C-84598 INTERCHANGEABLE
Transformer,audio Frequency
Us Army Communications & Electronics Materiel Readiness Command Logistics Engineering Dir
4935-00-841-643412979 INTERCHANGEABLE
Board Assembly
Emcore Corporation Div Concord Division
5330-00-889-5930 INTERCHANGEABLE
Seal,compressor
6220-01-052-345116VE083001-5 INTERCHANGEABLE
Light,navigational,aircraft
Lockheed Martin Corporation Div Lockheed Martin Aeronautics Company
Cross-Reference Index
Part NumberManufacturer
41008 Napco International Llc Dba Napco International Inc (USA)
12979 PRIMARY Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
7007 Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc (USA)
1319-1 Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems (USA)
Related Parts
4720-00-079-6010INTERCHANGEABLE
HOSE ASSEMBLY,METALLIC
100019
5210-00-097-7293INTERCHANGEABLE
LEVEL,TUBULAR MOUN
SMB586521
2825-00-146-8053INTERCHANGEABLE
BLOCK
41016
6685-00-330-9280INTERCHANGEABLE
MANOMETER,VERTICAL TUBE
1470
2520-00-390-8976INTERCHANGEABLE
RETAINER,ROLLER BEA
54528HA
4930-00-533-3060INTERCHANGEABLE
LUBRICATING GUN,HANDHELD
3310-010
5950-00-645-4464INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
SC-C-84598
4935-00-841-6434INTERCHANGEABLE
BOARD ASSEMBLY
12979
5330-00-889-5930INTERCHANGEABLE
SEAL,COMPRESSOR
6220-01-052-3451INTERCHANGEABLE
LIGHT,NAVIGATIONAL,AIRCRAFT
16VE083001-5
3040-01-071-2001INTERCHANGEABLE
BRAKE,ARMATURE
3510-01-102-9631INTERCHANGEABLE
SHOE,IRON
41008

Frequently Asked Questions

What is NSN 3040-00-335-9301?

NSN 3040-00-335-9301 is a Bell Crank, manufactured by Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-335-9301?

NSN 3040-00-335-9301 has 4 cross-referenced part numbers: 41008 (Napco International Llc Dba Napco International Inc), 12979 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems), 7007 (Drs Naval Power Systems Inc Dba Drs Power & Control Technologies Inc), 1319-1 (Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems).

What NSN replaces 3040-00-335-9301?

There are 12 known substitutes for 3040-00-335-9301: 4720-00-079-6010, 5210-00-097-7293, 2825-00-146-8053 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12979?

Key specifications for 12979: Center to Center Distance Between Fulcrum and Arm End Hole/slot/ball: 0.438 INCHES NOMINAL FIRST END IN; End Hole/ball Diameter: 0.188 INCHES NOMINAL FIRST END IN; Material: STEEL; End Hole/ball Diameter: 0.268 INCHES NOMINAL SECOND END IN. 8 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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