PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

B6255Shifter,governor

Dresser, Llc · NSN 2990-00-364-8978 · FSC 2990 · No Item Name Available
Verified by PartsTable
NSN 2990-00-364-8978 — this item is cataloged by the U.S. Government under National Stock Number 2990-00-364-8978. Primary manufacturer part number: B6255.
Features
  • Shifter,governor — FSC 2990
  • General Characteristics Item Description: CORNERS CHAMFERED 0.031 IN. BY 45 DEG;0.062 IN. UNDERCUT IN
  • 2 verified cross-references
  • Primary manufacturer: Dresser, Llc
Applications
  • Industrial maintenance and repair
  • Government and military logistics
  • Equipment overhaul and refurbishment
General Description

The Shifter,governor, cataloged under National Stock Number 2990-00-364-8978, is classified within Federal Supply Class 2990 (No Item Name Available) of the Engine Accessories group. The primary manufacturer of record is Dresser, Llc. Government technical data includes 1 verified specification, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 2 manufacturers, enabling identification through both NSN and commercial part number lookups. 1 verified substitute exists in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2990-00-364-8978
Primary Part NumberB6255
Item NameShifter,governor
FSC / FSG2990 / 29 — No Item Name Available
ManufacturerDresser, Llc
StatusCANCELLED
General Characteristics Item DescriptionCORNERS CHAMFERED 0.031 IN. BY 45 DEG;0.062 IN. UNDERCUT IN
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 1
3040-00-036-341030160 INTERCHANGEABLE
Shaft,turbine
Curtiss-Wright Electro-Mechanical Corp Dba Steam & Air Solutions Div Curtiss-Wright Steam and Air Solutions
Cross-Reference Index
Part NumberManufacturer
B6255 PRIMARY Dresser, Llc (USA)
1AB6255 Fwd Seagrave Holdings Lp (USA)
Related Parts
3040-00-036-3410INTERCHANGEABLE
SHAFT,TURBINE
30160

Frequently Asked Questions

What is NSN 2990-00-364-8978?

NSN 2990-00-364-8978 is a Shifter,governor, manufactured by Dresser, Llc, classified under FSC 2990 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2990-00-364-8978?

NSN 2990-00-364-8978 has 2 cross-referenced part numbers: B6255 (Dresser, Llc), 1AB6255 (Fwd Seagrave Holdings Lp).

What NSN replaces 2990-00-364-8978?

There is 1 known substitute for 2990-00-364-8978: 3040-00-036-3410. Verify interchangeability with system specifications before substitution.

What are the specifications of B6255?

Key specifications for B6255: General Characteristics Item Description: CORNERS CHAMFERED 0.031 IN. BY 45 DEG;0.062 IN. UNDERCUT IN. 1 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2990-00-364-8978 still in active supply?

NSN 2990-00-364-8978 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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