PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

FA42ATappet,engine Poppet Valve

Wisconsin Motors, Llc · NSN 2805-00-358-2939 · FSC 2805 · No Item Name Available
Verified by PartsTable
NSN 2805-00-358-2939 — this item is cataloged by the U.S. Government under National Stock Number 2805-00-358-2939. Primary manufacturer part number: FA42A.
Features
  • Tappet,engine Poppet Valve — FSC 2805
  • Cam End Diameter: 0.802 INCHES NOMINAL IN
  • Adjustability: NONADJUSTABLE
  • Material: STEEL COMP 1020 OVERALL
  • Material Document and Classification: SAE 1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
  • Metallic Hardness Rating and Location: 70.0 SHORE SCLEROSCOPE MINIMUM OVERALL AND 80.0 SHORE SCLEROSCOPE MAXIMUM OVERALL
  • Operation Method: MECHANICAL
  • Cam End Height: 0.095 INCHES NOMINAL IN
Applications
  • Flow control in piping systems
  • Pressure regulation
  • Steam and fluid isolation
  • Mechanical power generation
  • Drive system operation
General Description

The Tappet,engine Poppet Valve, cataloged under National Stock Number 2805-00-358-2939, is classified within Federal Supply Class 2805 (No Item Name Available) of the Engines, Turbines, and Components group. The primary manufacturer of record is Wisconsin Motors, Llc. Government technical data includes 12 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 9 commercial cross-references from 8 manufacturers, enabling identification through both NSN and commercial part number lookups. 9 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Cancelled.

Technical Specifications
ParameterValue
NSN2805-00-358-2939
Primary Part NumberFA42A
Item NameTappet,engine Poppet Valve
FSC / FSG2805 / 28 — No Item Name Available
ManufacturerWisconsin Motors, Llc
StatusCANCELLED
Cam End Diameter0.802 INCHES NOMINAL IN
AdjustabilityNONADJUSTABLE
MaterialSTEEL COMP 1020 OVERALL
Material Document and ClassificationSAE 1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
Metallic Hardness Rating and Location70.0 SHORE SCLEROSCOPE MINIMUM OVERALL AND 80.0 SHORE SCLEROSCOPE MAXIMUM OVERALL
Operation MethodMECHANICAL
Cam End Height0.095 INCHES NOMINAL IN
Style DesignatorTWO PIECE, CUPPED PUSH ROD END
Casehardened LocationOVERALL
Body Outside Diameter0.309 INCHES MINIMUM AND 0.310 INCHES MAXIMUM IN
Size DesignationSTANDARD
Casehardening IndicatorCASEHARDENED
Lifecycle & Compliance
Acquisition StatusCANCELLED
HAZMATNo
Verified Substitutes 9
1220-00-275-8975 INTERCHANGEABLE
Computer
2990-00-309-9574S21015 INTERCHANGEABLE
Cap Assembly,protective,muffler-
H20 Tank Inc U S Motors Div
3030-00-528-4752 INTERCHANGEABLE
Belt,v
5325-00-576-55484219 INTERCHANGEABLE
Grommet,nonmetallic
Kirkhill, Inc. Dba Kirkhill Inc
4730-00-720-1868 INTERCHANGEABLE
Coupling Half,quick Disconnect
5910-00-806-28093M151-605A INTERCHANGEABLE
Capacitor,fixed,paper Dielectric
Bycap Inc
9540-01-231-7654NAS342-26-7075-0 INTERCHANGEABLE
Angle,structural
National Aerospace Standards Committee Aerospace Industries Association of America Inc Not for Rfq or Solicitation Use
4720-01-244-35804219-0102 INTERCHANGEABLE
Hose,nonmetallic
Gates Corporation
4320-01-376-67794219 INTERCHANGEABLE
Ring,wearing
Minnesota Rubber Co
Cross-Reference Index
Part NumberManufacturer
WPP56 Siemens Water Technologies Corp. Div Wallace & Tiernan Products (USA)
MFA42A Met-Pro Corporation (USA)
4219 L & L Boiler Maintenance Inc (USA)
609026 Aqua-Chem, Inc. Dba Aqua-Chem Inc (USA)
FA42A PRIMARY Wisconsin Motors, Llc (USA)
FA42 PRIMARY Wisconsin Motors, Llc (USA)
W37-33 Stanadyne/chicago Div (USA)
4219 D & J Parts Inc (USA)
609026 Aqua-Chem Inc Cleaver-Brooks Div (USA)
Related Parts
1220-00-275-8975INTERCHANGEABLE
COMPUTER
2990-00-309-9574INTERCHANGEABLE
CAP ASSEMBLY,PROTECTIVE,MUFFLER-
S21015
3030-00-528-4752INTERCHANGEABLE
BELT,V
5325-00-576-5548INTERCHANGEABLE
GROMMET,NONMETALLIC
4219
4730-00-720-1868INTERCHANGEABLE
COUPLING HALF,QUICK DISCONNECT
5910-00-806-2809INTERCHANGEABLE
CAPACITOR,FIXED,PAPER DIELECTRIC
3M151-605A
9540-01-231-7654INTERCHANGEABLE
ANGLE,STRUCTURAL
NAS342-26-7075-0
4720-01-244-3580INTERCHANGEABLE
HOSE,NONMETALLIC
4219-0102
4320-01-376-6779INTERCHANGEABLE
RING,WEARING
4219

Frequently Asked Questions

What is NSN 2805-00-358-2939?

NSN 2805-00-358-2939 is a Tappet,engine Poppet Valve, manufactured by Wisconsin Motors, Llc, classified under FSC 2805 (No Item Name Available). Status: cancelled.

What are the part numbers for NSN 2805-00-358-2939?

NSN 2805-00-358-2939 has 9 cross-referenced part numbers: WPP56 (Siemens Water Technologies Corp. Div Wallace & Tiernan Products), MFA42A (Met-Pro Corporation), 4219 (L & L Boiler Maintenance Inc), 609026 (Aqua-Chem, Inc. Dba Aqua-Chem Inc), FA42A (Wisconsin Motors, Llc) and 4 more.

What NSN replaces 2805-00-358-2939?

There are 9 known substitutes for 2805-00-358-2939: 1220-00-275-8975, 2990-00-309-9574, 3030-00-528-4752 and 6 more. Verify interchangeability with system specifications before substitution.

What are the specifications of FA42A?

Key specifications for FA42A: Cam End Diameter: 0.802 INCHES NOMINAL IN; Adjustability: NONADJUSTABLE; Material: STEEL COMP 1020 OVERALL; Material Document and Classification: SAE 1020 ASSN STD SINGLE MATERIAL RESPONSE OVERALL. 13 total characteristics are documented in the Federal Logistics Information System.

Is NSN 2805-00-358-2939 still in active supply?

NSN 2805-00-358-2939 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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