PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

1668Shaft,straight

New Haven Mfg Corp · NSN 3040-00-975-9786 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-975-9786 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-975-9786. Primary manufacturer part number: 1668.
Features
  • Shaft,straight — FSC 3040
  • Second End Style: SLOTTED
  • Second End Slot Depth: 0.250 INCHES NOMINAL IN
  • Second End Slot Width: 0.104 INCHES NOMINAL IN
  • Second End Diameter: 0.1875 INCHES NOMINAL IN
  • Material: STEEL CORROSION RESISTING
  • End Similarity: NOT IDENTICAL
  • Material Document and Classification: QQ-S-763,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE
Applications
  • Applications requiring Steel Corrosion Resisting construction
General Description

The Shaft,straight, cataloged under National Stock Number 3040-00-975-9786, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is New Haven Mfg Corp. Government technical data includes 9 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 1 commercial cross-reference from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 11 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-00-975-9786
Primary Part Number1668
Item NameShaft,straight
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerNew Haven Mfg Corp
StatusACTIVE
Second End StyleSLOTTED
Second End Slot Depth0.250 INCHES NOMINAL IN
Second End Slot Width0.104 INCHES NOMINAL IN
Second End Diameter0.1875 INCHES NOMINAL IN
MaterialSTEEL CORROSION RESISTING
End SimilarityNOT IDENTICAL
Material Document and ClassificationQQ-S-763,CONDITION A FED SPEC SINGLE MATERIAL RESPONSE
First End Diameter0.1875 INCHES NOMINAL IN
First End StylePLAIN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 11
5905-00-106-7014 INTERCHANGEABLE
Resistor Set,matched
5961-00-166-02201668 INTERCHANGEABLE
Semiconductor Device Assembly
L3harris Technologies, Inc. Dba Harris Corp Div Harris Defense Communications
4820-00-528-23624200 INTERCHANGEABLE
Valve,check
Fluid Power, Inc.
5975-00-676-8392822 INTERCHANGEABLE
Disk,end Seal,electrical Conduit
Abb Installation Products Inc
4820-00-824-5274341-01 INTERCHANGEABLE
Seat,valve
Trac Regulator Co., Inc. Dba Trac Regulator Co Inc
5970-00-912-1949 INTERCHANGEABLE
Insulation Sheet,electrical
4730-01-007-1965 INTERCHANGEABLE
Fitting,lubrication
4330-01-210-587851668 INTERCHANGEABLE
Filter Element,fluid
Wix Corp
5975-01-325-06341668 INTERCHANGEABLE
Chase Nipple,conduit
Raco, a Division of Hubbell Incorporated(delaware)
5330-01-368-7416D2491 PIECE E INTERCHANGEABLE
Gasket
Rix Industries
Cross-Reference Index
Part NumberManufacturer
1668 New Haven Mfg Corp (USA)
Related Parts
5905-00-106-7014INTERCHANGEABLE
RESISTOR SET,MATCHED
5961-00-166-0220INTERCHANGEABLE
SEMICONDUCTOR DEVICE ASSEMBLY
1668
4820-00-528-2362INTERCHANGEABLE
VALVE,CHECK
4200
5975-00-676-8392INTERCHANGEABLE
DISK,END SEAL,ELECTRICAL CONDUIT
822
4820-00-824-5274INTERCHANGEABLE
SEAT,VALVE
341-01
5970-00-912-1949INTERCHANGEABLE
INSULATION SHEET,ELECTRICAL
4730-01-007-1965INTERCHANGEABLE
FITTING,LUBRICATION
4330-01-210-5878INTERCHANGEABLE
FILTER ELEMENT,FLUID
51668
5975-01-325-0634INTERCHANGEABLE
CHASE NIPPLE,CONDUIT
1668
5330-01-368-7416INTERCHANGEABLE
GASKET
D2491 PIECE E
5940-01-447-9870INTERCHANGEABLE
TERMINAL,LUG
92N3589

Frequently Asked Questions

What is NSN 3040-00-975-9786?

NSN 3040-00-975-9786 is a Shaft,straight, manufactured by New Haven Mfg Corp, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-975-9786?

NSN 3040-00-975-9786 has 1 cross-referenced part number: 1668 (New Haven Mfg Corp).

What NSN replaces 3040-00-975-9786?

There are 11 known substitutes for 3040-00-975-9786: 5905-00-106-7014, 5961-00-166-0220, 4820-00-528-2362 and 8 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 1668?

Key specifications for 1668: Second End Style: SLOTTED; Second End Slot Depth: 0.250 INCHES NOMINAL IN; Second End Slot Width: 0.104 INCHES NOMINAL IN; Second End Diameter: 0.1875 INCHES NOMINAL IN. 10 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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