PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

S4-30Shaft,straight

W. M. Berg, Inc. · NSN 3040-01-626-0645 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-626-0645 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-626-0645. Primary manufacturer part number: S4-30.
Features
  • Shaft,straight — FSC 3040
  • End Similarity: IDENTICAL
  • Material: STEEL COMP 303
  • First End Style: PLAIN
  • First End Diameter: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
  • 1 verified cross-reference
  • Primary manufacturer: W. M. Berg, Inc.
Applications
  • Applications requiring Steel Comp 303 construction
General Description

The Shaft,straight, cataloged under National Stock Number 3040-01-626-0645, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is W. M. Berg, Inc.. Government technical data includes 4 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. 5 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-626-0645
Primary Part NumberS4-30
Item NameShaft,straight
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerW. M. Berg, Inc.
StatusACTIVE
End SimilarityIDENTICAL
MaterialSTEEL COMP 303
First End StylePLAIN
First End Diameter0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 5
6810-00-221-4722 INTERCHANGEABLE
Sodium Sulfite,anhydrous
6810-00-569-6604 INTERCHANGEABLE
Sodium Sulfite,anhydrous
5950-00-645-0690 INTERCHANGEABLE
Transformer,audio Frequency
4710-00-848-35618-304 INTERCHANGEABLE
Tube Assembly,metal
Big a Auto Parts Inc Div of Big a Jobber Corp
4250-01-312-0765 INTERCHANGEABLE
Reclaimer,solvent
Cross-Reference Index
Part NumberManufacturer
S4-30 W. M. Berg, Inc. (USA)
Related Parts
6810-00-221-4722INTERCHANGEABLE
SODIUM SULFITE,ANHYDROUS
6810-00-569-6604INTERCHANGEABLE
SODIUM SULFITE,ANHYDROUS
5950-00-645-0690INTERCHANGEABLE
TRANSFORMER,AUDIO FREQUENCY
4710-00-848-3561INTERCHANGEABLE
TUBE ASSEMBLY,METAL
8-304
4250-01-312-0765INTERCHANGEABLE
RECLAIMER,SOLVENT

Frequently Asked Questions

What is NSN 3040-01-626-0645?

NSN 3040-01-626-0645 is a Shaft,straight, manufactured by W. M. Berg, Inc., classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-626-0645?

NSN 3040-01-626-0645 has 1 cross-referenced part number: S4-30 (W. M. Berg, Inc.).

What NSN replaces 3040-01-626-0645?

There are 5 known substitutes for 3040-01-626-0645: 6810-00-221-4722, 6810-00-569-6604, 5950-00-645-0690 and 2 more. Verify interchangeability with system specifications before substitution.

What are the specifications of S4-30?

Key specifications for S4-30: End Item Identification: B-1; End Similarity: IDENTICAL; Material: STEEL COMP 303; Special Features: BOTH ENDS ARE CHAMFERED .03 X 45 DEGREES.. 7 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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