PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

A3-21Shaft,straight

Roller Bearing Co of America, Inc Div Pic Design · NSN 3040-00-980-0727 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-00-980-0727 — this item is cataloged by the U.S. Government under National Stock Number 3040-00-980-0727. Primary manufacturer part number: A3-21.
Features
  • Shaft,straight — FSC 3040
  • First End Style: PLAIN
  • First End Diameter: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
  • Material: STEEL COMP 303
  • End Similarity: IDENTICAL
  • Surface Finish: 10.0 MICROINCHES
  • 4 verified cross-references
  • Primary manufacturer: Roller Bearing Co of America, Inc Div Pic Design
Applications
  • Applications requiring Steel Comp 303 construction
General Description

The Shaft,straight, cataloged under National Stock Number 3040-00-980-0727, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is Roller Bearing Co of America, Inc Div Pic Design. Government technical data includes 5 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
NSN3040-00-980-0727
Primary Part NumberA3-21
Item NameShaft,straight
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerRoller Bearing Co of America, Inc Div Pic Design
StatusACTIVE
First End StylePLAIN
First End Diameter0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN
MaterialSTEEL COMP 303
End SimilarityIDENTICAL
Surface Finish10.0 MICROINCHES
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 12
6110-00-129-8698A321 INTERCHANGEABLE
Panel,power Distribution
Lockheed Martin Corp
5342-00-200-41148177310 INTERCHANGEABLE
Mount,resilient,weapon System
Us Army Aviation and Missile Command
6130-00-635-8505 INTERCHANGEABLE
Rectifier,metallic
2520-00-734-9414A321 INTERCHANGEABLE
Yoke Release Bearin
Eaton Corp Transmission Div
6240-00-777-4263A321 INTERCHANGEABLE
Lamp,glow
Chicago Miniature Lighting Llc Dba Chicago Miniature Optoelectron
9390-01-037-4571 INTERCHANGEABLE
Tape,reflective
4030-01-056-5534S-421 INTERCHANGEABLE
Socket,wire Rope
The Crosby Group Llc Dba the Crosby Group
5915-01-072-6683SCI-1021-000 INTERCHANGEABLE
Filter,radio Frequency Interfere
Spectrum Control, Inc.
5930-01-091-3318S42-1 INTERCHANGEABLE
Switch,toggle
Cae Usa Inc.
5995-01-228-7931 INTERCHANGEABLE
Wiring Harness
Cross-Reference Index
Part NumberManufacturer
A3-21 Roller Bearing Co of America, Inc Div Pic Design (USA)
09-1-000183 Nicolet Computer Graphics Div (USA)
S4-21 Roller Bearing Co of America, Inc Div Pic Design (USA)
S4-21-U W. M. Berg, Inc. (USA)
Related Parts
6110-00-129-8698INTERCHANGEABLE
PANEL,POWER DISTRIBUTION
A321
5342-00-200-4114INTERCHANGEABLE
MOUNT,RESILIENT,WEAPON SYSTEM
8177310
6130-00-635-8505INTERCHANGEABLE
RECTIFIER,METALLIC
2520-00-734-9414INTERCHANGEABLE
YOKE RELEASE BEARIN
A321
6240-00-777-4263INTERCHANGEABLE
LAMP,GLOW
A321
9390-01-037-4571INTERCHANGEABLE
TAPE,REFLECTIVE
4030-01-056-5534INTERCHANGEABLE
SOCKET,WIRE ROPE
S-421
5915-01-072-6683INTERCHANGEABLE
FILTER,RADIO FREQUENCY INTERFERE
SCI-1021-000
5930-01-091-3318INTERCHANGEABLE
SWITCH,TOGGLE
S42-1
5995-01-228-7931INTERCHANGEABLE
WIRING HARNESS
5120-01-335-0823INTERCHANGEABLE
SOCKET,SOCKET WRENCH
5305-01-499-6878INTERCHANGEABLE
SCREW,SOCKET-CLAMP
A-321

Frequently Asked Questions

What is NSN 3040-00-980-0727?

NSN 3040-00-980-0727 is a Shaft,straight, manufactured by Roller Bearing Co of America, Inc Div Pic Design, classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-00-980-0727?

NSN 3040-00-980-0727 has 4 cross-referenced part numbers: A3-21 (Roller Bearing Co of America, Inc Div Pic Design), 09-1-000183 (Nicolet Computer Graphics Div), S4-21 (Roller Bearing Co of America, Inc Div Pic Design), S4-21-U (W. M. Berg, Inc.).

What NSN replaces 3040-00-980-0727?

There are 12 known substitutes for 3040-00-980-0727: 6110-00-129-8698, 5342-00-200-4114, 6130-00-635-8505 and 9 more. Verify interchangeability with system specifications before substitution.

What are the specifications of A3-21?

Key specifications for A3-21: First End Style: PLAIN; First End Diameter: 0.2495 INCHES MINIMUM AND 0.2497 INCHES MAXIMUM IN; Material: STEEL COMP 303; End Similarity: IDENTICAL. 6 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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