PartsTable TECHNICAL DATA SHEET
JULY 2026Technical Data Sheet

12957Shaft,straight

DP Manufacturing Inc. · NSN 3040-01-344-6396 · FSC 3040 · No Item Name Available
Verified by PartsTable
NSN 3040-01-344-6396 — this item is cataloged by the U.S. Government under National Stock Number 3040-01-344-6396. Primary manufacturer part number: 12957.
Features
  • Shaft,straight — FSC 3040
  • Second End Diameter: 0.8750 INCHES NOMINAL IN
  • Material: STEEL
  • Second End Style: SPLINED (STRAIGHT)
  • First End Diameter: 0.8750 INCHES NOMINAL IN
  • End Similarity: NOT IDENTICAL
  • First End Style: TONGUE
  • 2 verified cross-references
Applications
  • Applications requiring Steel construction
General Description

The Shaft,straight, cataloged under National Stock Number 3040-01-344-6396, is classified within Federal Supply Class 3040 (No Item Name Available) of the Mechanical Power Transmission Equipment group. The primary manufacturer of record is DP Manufacturing Inc.. Government technical data includes 6 verified specifications, sourced from the Federal Logistics Information System (FLIS). This item has 2 commercial cross-references from 1 manufacturer, enabling identification through both NSN and commercial part number lookups. 4 verified substitutes exist in the FLIS interchangeability database. Current acquisition status: Active.

Technical Specifications
ParameterValue
NSN3040-01-344-6396
Primary Part Number12957
Item NameShaft,straight
FSC / FSG3040 / 30 — No Item Name Available
ManufacturerDP Manufacturing Inc.
StatusACTIVE
Second End Diameter0.8750 INCHES NOMINAL IN
MaterialSTEEL
Second End StyleSPLINED (STRAIGHT)
First End Diameter0.8750 INCHES NOMINAL IN
End SimilarityNOT IDENTICAL
First End StyleTONGUE
Lifecycle & Compliance
Acquisition StatusACTIVE
HAZMATNo
Verified Substitutes 4
5950-00-240-1309860444 INTERCHANGEABLE
Transformer,pulse
Raytheon Company Dba Raytheon
5930-00-755-34408781K11 INTERCHANGEABLE
Switch,toggle
Safran Power Usa, Llc
5325-00-763-0340 INTERCHANGEABLE
Ring,retaining
5305-00-788-373512957 INTERCHANGEABLE
Screw,machine
Stanadyne Corporation Dba Stanadyne Diesel Systems Div Diesel Systems
Cross-Reference Index
Part NumberManufacturer
12957-G DP Manufacturing Inc. (USA)
12957 PRIMARY DP Manufacturing Inc. (USA)
Related Parts
5950-00-240-1309INTERCHANGEABLE
TRANSFORMER,PULSE
860444
5930-00-755-3440INTERCHANGEABLE
SWITCH,TOGGLE
8781K11
5325-00-763-0340INTERCHANGEABLE
RING,RETAINING
5305-00-788-3735INTERCHANGEABLE
SCREW,MACHINE
12957

Frequently Asked Questions

What is NSN 3040-01-344-6396?

NSN 3040-01-344-6396 is a Shaft,straight, manufactured by DP Manufacturing Inc., classified under FSC 3040 (No Item Name Available). Status: active.

What are the part numbers for NSN 3040-01-344-6396?

NSN 3040-01-344-6396 has 2 cross-referenced part numbers: 12957-G (DP Manufacturing Inc.), 12957 (DP Manufacturing Inc.).

What NSN replaces 3040-01-344-6396?

There are 4 known substitutes for 3040-01-344-6396: 5950-00-240-1309, 5930-00-755-3440, 5325-00-763-0340 and 1 more. Verify interchangeability with system specifications before substitution.

What are the specifications of 12957?

Key specifications for 12957: Second End Diameter: 0.8750 INCHES NOMINAL IN; Overall Length: 17.750 INCHES NOMINAL IN; Material: STEEL; Special Features: TONGUE FLATTED SPLINED SHAFT-INPUT-C-MKO-3G G. 9 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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