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M2051CS — SHAFT,STRAIGHT

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

M2051CS: SHAFT,STRAIGHT.

The SHAFT,STRAIGHT is a the manufacturer industrial component. Key specifications include material: STEEL COMP 416, end_similarity: IDENTICAL, overall_length: 2.938 INCHES NOMINAL IN, surface_finish: 125.0 MICROINCHES, first_end_style: PLAIN, special_features: 0.125 IN. PIPE IN.

This part is cataloged in the U.S. Government catalog under NSN 4730-01-178-2990, indicating validated use in U.S. government and defense logistics supply chains.

Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels. Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
M2051CS
NSN: 4730-01-178-2990
NIINs: 011782990, 011782999
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 61208 — TWIN DISC, INCORPORATED DBA TWIN DISC MID-ATLANTIC (USA)
SPECIFICATIONS
materialSTEEL COMP 416
end_similarityIDENTICAL
overall_length2.938 INCHES NOMINAL IN
surface_finish125.0 MICROINCHES
first_end_stylePLAIN
special_features0.125 IN. PIPE IN
first_end_diameter0.1840 INCHES NOMINAL IN
end_item_identificationJSN WHIDBEY ISLAND CLASS LSD.
material_document_and_classificationQQ-S-763,CL 416,COND H FED SPEC SINGLE MATERIAL RESPONSE
NSN4730-01-178-2990
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: M2051CS · OEM ⚠ VERIFY BEFORE ORDERING NPT ≠ BSPT — tapered threads look identical but are NOT interchangeable. Wrong thread = leak. JIC (37°) ≠ AN (37°) ≠ SAE 45° — flare angles must match exactly. Measure thread pitch with gauge — visual identification is unreliable ✓ BROKER TIP Always use thread sealant (PTFE tape or pipe compound) on tapered threads (NPT/BSPT). JIC/AN flare fittings seal metal-to-metal — never use tape on flare connections PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURES0.125 IN. PIPE IN
END ITEM IDENTIFICATIONJSN WHIDBEY ISLAND CLASS LSD.
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 1
M2015CSReference document
Same NSN cross-reference
Reference document — Advisory reference — outside the item-of-supply concept
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is M2051CS?
M2051CS is a SHAFT,STRAIGHT.
What parts can replace M2051CS?
There is 1 known substitute for M2051CS: M2015CS. Substitute compatibility should be verified for your specific system.
What is the NSN for M2051CS?
M2051CS is cataloged in the U.S. Government catalog under NSN 4730-01-178-2990. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.