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Technical Data Sheet
PartsTable / COMPONENT / 2121103
2121103 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The PLUNGER is a the manufacturer industrial component. Key specifications include end_item_identification: HOWITZER LIGHT TOWED;105-MM,M102,1015-00-086-8164. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-334-7803, 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
2121103
NSN: 4730-00-334-7803
FSC: 4730
CAGE: 7X677 — GENERAL MOTORS LLC DBA GENERAL MOTORS LLC (USA)
SPECIFICATIONS
end_item_identificationHOWITZER LIGHT TOWED;105-MM,M102,1015-00-086-8164
general_characteristics_item_descriptionSTEEL,CHROMATE FINISH; 0.547 IN. O/A LG,0.406IN. OD; 0.328 IN. ID,0.375 IN. DEEP RECESS ONE END;OTHER END TAPERED TO 0.156FLAT SURFACE; WEIGHT 1 OZ PACKAGED @(UNIT OF 5) OZ
NSN4730-00-334-7803
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2121103 · 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
•
GENERAL CHARACTERISTICS ITEM DESCRIPTION: STEEL,CHROMATE FINISH; 0.547 IN. O/A LG,0.406IN. OD; 0.328 IN. ID,0.375 IN. DEEP RECESS ONE END;OTHER END TAPERED TO 0.156FLAT SURFACE; WEIGHT 1 OZ PACKAGED @(UNIT OF 5) OZ
TECHNICAL CHARACTERISTICS (FLIS)
END ITEM IDENTIFICATIONHOWITZER LIGHT TOWED;105-MM,M102,1015-00-086-8164
GENERAL CHARACTERISTICS ITEM DESCRIPTIONSTEEL,CHROMATE FINISH; 0.547 IN. O/A LG,0.406IN. OD; 0.328 IN. ID,0.375 IN. DEEP RECESS ONE END;OTHER END TAPERED TO 0.156FLAT SURFACE; WEIGHT 1 OZ PACKAGED @(UNIT OF 5) OZ
VERIFIED SUBSTITUTES & CROSS-REFERENCES 16
M35358Interchangeable
interchangeable cross-reference
interchangeable
390442-1Interchangeable
interchangeable cross-reference
interchangeable
538-825Interchangeable
interchangeable cross-reference
interchangeable
BXW00622000Interchangeable
interchangeable cross-reference
interchangeable
877040R1Interchangeable
interchangeable cross-reference
interchangeable
12141P11Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2121103?
2121103 is a PLUNGER.
What parts can replace 2121103?
There are 16 known substitutes for 2121103: M35358, 390442-1, 538-825 and 13 more. Substitute compatibility should be verified for your specific system.
Is 2121103 still available?
2121103 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026