PartsTable
Technical Data Sheet
PartsTable / COMPONENT / D-2021
D-2021 ✓ 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

DRIVE,ENGINE,ELECTRICAL STARTER. Key specifications include special_features: GEAR DRIVEN; SPRING ACTUATED, end_item_identification: 3930-01-158-0849, criticality_code_justification: ZZZY, reference_number_differentiating_characteristics: QUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-128-9216, 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
D-2021
NSN: 4730-01-128-9216
FSC: 4730
CAGE: 30793 — INSINGER MACHINE CO (USA)
SPECIFICATIONS
special_featuresGEAR DRIVEN; SPRING ACTUATED
end_item_identification3930-01-158-0849
criticality_code_justificationZZZY
reference_number_differentiating_characteristicsQUALITY ASSURANCE TESTED FOR SUBMARINE ANTENNA APPLICATION
NSN4730-01-128-9216
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: D-2021 · 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
TECHNICAL CHARACTERISTICS (FLIS)
SPECIAL FEATURESSTAINLESS STEEL
VERIFIED SUBSTITUTES & CROSS-REFERENCES 19
12F22C2148AAF4C05Interchangeable
interchangeable cross-reference
interchangeable
50 SA10GInterchangeable
interchangeable cross-reference
interchangeable
8210G009Interchangeable
interchangeable cross-reference
interchangeable
WW-P-460Interchangeable
interchangeable cross-reference
interchangeable
MS14310-5Interchangeable
interchangeable cross-reference
interchangeable
MS14310-5AInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is D-2021?
D-2021 is a DRIVE,ENGINE,ELECTRICAL STARTER.
What parts can replace D-2021?
There are 19 known substitutes for D-2021: 12F22C2148AAF4C05, 50 SA10G, 8210G009 and 16 more. Substitute compatibility should be verified for your specific system.
What is the NSN for D-2021?
D-2021 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-128-9216. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026