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21TW8 ✓ 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 CONNECTOR,PLUG,ELECTRICAL is a the manufacturer industrial component. Key specifications include body_style: STRAIGHT SHAPE, INTERNAL COUPLING, shell_type: SOLID, thread_class: 2B, terminal_type: THREADED STUD SINGLE MATING END SINGLE CONTACT GROUPING, overall_length: 4.406 INCHES NOMINAL IN, shell_material: ALUMINUM ALLOY. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-074-0060, 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
21TW8
NSN: 4730-01-074-0060
FSC: 4730
CAGE: 75Q65 — OSHKOSH DEFENSE LLC (USA)
SPECIFICATIONS
body_styleSTRAIGHT SHAPE, INTERNAL COUPLING
shell_typeSOLID
thread_class2B
terminal_typeTHREADED STUD SINGLE MATING END SINGLE CONTACT GROUPING
overall_length4.406 INCHES NOMINAL IN
shell_materialALUMINUM ALLOY
insert_materialPLASTIC TETRAFLUOROETHYLENE SINGLE MATING END
contact_materialCOPPER ALLOY SINGLE MATING END SINGLE CONTACT GROUPING
overall_diameter1.375 INCHES NOMINAL IN
thread_directionRIGHT-HAND
terminal_locationBACK SINGLE MATING END SINGLE CONTACT GROUPING
mating_end_quantity1
NSN4730-01-074-0060
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 21TW8 · 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
VERIFIED SUBSTITUTES & CROSS-REFERENCES 13
86353AInterchangeable
interchangeable cross-reference
interchangeable
62063Interchangeable
interchangeable cross-reference
interchangeable
6839AInterchangeable
interchangeable cross-reference
interchangeable
49886Interchangeable
interchangeable cross-reference
interchangeable
50AS78HNMInterchangeable
interchangeable cross-reference
interchangeable
81-0875Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 21TW8?
21TW8 is a CONNECTOR,PLUG,ELECTRICAL.
What parts can replace 21TW8?
There are 13 known substitutes for 21TW8: 86353A, 62063, 6839A and 10 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 21TW8?
21TW8 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-074-0060. 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