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Technical Data Sheet
PartsTable / COMPONENT / 77917-34X1PC18
77917-34X1PC18 ✓ 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 ADAPTER,STRAIGHT,TUBE TO HOSE is a the manufacturer industrial component. Key specifications include material: NICKEL ALLOY OVERALL, seat_angle: 37.0 DEGREES FIRST END, thread_class: 2B FIRST END, nominal_thread_size: 1.312 INCHES FIRST END IN, nominal_overall_length: 2.800 INCHES IN, thread_quantity_per_inch: 12 FIRST END. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-070-1263, 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
77917-34X1PC18
NSN: 4730-00-070-1263
FSC: 4730
CAGE: 96169 — ELECTRIC BOAT CORPORATION DIV GENERAL DYNAMICS ELECTRIC BOAT (USA)
SPECIFICATIONS
materialNICKEL ALLOY OVERALL
seat_angle37.0 DEGREES FIRST END
thread_class2B FIRST END
nominal_thread_size1.312 INCHES FIRST END IN
nominal_overall_length2.800 INCHES IN
thread_quantity_per_inch12 FIRST END
thread_series_designatorUN FIRST END
furnished_items_and_quantity1 SOCKET
criticality_code_justificationZZZY
material_document_and_classificationQQ-N-281,CL A FED SPEC SINGLE MATERIAL RESPONSE OVERALL
nominal_inside_diameter_hose_accommodated0.875 INCHES SECOND END IN
nominal_outside_diameter_hose_accommodated1.234 INCHES SECOND END IN
NSN4730-00-070-1263
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 77917-34X1PC18 · 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
•
NOMINAL THREAD SIZE: 1.312 INCHES FIRST END IN
•
CRITICALITY CODE JUSTIFICATION: ZZZY
•
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED: 1.000 INCHES FIRST END IN
•
THREAD QUANTITY PER INCH: 12 FIRST END
•
FURNISHED ITEMS AND QUANTITY: 1 SOCKET
•
NOMINAL OVERALL LENGTH: 2.800 INCHES IN
•
THREAD SERIES DESIGNATOR: UN FIRST END
•
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICS: MATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
TECHNICAL CHARACTERISTICS (FLIS)
NOMINAL THREAD SIZE1.312 INCHES FIRST END IN
CRITICALITY CODE JUSTIFICATIONZZZY
NOMINAL OUTSIDE DIAMETER TUBE ACCOMMODATED1.000 INCHES FIRST END IN
THREAD QUANTITY PER INCH12 FIRST END
FURNISHED ITEMS AND QUANTITY1 SOCKET
NOMINAL OVERALL LENGTH2.800 INCHES IN
THREAD SERIES DESIGNATORUN FIRST END
REFERENCE NUMBER DIFFERENTIATING CHARACTERISTICSMATERIAL CONTROLLED IAW NAVSEA 0948-LP-045-7010 MATERIAL CONTROL STANDARD FOR LEVEL I ITEMS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.875 INCHES SECOND END IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED1.234 INCHES SECOND END IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 9
441-116Interchangeable
interchangeable cross-reference
interchangeable
5012-16MAInterchangeable
interchangeable cross-reference
interchangeable
H4011-16-MInterchangeable
interchangeable cross-reference
interchangeable
4-411-16L1Interchangeable
Same NIIN cross-reference
interchangeable
77917-34X1PC18L1Interchangeable
Same NIIN cross-reference
interchangeable
20622-16-16NAInterchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 77917-34X1PC18?
77917-34X1PC18 is a ADAPTER,STRAIGHT,TUBE TO HOSE.
What parts can replace 77917-34X1PC18?
There are 9 known substitutes for 77917-34X1PC18: 441-116, 5012-16MA, H4011-16-M and 6 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 77917-34X1PC18?
77917-34X1PC18 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-070-1263. 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