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Technical Data Sheet
PartsTable / COMPONENT / 61HD-8
61HD-8 ✓ 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 INVERTED NUT,TUBE COUPLING is a the manufacturer industrial component. Key specifications include color: CHARCOAL, width: 144.000 INCHES NOMINAL IN, material: STEEL, body_width: 0.400 INCHES NOMINAL IN, head_style: FLAT, stem_style: FLATTED AND GROOVED. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-677-3738, 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
61HD-8
NSN: 4730-00-677-3738
FSC: 4730
CAGE: 93061 — PARKER-HANNIFIN CORP DIV FLUID SYSTEM CONNECTOR DIVISION (USA)
SPECIFICATIONS
colorCHARCOAL
width144.000 INCHES NOMINAL IN
materialSTEEL
quantity2
body_width0.400 INCHES NOMINAL IN
head_styleFLAT
stem_styleFLATTED AND GROOVED
body_height0.640 INCHES NOMINAL IN
body_length0.400 INCHES NOMINAL IN
design_typeCLAMP, SETSCREW
head_height0.1406 INCHES NOMINAL IN
neck_radius0.3750 INCHES NOMINAL IN
NSN4730-00-677-3738
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 61HD-8 · 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 17
A260Interchangeable
interchangeable cross-reference
interchangeable
278-0375-010Interchangeable
interchangeable cross-reference
interchangeable
MS241PC11Interchangeable
interchangeable cross-reference
interchangeable
MS242PC11Interchangeable
interchangeable cross-reference
interchangeable
MS276PC11Interchangeable
interchangeable cross-reference
interchangeable
NV1084Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 61HD-8?
61HD-8 is a INVERTED NUT,TUBE COUPLING.
What parts can replace 61HD-8?
There are 17 known substitutes for 61HD-8: A260, 278-0375-010, MS241PC11 and 14 more. Substitute compatibility should be verified for your specific system.
Is 61HD-8 still available?
61HD-8 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