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Technical Data Sheet
PartsTable / COMPONENT / 861-138
861-138 ✓ 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 REACTOR is a the manufacturer industrial component. Key specifications include material: COBALT ALLOY OVERALL, body_style: HOLE MOUNTED, body_width: 0.320 INCHES NOMINAL IN, body_height: 0.688 INCHES NOMINAL IN, body_length: 0.850 INCHES NOMINAL IN, overall_width: 0.320 INCHES NOMINAL IN. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-018-4898, 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
861-138
NSN: 4730-01-018-4898
FSC: 4730
CAGE: 33884 — HARVEL PLASTICS, INC. (USA)
SPECIFICATIONS
materialCOBALT ALLOY OVERALL
body_styleHOLE MOUNTED
body_width0.320 INCHES NOMINAL IN
body_height0.688 INCHES NOMINAL IN
body_length0.850 INCHES NOMINAL IN
overall_width0.320 INCHES NOMINAL IN
actuator_styleROUND
inclosure_typeFULLY INCLOSED
overall_height1.069 INCHES NOMINAL IN
overall_length0.850 INCHES NOMINAL IN
actuator_height0.069 INCHES NOMINAL IN
mounting_methodUNTHREADED HOLE(S)
NSN4730-01-018-4898
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 861-138 · 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 26
8974Interchangeable
interchangeable cross-reference
interchangeable
65-2010Interchangeable
interchangeable cross-reference
interchangeable
01008008Interchangeable
interchangeable cross-reference
interchangeable
819-007Interchangeable
interchangeable cross-reference
interchangeable
0041130-007Interchangeable
interchangeable cross-reference
interchangeable
01053170Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 861-138?
861-138 is a REACTOR.
What parts can replace 861-138?
There are 26 known substitutes for 861-138: 8974, 65-2010, 01008008 and 23 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 861-138?
861-138 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-018-4898. 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