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3M851ED ✓ 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

RING ASSEMBLY,ELECTRICAL CONTACT. Key specifications include material: PLASTIC POLYVINYL CHLORIDE (PVC), special_features: DESIGNED FOR SC80 IP3, style_designator: OUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL), external_thread_size: 3/4 IN.-14 IN, internal_thread_size: 1/2 IN.-14 IN, ingested_liquid_approval: APPROVED. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-861-8357, 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
3M851ED
NSN: 4730-00-861-8357
FSC: 4730
CAGE: 93908 — CARLON A LAMSON AND SESSIONS CO (USA)
SPECIFICATIONS
materialPLASTIC POLYVINYL CHLORIDE (PVC)
special_featuresDESIGNED FOR SC80 IP3
style_designatorOUTSIDE HEXAGON OR OCTAGON (PARTIAL OR FULL THREAD OPTIONAL)
external_thread_size3/4 IN.-14 IN
internal_thread_size1/2 IN.-14 IN
ingested_liquid_approvalAPPROVED
external_thread_directionRIGHT-HAND
internal_thread_directionRIGHT-HAND
ingested_liquid_use_approving_agencyNATIONAL SANITATION FOUNDATION TESTING LABORATORY,INC
external_screw_thread_series_designatorNPT
internal_screw_thread_series_designatorNPT
NSN4730-00-861-8357
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3M851ED · 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
•
EXTERNAL THREAD SIZE: 3/4 IN.-14 IN
•
INTERNAL THREAD SIZE: 1/2 IN.-14 IN
•
EXTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
•
INGESTED LIQUID USE APPROVING AGENCY: NATIONAL SANITATION FOUNDATION TESTING LABORATORY,INC
•
WORKING TEMP AND SERVICE TYPE: 73.0 DEG FAHRENHEIT MINIMUM WATER AND 180.0 DEG FAHRENHEIT MAXIMUM WATER AND 73.0 DEG FAHRENHEIT MINIMUM OIL AND 180.0 DEG FAHRENHEIT MAXIMUM OIL AND 73.0 DEG FAHRENHEIT MINIMUM GAS AND 180.0 DEG FAHRENHEIT MAXIMUM GAS
•
EXTERNAL THREAD DIRECTION: RIGHT-HAND
•
INGESTED LIQUID APPROVAL: APPROVED
•
INTERNAL SCREW THREAD SERIES DESIGNATOR: NPT
TECHNICAL CHARACTERISTICS (FLIS)
EXTERNAL THREAD SIZE3/4 IN.-14 IN
INTERNAL THREAD SIZE1/2 IN.-14 IN
EXTERNAL SCREW THREAD SERIES DESIGNATORNPT
INGESTED LIQUID USE APPROVING AGENCYNATIONAL SANITATION FOUNDATION TESTING LABORATORY,INC
WORKING TEMP AND SERVICE TYPE73.0 DEG FAHRENHEIT MINIMUM WATER AND 180.0 DEG FAHRENHEIT MAXIMUM WATER AND 73.0 DEG FAHRENHEIT MINIMUM OIL AND 180.0 DEG FAHRENHEIT MAXIMUM OIL AND 73.0 DEG FAHRENHEIT MINIMUM GAS AND 180.0 DEG FAHRENHEIT MAXIMUM GAS
EXTERNAL THREAD DIRECTIONRIGHT-HAND
INGESTED LIQUID APPROVALAPPROVED
INTERNAL SCREW THREAD SERIES DESIGNATORNPT
MATERIALPLASTIC POLYVINYL CHLORIDE (PVC)
SPECIAL FEATURESDESIGNED FOR SC80 IP3
VERIFIED SUBSTITUTES & CROSS-REFERENCES 23
4589K78Interchangeable
interchangeable cross-reference
interchangeable
5118-3-4 3/4X1/2Interchangeable
interchangeable cross-reference
interchangeable
839-101Interchangeable
interchangeable cross-reference
interchangeable
9808-020Interchangeable
interchangeable cross-reference
interchangeable
F437Interchangeable
interchangeable cross-reference
interchangeable
29108Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3M851ED?
3M851ED is a RING ASSEMBLY,ELECTRICAL CONTACT.
What parts can replace 3M851ED?
There are 23 known substitutes for 3M851ED: 4589K78, 5118-3-4 3/4X1/2, 839-101 and 20 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3M851ED?
3M851ED is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-861-8357. 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