PartsTable
Technical Data Sheet
PartsTable / COMPONENT / 7M 51
7M 51 ✓ 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 SLEEVE,FLARED,TUBE FITTING is a the manufacturer industrial component. Key specifications include special_features: TOROID. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-984-3373, 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
7M 51
NSN: 4730-00-984-3373
FSC: 4730
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
special_featuresTOROID
NSN4730-00-984-3373
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7M 51 · 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
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
FLANGE OUTSIDE DIAMETER: 0.972 INCHES NOMINAL IN
•
SLEEVE OUTSIDE DIAMETER: 0.826 INCHES NOMINAL IN
•
SEAT ANGLE IN DEG: 33.000
•
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.750 INCHES NOMINAL IN
•
FLANGE WIDTH: 0.266 INCHES NOMINAL IN
•
SURFACE TREATMENT: CADMIUM
TECHNICAL CHARACTERISTICS (FLIS)
OVERALL LENGTH0.688 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
FLANGE OUTSIDE DIAMETER0.972 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.826 INCHES NOMINAL IN
SEAT ANGLE IN DEG33.000
HOSE/TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.750 INCHES NOMINAL IN
FLANGE WIDTH0.266 INCHES NOMINAL IN
SURFACE TREATMENTCADMIUM
MATERIALSTEEL
STYLE DESIGNATORSLEEVE
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
7M5112Interchangeable
interchangeable cross-reference
interchangeable
7M51-16Interchangeable
interchangeable cross-reference
interchangeable
7M51Interchangeable
interchangeable cross-reference
interchangeable
7M51-8Interchangeable
interchangeable cross-reference
interchangeable
7M51-6Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
Ready to buy 7M 51?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 7M 51?
7M 51 is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace 7M 51?
There are 5 known substitutes for 7M 51: 7M5112, 7M51-16, 7M51 and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 7M 51?
7M 51 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-984-3373. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Comments (0)
No comments yet. Be the first to share what you know.
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 7M 51

✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026