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7M51-5 — SLEEVE,FLARED,TUBE FITTING

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7M51-5: SLEEVE,FLARED,TUBE FITTING.

The SLEEVE,FLARED,TUBE FITTING is a the manufacturer industrial component. Key specifications include material: STEEL COMP 4130 OR STEEL COMP 4140, flange_width: 0.156 INCHES NOMINAL IN, overall_length: 0.438 INCHES NOMINAL IN, style_designator: SLEEVE, seat_angle_in_deg: 33.0, surface_treatment: CADMIUM AND CHROMATE. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-984-8523, 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
7M51-5
NSN: 4730-00-984-8523
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 76301 — THE BOEING COMPANY DIV DEFENSE (USA)
SPECIFICATIONS
materialSTEEL COMP 4130 OR STEEL COMP 4140
flange_width0.156 INCHES NOMINAL IN
overall_length0.438 INCHES NOMINAL IN
style_designatorSLEEVE
seat_angle_in_deg33.0
surface_treatmentCADMIUM AND CHROMATE
casehardening_indicatorNOT CASEHARDENED
flange_outside_diameter0.445 INCHES NOMINAL IN
sleeve_outside_diameter0.366 INCHES NOMINAL IN
metallic_hardness_rating35.0 MINIMUM ROCKWELL C AND 40.0 MAXIMUM ROCKWELL C
hose/tube_outside_diameter_for_which_designed0.313 INCHES NOMINAL IN
NSN4730-00-984-8523
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7M51-5 · 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
•
SEAT ANGLE IN DEG: 33.0
•
STYLE DESIGNATOR: SLEEVE
•
SLEEVE OUTSIDE DIAMETER: 0.366 INCHES NOMINAL IN
•
CASEHARDENING INDICATOR: NOT CASEHARDENED
•
SURFACE TREATMENT: CADMIUM AND CHROMATE
•
FLANGE WIDTH: 0.156 INCHES NOMINAL IN
•
MATERIAL: STEEL COMP 4130 OR STEEL COMP 4140
TECHNICAL CHARACTERISTICS
SEAT ANGLE IN DEG33.0
STYLE DESIGNATORSLEEVE
OVERALL LENGTH0.438 INCHES NOMINAL IN
SLEEVE OUTSIDE DIAMETER0.366 INCHES NOMINAL IN
CASEHARDENING INDICATORNOT CASEHARDENED
SURFACE TREATMENTCADMIUM AND CHROMATE
FLANGE WIDTH0.156 INCHES NOMINAL IN
MATERIALSTEEL COMP 4130 OR STEEL COMP 4140
FLANGE OUTSIDE DIAMETER0.445 INCHES NOMINAL IN
METALLIC HARDNESS RATING35.0 MINIMUM ROCKWELL C AND 40.0 MAXIMUM ROCKWELL C
OTHER ITEMS IN FSC 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
4730-00-000-1895 4730-00-000-4289 4730-00-000-4445 4730-00-000-8373 4730-00-000-8897 4730-00-001-0007 4730-00-001-0008
SUBSTITUTES & CROSS-REFERENCES 1
75M51Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7M51-5?
7M51-5 is a SLEEVE,FLARED,TUBE FITTING.
What parts can replace 7M51-5?
There is 1 known substitute for 7M51-5: 75M51. Substitute compatibility should be verified for your specific system.
What is the NSN for 7M51-5?
7M51-5 is cataloged in the U.S. Government catalog under NSN 4730-00-984-8523. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.