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MS51532B4S — ADAPTER,STRAIGHT,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MS51532B4S: ADAPTER,STRAIGHT,TUBE TO BOSS.

The ADAPTER,STRAIGHT,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include criticality_code_justification: ZZZY, part_name_assigned_by_controlling_agency: CAP,FITTING,TUBE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-127-3942, 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
MS51532B4S
NSN: 4730-01-127-3942
NIINs: 011273942, 016425863, 016653045, 016692059, 016745505
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
criticality_code_justificationZZZY
part_name_assigned_by_controlling_agencyCAP,FITTING,TUBE
NSN4730-01-127-3942
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS51532B4S · 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
•
CONNECTION STYLE: FLARE
•
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED: 0.250 INCHES NOMINAL IN
•
STYLE DESIGNATOR: CAP
•
OPERATING PRESSURE: 3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
•
THREAD DIRECTION: RIGHT-HAND INTERNAL
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NOMINAL THREAD SIZE: 0.437 INCHES INTERNAL IN
•
SEAT ANGLE: 37.0 DEGREES
•
SPECIFICATION/STANDARD DATA: 96906-MS51532 GOVERNMENT STANDARD
TECHNICAL CHARACTERISTICS
CONNECTION STYLEFLARE
TUBE OUTSIDE DIAMETER FOR WHICH DESIGNED0.250 INCHES NOMINAL IN
STYLE DESIGNATORCAP
OPERATING PRESSURE3000.0 POUNDS PER SQUARE INCH (PSI) MAXIMUM LBS
THREAD DIRECTIONRIGHT-HAND INTERNAL
NOMINAL THREAD SIZE0.437 INCHES INTERNAL IN
SEAT ANGLE37.0 DEGREES
SPECIFICATION/STANDARD DATA96906-MS51532 GOVERNMENT STANDARD
MAXIMUM OPERATING TEMP250.0 FAHRENHEIT DEGF
THREAD CLASS2B INTERNAL
SUBSTITUTES & CROSS-REFERENCES 2
MIL-DTL-18866Reference document
Same NSN cross-reference
Reference document — Identification reference
MIL-F-18866Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is MS51532B4S?
MS51532B4S is a ADAPTER,STRAIGHT,TUBE TO BOSS.
What parts can replace MS51532B4S?
There are 2 known substitutes for MS51532B4S: MIL-DTL-18866, MIL-F-18866. Substitute compatibility should be verified for your specific system.
What is the NSN for MS51532B4S?
MS51532B4S is cataloged in the U.S. Government catalog under NSN 4730-01-127-3942. 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.