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Technical Data Sheet
PartsTable / COMPONENT / MS27021-11
MS27021-11 ✓ 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 COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: ALUMINUM ALLOY BODY, leg_length: 2.750 INCHES MINIMUM IN, overall_length: 5.188 INCHES MINIMUM AND 5.781 INCHES MAXIMUM IN, connection_type: UNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION, connection_style: BARBED OR SERRATED END ALL ENDS, style_designator: MALE COUPLING HALF. This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-938-7996, 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
MS27021-11
NSN: 4730-00-938-7996
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length2.750 INCHES MINIMUM IN
overall_length5.188 INCHES MINIMUM AND 5.781 INCHES MAXIMUM IN
connection_typeUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
quick_disconnect_methodCAM-LOCKING ALL ENDS
quick_disconnect_nominal_size1.984 INCHES ALL ENDS IN
material_document_and_classificationQQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
nominal_inside_diameter_hose_accommodated1.984 INCHES ALL ENDS IN
surface_treatment_document_and_classificationMIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
NSN4730-00-938-7996
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS27021-11 · 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
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT ALL ENDS
•
SURFACE TREATMENT: ANODIZE BODY
•
MATERIAL: ALUMINUM ALLOY BODY
•
QUICK DISCONNECT METHOD: CAM-LOCKING ALL ENDS
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
•
QUICK DISCONNECT NOMINAL SIZE: 1.984 INCHES ALL ENDS IN
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 1.984 INCHES ALL ENDS IN
TECHNICAL CHARACTERISTICS (FLIS)
STYLE DESIGNATORMALE COUPLING HALF
CONNECTION TYPEEXTERNAL QUICK DISCONNECT ALL ENDS
SURFACE TREATMENTANODIZE BODY
MATERIALALUMINUM ALLOY BODY
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-601,T6 FED SPEC 1ST MATERIAL RESPONSE AND QQ-A-601,T5 FED SPEC 2ND MATERIAL RESPONSE BODY
QUICK DISCONNECT NOMINAL SIZE1.984 INCHES ALL ENDS IN
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED1.984 INCHES ALL ENDS IN
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625,TY 2 MIL SPEC SINGLE TREATMENT RESPONSE BODY
VERIFIED SUBSTITUTES & CROSS-REFERENCES 28
MS27021-9Interchangeable
interchangeable cross-reference
interchangeable
15A107P1Interchangeable
interchangeable cross-reference
interchangeable
6-1-746-8-3AInterchangeable
interchangeable cross-reference
interchangeable
A-A-59326/2Interchangeable
interchangeable cross-reference
interchangeable
AA59326/2-4-BInterchangeable
interchangeable cross-reference
interchangeable
125-C-BRInterchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusCANCELLED
Availability—
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS27021-11?
MS27021-11 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace MS27021-11?
There are 28 known substitutes for MS27021-11: MS27021-9, 15A107P1, 6-1-746-8-3A and 25 more. Substitute compatibility should be verified for your specific system.
Is MS27021-11 still available?
MS27021-11 is currently cancelled.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026