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Technical Data Sheet
PartsTable / COMPONENT / MS27021-5
MS27021-5 ✓ 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: 2.500 INCHES MINIMUM IN, overall_length: 4.124 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END, connection_style: BARBED OR SERRATED END ALL ENDS, style_designator: MALE COUPLING HALF. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-164-9254, 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
MS27021-5
NSN: 4730-01-164-9254
FSC: 4730
CAGE: 96906 — MILITARY STANDARDS PROMULGATED BY MILITARY DEPARTMENTS UNDER AUTHORITY OF DEFENSE STANDARDIZATION MANUAL 4120 3-M
SPECIFICATIONS
materialALUMINUM ALLOY BODY
leg_length2.500 INCHES MINIMUM IN
overall_length4.124 INCHES NOMINAL IN
connection_typeEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
connection_styleBARBED OR SERRATED END ALL ENDS
style_designatorMALE COUPLING HALF
surface_treatmentANODIZE BODY
quick_disconnect_methodCAM-LOCKING ALL ENDS
specification/standard_data96906-MS27021 GOVERNMENT STANDARD
quick_disconnect_nominal_size1.000 INCHES ALL ENDS IN
material_document_and_classificationQQ-A-601 FED SPEC SINGLE MATERIAL RESPONSE BODY
nominal_inside_diameter_hose_accommodated0.984 INCHES ALL ENDS IN
NSN4730-01-164-9254
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MS27021-5 · 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
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-A-601 FED SPEC SINGLE MATERIAL RESPONSE BODY
•
QUICK DISCONNECT METHOD: CAM-LOCKING ALL ENDS
•
CONNECTION STYLE: BARBED OR SERRATED END ALL ENDS
•
SPECIFICATION/STANDARD DATA: 96906-MS27021 GOVERNMENT STANDARD
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.984 INCHES ALL ENDS IN
•
CONNECTION TYPE: EXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
•
STYLE DESIGNATOR: MALE COUPLING HALF
•
SURFACE TREATMENT DOCUMENT AND CLASSIFICATION: MIL-A-8625F,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-A-601 FED SPEC SINGLE MATERIAL RESPONSE BODY
QUICK DISCONNECT METHODCAM-LOCKING ALL ENDS
CONNECTION STYLEBARBED OR SERRATED END ALL ENDS
SPECIFICATION/STANDARD DATA96906-MS27021 GOVERNMENT STANDARD
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.984 INCHES ALL ENDS IN
CONNECTION TYPEEXTERNAL QUICK DISCONNECT FIRST QUICK DISCONNECT END
STYLE DESIGNATORMALE COUPLING HALF
SURFACE TREATMENT DOCUMENT AND CLASSIFICATIONMIL-A-8625F,TYPE 2,CLASS 1 MIL SPEC SINGLE TREATMENT RESPONSE BODY
CONNECTION TYPEUNTHREADED EXTERNAL HOSE FIRST FLUID END CONNECTION
QUICK DISCONNECT NOMINAL SIZE1.000 INCHES ALL ENDS IN
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
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is MS27021-5?
MS27021-5 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace MS27021-5?
There are 28 known substitutes for MS27021-5: MS27021-9, 15A107P1, 6-1-746-8-3A and 25 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MS27021-5?
MS27021-5 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-164-9254. 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