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Technical Data Sheet
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3SD7 ✓ 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: COPPER ALLOY BODY, leg_length: 0.906 INCHES NOMINAL IN, overall_length: 2.625 INCHES MINIMUM AND 2.906 INCHES MAXIMUM IN, connection_style: HOSE GRIPPING NIPPLE ALL ENDS, style_designator: MALE COUPLING HALF, features_provided: SELF-SEALING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-005-7353, 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
3SD7
NSN: 4730-00-005-7353
FSC: 4730
CAGE: 16799 — MOSIER FLUID POWER OF OHIO INC DBA KC MOSIER CO (USA)
SPECIFICATIONS
materialCOPPER ALLOY BODY
leg_length0.906 INCHES NOMINAL IN
overall_length2.625 INCHES MINIMUM AND 2.906 INCHES MAXIMUM IN
connection_styleHOSE GRIPPING NIPPLE ALL ENDS
style_designatorMALE COUPLING HALF
features_providedSELF-SEALING
quick_disconnect_methodSPRING PUSH-PULL ALL ENDS
nondefinitive_spec/std_dataA CLASS AND 4 STYLE AND 1 TYPE
specification/standard_data58536-A-A-59439 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
quick_disconnect_nominal_size0.422 INCHES ALL ENDS IN
nominal_inside_diameter_hose_accommodated0.3985 INCHES ALL ENDS IN
first_end_outside_diameter_hose_accommodated0.625 INCHES NOMINAL IN
NSN4730-00-005-7353
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 3SD7 · 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: COPPER ALLOY BODY
•
LEG LENGTH: 0.906 INCHES NOMINAL IN
•
CONNECTION STYLE: HOSE GRIPPING NIPPLE ALL ENDS
•
QUICK DISCONNECT NOMINAL SIZE: 0.422 INCHES ALL ENDS IN
•
QUICK DISCONNECT METHOD: SPRING PUSH-PULL ALL ENDS
•
FEATURES PROVIDED: SELF-SEALING
•
SPECIFICATION/STANDARD DATA: 58536-A-A-59439 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
•
NONDEFINITIVE SPEC/STD DATA: A CLASS AND 4 STYLE AND 1 TYPE
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALCOPPER ALLOY BODY
LEG LENGTH0.906 INCHES NOMINAL IN
CONNECTION STYLEHOSE GRIPPING NIPPLE ALL ENDS
QUICK DISCONNECT NOMINAL SIZE0.422 INCHES ALL ENDS IN
QUICK DISCONNECT METHODSPRING PUSH-PULL ALL ENDS
FEATURES PROVIDEDSELF-SEALING
SPECIFICATION/STANDARD DATA58536-A-A-59439 PROFESSIONAL/INDUSTRIAL ASSOCIATION SPECIFICATION
NONDEFINITIVE SPEC/STD DATAA CLASS AND 4 STYLE AND 1 TYPE
STYLE DESIGNATORMALE COUPLING HALF
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.3985 INCHES ALL ENDS IN
VERIFIED SUBSTITUTES & CROSS-REFERENCES 5
AA59439-04-12-20-BInterchangeable
Same NIIN cross-reference
interchangeable
MILC4109Interchangeable
Same NIIN cross-reference
interchangeable
AA59439-004-12-20-BInterchangeable
Same NIIN cross-reference
interchangeable
M4109-04-12-20-BInterchangeable
Same NIIN cross-reference
interchangeable
A-A-59439Interchangeable
Same NIIN cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 3SD7?
3SD7 is a COUPLING HALF,QUICK DISCONNECT.
What parts can replace 3SD7?
There are 5 known substitutes for 3SD7: AA59439-04-12-20-B, MILC4109, AA59439-004-12-20-B and 2 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 3SD7?
3SD7 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-00-005-7353. 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