B20-K51 — COUPLING HALF,QUICK DISCONNECT

✓ Government record, cited

— · HOSE FITTING

PRODUCT OVERVIEW

B20-K51: COUPLING HALF,QUICK DISCONNECT.

The COUPLING HALF,QUICK DISCONNECT is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING BODY, leg_length: 2.922 INCHES NOMINAL IN, overall_length: 5.484 INCHES NOMINAL IN, connection_type: EXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END, connection_style: PLAIN ALL ENDS, style_designator: MALE COUPLING HALF. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-126-6841, 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

B20-K51

NSN: 4730-01-126-6841
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 73992 — TUTHILL CORP HANSEN COUPLING DIV (USA)

SPECIFICATIONS

material	STEEL CORROSION RESISTING BODY
leg_length	2.922 INCHES NOMINAL IN
overall_length	5.484 INCHES NOMINAL IN
connection_type	EXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END
connection_style	PLAIN ALL ENDS
style_designator	MALE COUPLING HALF
nominal_thread_size	2.000 INCHES ALL ENDS IN
thread_series_designator	NPT ALL ENDS
nuclear_hardness_critical_feature	HARDENED
NSN	4730-01-126-6841

COMPONENT DIAGRAM

KEY FEATURES

•

CONNECTION STYLE: PLAIN ALL ENDS

•

CONNECTION TYPE: THREADED INTERNAL PIPE FIRST FLUID END CONNECTION

•

STYLE DESIGNATOR: MALE COUPLING HALF

•

LEG LENGTH: 2.922 INCHES NOMINAL IN

•

NOMINAL THREAD SIZE: 2.000 INCHES ALL ENDS IN

•

MATERIAL: STEEL CORROSION RESISTING BODY

TECHNICAL CHARACTERISTICS

CONNECTION STYLE	PLAIN ALL ENDS
CONNECTION TYPE	THREADED INTERNAL PIPE FIRST FLUID END CONNECTION
CONNECTION TYPE	EXTERNAL QUICK DISCONNECT SECOND QUICK DISCONNECT END
STYLE DESIGNATOR	MALE COUPLING HALF
OVERALL LENGTH	5.484 INCHES NOMINAL IN
LEG LENGTH	2.922 INCHES NOMINAL IN
NOMINAL THREAD SIZE	2.000 INCHES ALL ENDS IN
MATERIAL	STEEL CORROSION RESISTING BODY
THREAD SERIES DESIGNATOR	NPT ALL ENDS
NUCLEAR HARDNESS CRITICAL FEATURE	HARDENED

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 3

6408-117Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

MAT88478-2Reference document

Same NSN cross-reference

Reference document — Design control — primary reference

MAT88478Same NSN cross-reference

Same NSN cross-reference

Also cataloged under this NSN

LIFECYCLE

NSN statusActive· U.S. Government catalog

Acquisition advice: Insurance item — stocked against contingency demandDemilitarization required — critical (Q)

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FREQUENTLY ASKED QUESTIONS

What is B20-K51?

B20-K51 is a COUPLING HALF,QUICK DISCONNECT.

What parts can replace B20-K51?

There are 3 known substitutes for B20-K51: 6408-117, MAT88478-2, MAT88478. Substitute compatibility should be verified for your specific system.

What is the NSN for B20-K51?

B20-K51 is cataloged in the U.S. Government catalog under NSN 4730-01-126-6841. This indicates validated use in U.S. government and defense supply chains.

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