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7005538-1 — NIPPLE,BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

7005538-1: NIPPLE,BOSS.

The NIPPLE,BOSS is a the manufacturer industrial component. Key specifications include material: STEEL CORROSION RESISTING OVERALL, thread_class: 2A ALL ENDS A, connection_type: THREADED EXTERNAL BOSS ALL ENDS, connection_style: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS, style_designator: CENTER WRENCHING FACILITY, nominal_thread_size: 0.250 INCHES ALL ENDS IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-241-2931, 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
7005538-1
NSN: 4730-01-241-2931
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialSTEEL CORROSION RESISTING OVERALL
thread_class2A ALL ENDS A
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
style_designatorCENTER WRENCHING FACILITY
nominal_thread_size0.250 INCHES ALL ENDS IN
nominal_overall_length1.219 INCHES IN
thread_series_designatorUNF ALL ENDS
NSN4730-01-241-2931
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 7005538-1 · 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: EXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
•
NOMINAL OVERALL LENGTH: 1.219 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL BOSS ALL ENDS
•
STYLE DESIGNATOR: CENTER WRENCHING FACILITY
•
NOMINAL THREAD SIZE: 0.250 INCHES ALL ENDS IN
•
THREAD CLASS: 2A ALL ENDS A
•
MATERIAL: STEEL CORROSION RESISTING OVERALL
•
THREAD SERIES DESIGNATOR: UNF ALL ENDS
TECHNICAL CHARACTERISTICS
CONNECTION STYLEEXTERNAL SEAT FOR GASKET SEAL (BOSS) ALL ENDS
NOMINAL OVERALL LENGTH1.219 INCHES IN
CONNECTION TYPETHREADED EXTERNAL BOSS ALL ENDS
STYLE DESIGNATORCENTER WRENCHING FACILITY
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
THREAD CLASS2A ALL ENDS A
MATERIALSTEEL CORROSION RESISTING OVERALL
THREAD SERIES DESIGNATORUNF ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 2
4F5F5-SSReference document
Same NSN cross-reference
Reference document — Secondary reference
SK7005538Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusCancelled· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 7005538-1?
7005538-1 is a NIPPLE,BOSS.
What parts can replace 7005538-1?
There are 2 known substitutes for 7005538-1: 4F5F5-SS, SK7005538. Substitute compatibility should be verified for your specific system.
What is the NSN for 7005538-1?
7005538-1 is cataloged in the U.S. Government catalog under NSN 4730-01-241-2931. 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.