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4549K537 — NIPPLE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

4549K537: NIPPLE,PIPE.

The NIPPLE,PIPE is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, connection_type: THREADED EXTERNAL PIPE ALL ENDS, connection_style: PLAIN (PIPE) ALL ENDS, style_designator: LONG, nominal_thread_size: 0.250 INCHES ALL ENDS IN, nominal_overall_length: 4.000 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-710-6548, 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
4549K537
NSN: 4730-01-710-6548
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 39428 — MCMASTER-CARR SUPPLY CO (USA)
SPECIFICATIONS
materialSTEEL OVERALL
connection_typeTHREADED EXTERNAL PIPE ALL ENDS
connection_stylePLAIN (PIPE) ALL ENDS
style_designatorLONG
nominal_thread_size0.250 INCHES ALL ENDS IN
nominal_overall_length4.000 INCHES IN
end_item_identification5180-01-701-7480
thread_quantity_per_inch18 ALL ENDS
thread_series_designatorNPT ALL ENDS
material_document_and_classificationASTM A53F AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
part_name_assigned_by_controlling_agencyNIPPLE, PIPE
nominal_inside_diameter_hose_accommodated0.364 INCHES ALL ENDS IN
NSN4730-01-710-6548
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 4549K537 · 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: PLAIN (PIPE) ALL ENDS
•
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED: 0.364 INCHES ALL ENDS IN
•
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED: 0.540 INCHES ALL ENDS IN
•
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED: 0.088 INCHES ALL ENDS BULKHEAD IN
•
NOMINAL OVERALL LENGTH: 4.000 INCHES IN
•
CONNECTION TYPE: THREADED EXTERNAL PIPE ALL ENDS
•
STYLE DESIGNATOR: LONG
•
MATERIAL DOCUMENT AND CLASSIFICATION: ASTM A53F AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
TECHNICAL CHARACTERISTICS
CONNECTION STYLEPLAIN (PIPE) ALL ENDS
NOMINAL INSIDE DIAMETER HOSE ACCOMMODATED0.364 INCHES ALL ENDS IN
NOMINAL OUTSIDE DIAMETER HOSE ACCOMMODATED0.540 INCHES ALL ENDS IN
TUBING WALL NOMINAL THICKNESS FOR WHICH DESIGNED0.088 INCHES ALL ENDS BULKHEAD IN
NOMINAL OVERALL LENGTH4.000 INCHES IN
CONNECTION TYPETHREADED EXTERNAL PIPE ALL ENDS
STYLE DESIGNATORLONG
MATERIAL DOCUMENT AND CLASSIFICATIONASTM A53F AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) SINGLE MATERIAL RESPONSE OVERALL
NOMINAL THREAD SIZE0.250 INCHES ALL ENDS IN
PIPE WALL THICKNESS DESIGNATION FOR WHICH DESIGNEDSCHEDULE 40 ALL ENDS
SUBSTITUTES & CROSS-REFERENCES 1
12412329Reference document
Same NSN cross-reference
Reference document — Drawing number reference only
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 4549K537?
4549K537 is a NIPPLE,PIPE.
What parts can replace 4549K537?
There is 1 known substitute for 4549K537: 12412329. Substitute compatibility should be verified for your specific system.
What is the NSN for 4549K537?
4549K537 is cataloged in the U.S. Government catalog under NSN 4730-01-710-6548. This indicates validated use in U.S. government and defense supply chains.
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