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MIL-F-5509 — ADAPTER,STRAIGHT,PIPE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

MIL-F-5509: ADAPTER,STRAIGHT,PIPE TO BOSS.

The ADAPTER,STRAIGHT,PIPE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL COMP 316 OVERALL, body_style: STEPPED, leg_length: 3.375 INCHES MINIMUM AND 3.469 INCHES MAXIMUM ALL ENDS IN, seat_angle: 37.0 DEGREES, reducer_type: CONCENTRIC, thread_class: 3A FIRST END A. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-001-3957, 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
MIL-F-5509
NSN: 4730-00-001-3957
NIINs: 000013957, 000063214, 000067464, 000093379, 000095261, 000119922, 000144043, 000234860, 000234864, 000234884, 000249571, 000432127, 000453304, 000454869, 000520589, 000531380, 000546266, 000546268, 000568304, 000568310, 000568321, 000575555, 000576654, 000576729, 000576731, 000576733, 000576734, 000576740, 000595154, 000602852, 000602853, 000602854, 000602855, 000602856, 000602857, 000602858, 000603247, 000603249, 000603395, 000603396, 000604166, 000607069, 000607075, 000607076, 000607078, 000610718, 000614064, 000620917, 000624948, 000636454, 000637675, 000681299, 000698936, 000711671, 000811579, 000813339, 000851902, 000870387, 000880205, 000892974, 000927833, 001001456, 001048749, 001130575, 001220525, 001257901, 001267458, 001314946, 001377875, 001394202, 001419011, 001421952, 001439043, 001439044, 001460372, 001499275, 001664244, 001697415, 001770046, 001856853, 001867800, 001869492, 001869493, 001869494, 001869495, 001869496, 001869503, 001869508, 001869961, 001869968, 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FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 81348 — FEDERAL SPECIFICATIONS PROMULGATED BY GENERAL SERVICES ADMINISTRATION WASHINGTON DC (USA)
SPECIFICATIONS
materialSTEEL COMP 316 OVERALL
body_styleSTEPPED
leg_length3.375 INCHES MINIMUM AND 3.469 INCHES MAXIMUM ALL ENDS IN
seat_angle37.0 DEGREES
reducer_typeCONCENTRIC
thread_class3A FIRST END A
overall_length2.250 INCHES NOMINAL IN
connection_typeTHREADED EXTERNAL BOSS ALL ENDS
connection_styleFLARED W/ GASKET SEAL (BOSS) ALL ENDS
special_featuresCAP DRILLER FOR ATTACHMENT FO SAFETY CHAIN
style_designatorINSERT AND THREADED INTERNAL
thread_directionRIGHT-HAND INTERNAL
NSN4730-00-001-3957
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: MIL-F-5509 · 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
SUBSTITUTES & CROSS-REFERENCES 4
AS4842/1/5-4KReference document
Same NSN cross-reference
Reference document — Secondary reference
2021-4-5CReference document
Same NSN cross-reference
Reference document — Secondary reference
AN816-5-4KReference document
Same NSN cross-reference
Reference document — Secondary reference
0103-4-5CReference document
Same NSN cross-reference
Reference document — Secondary reference
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 MIL-F-5509?
MIL-F-5509 is a ADAPTER,STRAIGHT,PIPE TO BOSS.
What parts can replace MIL-F-5509?
There are 4 known substitutes for MIL-F-5509: AS4842/1/5-4K, 2021-4-5C, AN816-5-4K and 1 more. Substitute compatibility should be verified for your specific system.
What is the NSN for MIL-F-5509?
MIL-F-5509 is cataloged in the U.S. Government catalog under NSN 4730-00-001-3957. This indicates validated use in U.S. government and defense supply chains.
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