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253-59-016ITEM44 — FLANGE,PIPE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

253-59-016ITEM44: FLANGE,PIPE.

The FLANGE,PIPE is a the manufacturer industrial component. Key specifications include material: IRON, groove_depth: 0.062 INCHES NOMINAL IN, groove_width: 0.242 INCHES NOMINAL IN, furnished_items: BOLT, features_provided: O RING, nominal_thread_size: 1.250 INCHES IN. This part is cataloged in the U.S.

Government catalog under NSN 4730-00-564-3452, 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
253-59-016ITEM44
NSN: 4730-00-564-3452
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 53711 — NAVAL SEA SYSTEMS COMMAND (USA)
SPECIFICATIONS
materialIRON
groove_depth0.062 INCHES NOMINAL IN
groove_width0.242 INCHES NOMINAL IN
furnished_itemsBOLT
features_providedO RING
bolt_hole_quantity4
nominal_thread_size1.250 INCHES IN
screw_thread_series_designatorNPT
material_document_and_classificationQQ-I-666 FED SPEC SINGLE MATERIAL RESPONSE
nominal_pipe_size_for_which_designed1.250 INCHES IN
NSN4730-00-564-3452
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 253-59-016ITEM44 · 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
•
NOMINAL PIPE SIZE FOR WHICH DESIGNED: 1.250 INCHES IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: QQ-I-666 FED SPEC SINGLE MATERIAL RESPONSE
•
GROOVE DEPTH: 0.062 INCHES NOMINAL IN
•
FEATURES PROVIDED: O RING
•
NOMINAL THREAD SIZE: 1.250 INCHES IN
•
BOLT HOLE QUANTITY: 4
•
SCREW THREAD SERIES DESIGNATOR: NPT
•
MATERIAL: IRON
TECHNICAL CHARACTERISTICS
NOMINAL PIPE SIZE FOR WHICH DESIGNED1.250 INCHES IN
MATERIAL DOCUMENT AND CLASSIFICATIONQQ-I-666 FED SPEC SINGLE MATERIAL RESPONSE
GROOVE DEPTH0.062 INCHES NOMINAL IN
FEATURES PROVIDEDO RING
NOMINAL THREAD SIZE1.250 INCHES IN
BOLT HOLE QUANTITY4
SCREW THREAD SERIES DESIGNATORNPT
MATERIALIRON
FURNISHED ITEMSBOLT
GROOVE WIDTH0.242 INCHES NOMINAL IN
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 8
361-5901-554446ITEM44Reference document
Same NSN cross-reference
Reference document — Secondary reference
228-59-017ITEM44Reference document
Same NSN cross-reference
Reference document — Secondary reference
186310AITEM44Reference document
Same NSN cross-reference
Reference document — Secondary reference
212-59-016ITEM44Reference document
Same NSN cross-reference
Reference document — Secondary reference
186310BITEM44Reference document
Same NSN cross-reference
Reference document — Secondary reference
349-3803-839112ALT1ITEM44Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Semi-active item — no replacement plannedNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is 253-59-016ITEM44?
253-59-016ITEM44 is a FLANGE,PIPE.
What parts can replace 253-59-016ITEM44?
There are 8 known substitutes for 253-59-016ITEM44: 361-5901-554446ITEM44, 228-59-017ITEM44, 186310AITEM44 and 5 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 253-59-016ITEM44?
253-59-016ITEM44 is cataloged in the U.S. Government catalog under NSN 4730-00-564-3452. 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.