PartsTable
Technical Data Sheet
Download PDF

1644172 — ELBOW,TUBE TO BOSS

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

1644172: ELBOW,TUBE TO BOSS.

The ELBOW,TUBE TO BOSS is a the manufacturer industrial component. Key specifications include material: STEEL OVERALL, special_features: END ITEM IS AN ENGINEERING MISSION MODULE (EMM) USED FOR THE PALLETIZED LOADING SYSTEM (PLS)., end_item_identification: 3990-01-443-8024; DUMP BODY,DEMOU,XM6, part_name_assigned_by_controlling_agency: ADAPTER 9/16 ORBM X 11/16 ORSM 90 DEGREES. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-538-3791, 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
1644172
NSN: 4730-01-538-3791
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: 5X050 — CRYSTEEL MANUFACTURING, INC DBA CRYSTEEL MANUFACTURING INC (USA)
SPECIFICATIONS
materialSTEEL OVERALL
special_featuresEND ITEM IS AN ENGINEERING MISSION MODULE (EMM) USED FOR THE PALLETIZED LOADING SYSTEM (PLS).
end_item_identification3990-01-443-8024; DUMP BODY,DEMOU,XM6
part_name_assigned_by_controlling_agencyADAPTER 9/16 ORBM X 11/16 ORSM 90 DEGREES
NSN4730-01-538-3791
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 1644172 · 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
•
MATERIAL: STEEL OVERALL
TECHNICAL CHARACTERISTICS
SPECIAL FEATURESEND ITEM IS AN ENGINEERING MISSION MODULE (EMM) USED FOR THE PALLETIZED LOADING SYSTEM (PLS).
PART NAME ASSIGNED BY CONTROLLING AGENCYADAPTER 9/16 ORBM X 11/16 ORSM 90 DEGREES
END ITEM IDENTIFICATION3990-01-443-8024; DUMP BODY,DEMOU,XM6
MATERIALSTEEL OVERALL
SUBSTITUTES & CROSS-REFERENCES 2
FGFF6801-6Same NSN cross-reference
Same NSN cross-reference
Also cataloged under this NSN
405920Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Shelf-life managedAcquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
Ready to buy 1644172?
Compare prices from verified sellers on eBay
Buy on eBay →
As an eBay Partner, PartsTable may earn a commission. Your price is not affected.
FREQUENTLY ASKED QUESTIONS
What is 1644172?
1644172 is a ELBOW,TUBE TO BOSS.
What parts can replace 1644172?
There are 2 known substitutes for 1644172: FGFF6801-6, 405920. Substitute compatibility should be verified for your specific system.
What is the NSN for 1644172?
1644172 is cataloged in the U.S. Government catalog under NSN 4730-01-538-3791. This indicates validated use in U.S. government and defense supply chains.
Community Feedback
Leave a Comment
Comments are reviewed before appearing. You will receive an email to verify before your comment appears.

Request a Quote — 1644172

✓ 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.