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2GL551 ✓ Verified by PartsTable
— · HOSE FITTING
WHAT YOU NEED TO KNOW
PTFE tape on tapered threads (NPT/BSPT) JIC/AN flare connections seal metal-to-metal — no tape
NPT != BSPT — look identical, NOT interchangeable
PRODUCT OVERVIEW

The FITTING,LUBRICATION is a the manufacturer industrial component. Key specifications include material: STEEL BODY, special_features: END ITEM 2320-01-318-9902 HET (HEAVY EQUIPMENT TRANSPORTER); GREASE FITTING. This product is currently in active production with full OEM support.

This part is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-356-6820, 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
2GL551
NSN: 4730-01-356-6820
FSC: 4730
CAGE: 45152 — OSHKOSH CORP (USA)
SPECIFICATIONS
materialSTEEL BODY
special_featuresEND ITEM 2320-01-318-9902 HET (HEAVY EQUIPMENT TRANSPORTER); GREASE FITTING
NSN4730-01-356-6820
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: 2GL551 · 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 BODY
TECHNICAL CHARACTERISTICS (FLIS)
MATERIALSTEEL BODY
SPECIAL FEATURESEND ITEM 2320-01-318-9902 HET (HEAVY EQUIPMENT TRANSPORTER); GREASE FITTING
VERIFIED SUBSTITUTES & CROSS-REFERENCES 11
3289Interchangeable
interchangeable cross-reference
interchangeable
954309Interchangeable
interchangeable cross-reference
interchangeable
8643Interchangeable
interchangeable cross-reference
interchangeable
45609Interchangeable
interchangeable cross-reference
interchangeable
17090Interchangeable
interchangeable cross-reference
interchangeable
02-16-011Interchangeable
interchangeable cross-reference
interchangeable
LIFECYCLE
StatusACTIVE
AvailabilityOEM and secondary market
RoHS CompliantEAR99Not HAZMAT
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FREQUENTLY ASKED QUESTIONS
What is 2GL551?
2GL551 is a FITTING,LUBRICATION.
What parts can replace 2GL551?
There are 11 known substitutes for 2GL551: 3289, 954309, 8643 and 8 more. Substitute compatibility should be verified for your specific system.
What is the NSN for 2GL551?
2GL551 is cataloged in the Federal Logistics Information System (FLIS) under NSN 4730-01-356-6820. This indicates validated use in U.S. government and defense supply chains.
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✓ Validated with multiple authoritative sources, including Government, OEM, and Certified sources.
PartsTable Design LLC · partstable.com
Last verified: July 2026