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DBL 8451-21 — BOLT,FLUID PASSAGE

✓ Government record, cited
— · HOSE FITTING
PRODUCT OVERVIEW

DBL 8451-21: BOLT,FLUID PASSAGE.

The BOLT,FLUID PASSAGE is a the manufacturer industrial component. Key specifications include material: STEEL, body_style: STEPPED, surface_treatment: PASSIVATE, wrenching_feature_style: HEXAGON, first_end_connection_type: THREADED INTERNAL PIPE. This part is cataloged in the U.S.

Government catalog under NSN 4730-01-237-0187, 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
DBL 8451-21
NSN: 4730-01-237-0187
FSC: 4730 — Hose, Pipe, Tube, Lubrication, and Railing Fittings
CAGE: D8046 — DAIMLER AG (DEU)
SPECIFICATIONS
materialSTEEL
body_styleSTEPPED
surface_treatmentPASSIVATE
wrenching_feature_styleHEXAGON
first_end_connection_typeTHREADED INTERNAL PIPE
NSN4730-01-237-0187
COMPONENT DIAGRAM
HOSE FITTING — THREAD TYPE IS CRITICAL END A: — STRAIGHT END B: — SPECIFICATIONS Thread: — Material: — Pressure: — PN: DBL 8451-21 · 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
•
BODY STYLE: STEPPED
•
WRENCHING FEATURE STYLE: HEXAGON
•
FIRST END CONNECTION TYPE: THREADED INTERNAL PIPE
•
SURFACE TREATMENT: PASSIVATE
•
MATERIAL: STEEL
TECHNICAL CHARACTERISTICS
BODY STYLESTEPPED
WRENCHING FEATURE STYLEHEXAGON
FIRST END CONNECTION TYPETHREADED INTERNAL PIPE
SURFACE TREATMENTPASSIVATE
MATERIALSTEEL
SUBSTITUTES & CROSS-REFERENCES

No substitute or cross-reference records for this part.

LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Normally procured from the manufacturer (OEM)No demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is DBL 8451-21?
DBL 8451-21 is a BOLT,FLUID PASSAGE.
What is the NSN for DBL 8451-21?
DBL 8451-21 is cataloged in the U.S. Government catalog under NSN 4730-01-237-0187. 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.